Winter 2002 Issue 1

Inside...

Newsletter

New Faculty Profile............................................6

Physics Force at Northrop...................................2

Awards & Announcements...................................3

Research Spotlight............................................4

Physics Open House............................................7

TIGER Balloon...................................................7

Physics Force Schedule.......................................8

Yong Zhang Qian

Dear Physics Alumni and Friends:

This newsletter will be the first of many that will informthose interested in the physics educational and researchprograms of the School of Physics and Astronomy (SPA).Since this is our first newsletter in more than a decade,the first task is to play “catch-up” so as to bring readersup to date on several aspects of the state of physics atUniversity of Minnesota.

You might first ask, what has changed that now per-mits us to afford a newsletter, and the answer is that forthe first time since the period of retrenchments in theearly 1990’s, which stripped us of infrastructure support,we have had resources made available to us that permit ahigher level of communication with our stakeholders.This newsletter is only the beginning. You should seefurther changes on our website (www.physics.umn.edu)in the coming weeks. The School is a very exciting placein terms of its high-level activities in research, teachingand service and we will be able to do a better job of com-municating this to you in the future.

For those of you who knew us some time ago, we arevery different than we were. First, as a personal matter,when I came here many years ago, as the youngest facul-ty member in the department, I had no way to envisionthe circumstance that thirty odd years and forty twoPh.D. advisees later, I would be in my sixth year as de-partment head, and that almost all of my colleagues fromthe time would be retired! The School has come througha period in which large numbers of faculty have retired,and we are going through the process of replacing them,which amounts to a major renewal.

The retirements have been fast and furious. Therehave been 12 just during my tenure as Head, and Profe-sors Hosotani and McLerran left for greener pastures.The replacement process has been ongoing, and its rate

A Letter from the Department Head

is actually limited by the supply of start-up funds. Wehave added nine new faculty. The two most recent ad-ditions, Kamenev and Gherghetta are pictured above-and there is a profile of another of our new faculty, Yong-Zhong Qian on page six of this newsletter. This yearwe are searching for two additional faculty members,and we should be able to add at least six over the nextthree years without additional retirements.

The significant research areas in the department arenow particle theory and experiment, condensed mattertheory and experiment, nuclear theory, space physicsand observational and theoretical astrophysics. A newarea is biological physics, in which we have three facul-ty and are searching for a fourth. In this newsletter,the Research Spotlight focuses on spintronics and

Continued on page 5

Tony Gherghetta Alex Kamenev

Spintronics and magnetic heterostructures

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Demonstrations of GravityPhysics Force at Northrop“This is real physics. Isn’t it great?” Hank Ryan says,stretching a high-powered slingshot to its limit beforefiring an egg at his colleagues, Jon Barber, a retired highschool physics teacher, and Jack Netland, a physicsteacher at Maple Grove Senior High. The point of thedemonstration is to explain that collisions which takeplace relatively slowly experience less force than thosethat happen quickly. It’s obvious that Ryan, a physicsteacher at Mounds View High School, is enjoying play-ing with the toy. The feeling is contagious, and it’s asafe bet that there’s not a kid in the packed house atNorthrop auditorium who wouldn’t love to have a tryat that slingshot.

Many of the demonstrations combine slapstick com-edy with physics. One routine, which always gets a bigaudience reaction, has School of Physics & AstronomyProfessor, Dan Dahlberg, pretending to crash a fire ex-tinguisher-powered rocket car. He returns to the stagecarrying a bent wheel and brings down the house. De-

Dan Dahlberg explains rocketpropulsion and gets laughsbefore an audience 3,000elementary school children.

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spite the vaudevilliannature of the act, there isa serious mission behindit. The Physics Force isan outreach programthat was started in 1985by the late Phil Johnsonwho was in charge of lec-ture demonstrations atthe School of Physics &Astronomy (SPA). Thegroup is made up of highschool teachers and SPAfaculty. In its 17 yearhistory, the group hasperformed for many

thousands of school children and has appeared at EpcotCenter, on Newton’s Apple and German television.

During one week in January 2002, the Physics Forceplayed to about 10,000 K-12 students at three matineeperformances. Before and after each show, Dahlbergworked the crowd, talking to teachers and students. Hegot high fives from kids as he stopped to ask about theirschool science projects.

The group also performed a public show in theevening at Northrop. Publicity from a local televisionnews program helped bring in another 2,500 people tothe show. The public performance was a testament tothe Physics Force’s appeal to varying age groups andbackgrounds. Ten-year-old Shelby Jones of St. Antho-ny Park Middle School, attended with her father. Theyboth enjoyed the show and Shelby was particularly im-pressed with the gravity demonstration in which HankRyan was dropped from a platform 20 feet in the air.“I’m way more interested in physics now,” Shelby said.

There is a second group of Physics Force called theNext Generation that includes SPA faculty members JimKakalios and Cindy Cattel. This group also travels toelementary and secondary schools around the state per-forming their own version of the act.

A schedule for Physics Force upcoming performancescan be found on the back page of this newsletter.

John Barber pounds a nail into a log while Jack Netlandexplains that he can’t feel the force of the nail because amass at rest (the log) will tend to stay at rest.

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The Physics Force has a web page:

www.physics.umn.edu/pforce

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2002 Abigail and John Van Vleck Lecture

Awards & Announcementscame a Professor in the Physics and the Applied PhysicsDepartment of Columbia University. Stormer has workedextensively on the properties of lower-dimensional elec-tron systems.

Outstanding Achievement AwardHeinrich Jaeger of the University of Chicago will bepresented with the University of Minnesota Outstand-ing Achievement Award. The award will be presentedat a reception in Professor Jaeger’s honor on Wednes-day, February 20th at 3:00 p.m. in 101 Walter Library.Immediately following the award ceremony, ProfessorJaeger will present the Erickson Lecture at 4:00 p.m. inRoom 131, Physics.

This award is presented to Professor Jaeger in recog-nition of his scientific accomplishments in three researchareas of condensed matter science, the study of granularmedia, vortex dynamics in superconductors, and mesos-copic physics. Professor Jaeger received his Ph.D. (1987)and M.S. (1982) degrees in Physics from the Universityof Minnesota.

Honorary DegreesDrs. William A. Bardeen (Ph.D. 1968) and Jeffrey A.Harvey (B. S. 1977) have been selected to receive theUniversity of Minnesota’s highest honor at the Instituteof Technology Commencement on May 10ths, 2002.

William A. Bardeen, senior staff member at FermiNational Laboratory, is recognized for his “seminal con-tributions to many parts of the Standard Model of theStructure of Matter; for his leadership role in furtheringadvancement of physics as head of the theory group atFermi National Accelerator Laboratory and for the im-portant part he has played and continues to play in fos-tering international cooperation in scientific research.”the award to Dr. Bardeen is somewhat unusal in the hisfather, the late Professor John Bardeen was also award-ed an honorary degree.

Jeffrey A. Harvey, Louis Brock Professor of Physicsat the Enrico Fermi Institute of the University of Chica-go, recognized for “his pioneering research in ‘Beyondthe Standard Model’ physics, a program that seeks unifi-cation of particle physics with gravity; co-originator ofHeterotic String theory and major contributor to the roleof solitons in string theory and intellectual leader in or-bifold compactification, black-hole physics and ‘brane’physics.”

More Awards...

Horst L. Stormer will deliver this year’s Van Vleck Lec-ture. Stormer is a Professor of Physics & Applied Phys-ics at Columbia University and Adjunct Physics Direc-tor at Bell Laboratories. He was a co-winner with DanTsui and Robert Laughlin of the 1998 Nobel Prize inPhysics for “discovery of a new form of quantum fluidwith fractionally charged excitations.” The title of hispublic lecture is “Fractional Charges and other Talesfrom Flatland” and will be held at 4:00 p.m., Thursday,April 4th, 2002 in the Van Vleck Lecture Hall, Room150 Physics. There will be a reception following thelecture in Room 216 Physics.

A computer-generated cartoon of the correlated electronstate in the conditions of the fractional quantum Hall effect.The electrons, pictured here as orange spheres, are livingin Flatland—a two-dimensional layer near the interface ofa semiconductor heterostructure. The motion of theelectrons is like a group dance, with strongly correlatedpositions of the participants. Flatland is the topic ofProfessor Stormer’s upcoming Van Vleck Lecture.

Stormer received his Ph.D. in 1977 from the Univer-sity of Stuttgart and joined Bell Labs as a postdoc short-ly after. From 1983 to 1992 he headed the Semiconduc-tor Physics Research Department and became the Di-rector of the Physical Research Department of AT&TBell Labs in 1992. In 1997 Stormer moved to the posi-tion of Adjunct Physics Director at Bell Labs and be- Continued on page 8

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Research SpotlightSpintronics/Magnetic Heterostructures

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Physicists at the University of Minnesota have teamedup with colleagues in Electrical Engineering and Chem-ical Engineering and Materials Science to tackle a fifty-year-old problem in physics. The mystery is a well-known phenomenon called exchange bias, which occurswhen a thin film of ferromagnetic material is placed nextto a layer of antiferromagnetic material, which tends tocreate a favored direction for the ferromagnetic layer’smagnetization. This pinning of the magnetization hasbeen used since the mid 1990’s in creating computerhard drive read heads, which are made from “club sand-wiches” of different types of magnetic and nonmagnet-ic materials. Although an entire industry has been builtaround the phenomenon, no one really knows in detailwhat causes it.

Paul Crowell, Professor of Physics, said that the in-dustry which mass-produces these sandwiches for usein hard drives does so on the basis of a lot of educatedguesswork. If the physics of the phenomenon were bet-ter understood, it would certainly be possible to improvethe density of the magnetic information on a hard diskand increase hard drive capacity.

One of the barriers towards compiling data and even-tually a better theory of exchange bias has been that mostof the interfaces between the layers of the sandwichesused by industry are rough. This increases the exchangebias, but the complex geometry makes it difficult to un-derstand the phenomenon. That’s where Allen Gold-man’s superconductor group comes into play. For yearsGoldman’s group has created very smooth films for theirwork in superconductivity. Through a process calledmolecular beam epitaxy, Goldman’s group is able to cre-ate a much simpler interface geometry using magneticoxides that makes it easier to study the physical causesof exchange bias.

Dan Dahlberg and his research group then use aproperty known as anisotropic magnetoresistance toanalyze the exchange bias evident in these smooth in-terface samples. According to Dahlberg, “part of theproblem has been that [scientists] have been measuringthe wrong thing for forty years.” The traditional ap-proach to analyzing pinning was to flip the spin of theelectrons in the ferromagnet and then see how muchenergy it takes to cause the pinning. The problem withthat approach occurred to Dahlberg while working on adifferent topic, the problem of giant magneto-resistance.“The surprise was that the pinning energies we calcu-lated were off by a factor of ten from traditional mea-sures.” The reason for the discrepancy was that thetraditional approach was measuring the weakest linkinstead of the average energy required to cause the pin-ning. Dahlberg explained further that it is analogous todominoes. If you knock one domino over and they areall the exact same size they all require the same amountof energy to be pushed past the angle where they canrecover. But if one domino has a slightly narrower baseit will require less energy to push it over, because it willtopple at a smaller angle. There are certain domains orgroups of electrons that are analogous to the narrowdomino. They take less energy to pin. For years scien-tists were measuring the domain that was pinned theeasiest and not the average of all the domains.

Dahlberg’s data will be put into a computer modelby Randy Victora, a Professor in the Electrical Engineer-ing and Computer Science Department. Eventually themodel will help predict the most efficient way to con-struct the magnetic heterostructure “sandwiches,” butnot before a final piece of the puzzle is put into place byPaul Crowell’s research group. Crowell’s group is ableto use a process called time-resolved ferromagnetic res-onance to further analyze the sample. This process usestwo infrared laser pulses, that can be spaced in time aslittle as 200 femtoseconds apart. The first pulse createsa magnetic field, while the second pulse probes the sam-ple in order to get a snapshot of what happens. As thespacing between the pulses is varied, a movie of the mag-netic behavior is obtained in which the time betweenmovie frames is on the order of 1/100th of a nanosecond(one nanosecond is a billionth of a second). The datafrom these experiments will also be added to the com-puter model in order to get a complete picture of thecoupling mechanism that causes exchange bias.

Research on the physics of magnetic heterostructureshas begun in Crowell’s group in another important area

At Left: spin in-jection of electronsfrom a ferro-magnetic metalinto a semi-conductor hetero-structure. The elec-trons re-combinewith holes in thequantum well. Thepolarization of theresulting emissionprobes the electronspin state at the endof the injectionprocess.

Figure by Paul Crowell

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called spintronics. Spintronics studies the problemsassociated with structures made up of layers of alter-nating semiconductors and ferromagnets. “If a semi-conductor and a ferromagnet could be coupled success-fully, one could imagine a device that was not just merelyon and off like the traditional semiconductor chip, butwould have two positions of on, ‘spin-up’ on and ‘spin-down on,’ as well as off.”

According to Crowell, the chief barrier to creatingsuch devices is the problem of spin-injection. As it standsnow, one can easily pass a current through a semicon-ductor into a ferromagnet, but not the other way around.All of the resistance to current passing between the twolayers is at the interface. Theoretically, an electron canpass through this barrier through a process known astunneling. Crowell, along with Chris Palmstrøm, a Pro-fessor of Chemical Engineering and Materials Science,are trying to exploit this tunneling process as a means oftransferring spin from the ferromagnet into the semi-conductor. In order to detect the injected spin, the tun-neling electron is forced to combine with a “hole” insidethe semiconductor, emitting a flash of light. This flashcan be analyzed in order to read the spin-state of theinjected particle. According to Crowell, “once we areable to get the spin into the semiconductor, we can ma-nipulate it using a combination of electrical fields andlight. In principle, it would be possible to design logicdevices that would be ingredients in a new generation ofcomputers.”

The research of all of the University of Minnesotaphysicists and engineers mentioned in this article is be-ing supported by a Materials Research Science and En-gineering Centers (MRSEC) grant from the National Sci-ence Foundation.

Pete Eames works an magnetic force microscope whichDahlberg’s research group uses to analyzeheterostructures.

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magnetic heterostructures.

The educational enterprise continues to functionwell. The transition to a new semester calendar wasaccomplished in 2000-2001 without serious mishap. Un-der semesters we now offer a more open undergraduatemajor. This allows, in addition to traditional physicscourses, specialization that can lead to advanced workin engineering, education and biology. Outreach activi-ties have achieved new heights and incredible visibilityat SPA. The Physics Force, which now plays to audi-ences of thousands, is featured in this newsletter.

Not all of the news over the past year has been posi-tive. We were greatly saddened by the death of JackWinckler, of the Space Physics Group. Even in retire-ment, he was continuing his distinguished research,which had earned him election to the National Acade-my of Sciences.

I hope that you find this newsletter useful. It shouldhenceforth appear regularly twice a year. We welcomesuggestions for articles, and for changes that would im-prove its quality.

With our best wishes for 2002,Allen Goldman

A Letter from the Department HeadContinued from page 1

Faculty ChangesRetirements Research Field YearHans Courant High Energy Experiment 96/97Steve Gasiorowicz High Energy Theory 96/97Yau Chien Tang Nuclear Theory 96/97Russell Hobbie Biophysics 97/98Paul Kellogg Space Physics 97/98Roger Jones Physics Education 98/99Erwin Marquit Philosophy of Physics 98/99Benjamin Bayman Nuclear Theory 99/00William Zimmermann Condensed Matter Experiment 99/00Dieter Dehnhard Nuclear Experiment 00/01Clayton Giese Chemical Physics 00/01Roger Stuewer History of Physics 00/01Walter Weyhmann Condensed Matter Experiment 00/01New Faculty Research Field YearPaul Crowell Condensed Matter Experiment 97/98Shaul Hanany Observational Cosmology 98/99Alexander Grosberg Biophysics 99/00Yong-Zhong Qian Nuclear Theory 99/00Jon Urheim High Energy Experiment 99/00Michael Duvernois High Energy Experiment 00/01Michel Janssen History of Physics 00/01Joachim Mueller Biophysics 00/01Alex Kamenev Condensed Matter Theory 01/02Tony Gherghetta High Energy Theory 01/02

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Yong-Zhong QianThere are approximately 100 elements in the universe,but exactly how nature produces all these elements isstill largely a mystery. Yong-Zhong Qian, who joinedthe School of Physics and Astronomy faculty in 1999,studies the origin of the elements in connection withthe evolution of the universe.

The universe was born approximately 15 billion yearsago with two major primordial elements, hydrogen andhelium. During the subsequent evolution, stars wereformed and lit up the universe by burning special fuels.The first fuel is the primordial element hydrogen whichis burned into the heavier element helium. When hy-drogen is exhausted, helium is ignited and burned intothe still heavier elements carbon and oxygen, the essen-tial ingredients of all biological forms. This process ofburning lighter elements into heavier ones constitutesthe basic cycle of a star’s life. At present, the sun shinesby burning hydrogen into helium. Approximately tenbillion years from now, the hydrogen in the sun will beexhausted and helium burning will start. However, theheavier elements are less efficient fuels and are harderto ignite as they are the ashes of the lighter elements. Astar as small as the sun cannot ignite the ashes of heliumburning and gradually dies out after helium is burnedup.

By contrast, a star ten times more massive than thesun comes to the end of its life only when iron, the ashof the ashes, is produced. Such a star then collapses un-der its own weight and dies a glorious death in an explo-sion called a “supernova.” During the explosion, newprocesses occur to produce additional elements heavierthan iron, such as gold. These elements and those pro-duced prior to the explosion are ejected by the superno-va into space, enriching it and the next generation ofstars to be formed with non-primordial elements. Thelargest of the enriched stars become new supernovae indue course and initiate a new cycle. The small ones sur-vive to this day and are the fossil records of the composi-tion of the universe at the time of their birth.

Qian’s research deciphers the origin of the elementsbased on observations of stars that were formed through-out the history of the universe. There has been a rapidaccumulation of data on the distribution of elements instars with the advent of large telescopes such as Hubbleand Keck. Taking advantage of this observationalprogress, Qian has initiated a novel approach studyingthe origin of the elements. Just as the diversity amonghuman beings is the manifestation of a finite number ofgenomes, various distributions of elements in stars ofdifferent ages can be understood in terms of production

templates that are intrin-sic to several distincttypes of supernovae.

Only the elements inthe surface layers of astar can be observed. Ingeneral, the surface com-position of a star also re-flects the composition ofits birth material, whichwas enriched by theproducts from many su-

pernovae. However, there is an unusual case when thesurface of a star is enriched by a single supernova. Thiscan occur in a system where a small star has a big com-panion. The big star would explode as a supernova. Dur-ing the explosion, a fraction of the supernova productswould be directly painted on the surface of the smallerstar. If the explosion did not disrupt the system, thesmall star with the special enrichment on its surfacewould now have a dark companion that is the remnantof the original big star. A search for such systems mayprovide golden opportunities to extract the productiontemplate for an individual supernova. In collaborationwith Gerald Wasserburg at Caltech, Qian has predictedthat a couple of stars with unusual surface composi-tions were enriched exactly in this manner. This pre-diction should have a strong impact on future observa-tional efforts.

Qian was born in the People’s Republic of China,and moved to the United States in 1989. He receivedhis Ph.D. in 1993 from the University of California, SanDiego. He was an Oppenheimer Fellow at Los AlamosNational Laboratory and was recently named a Depart-ment of Energy Outstanding Junior investigator. He ismarried and has two daughters.

Qian is one of the principal organizers of the upcom-ing workshop, “Low Z at low z and high z: Early Chem-ical Evolution” which will take place in Minneapolis,from March 21-23, 2002. The workshop will bring to-gether theorists and observers who are studying Low Zstars (those which are very old and have low metallicityor “Z”) in our galaxy and neighboring galaxies.

Yong-Zhong Qian

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New Faculty Profile:

The Low Z Workshop has a web page:

www.tpi.umn.edu/lowz

Physics Open House

Prospective student, Dat Nguyen checks out thedemonstration table at the Physics Open House.

Every fall, the Physics Open House uses hands on dem-onstrations to inform undecided undergraduates aboutthe possibilities of a physics major. This year more than120 students viewed demonstrations, heard lectures andtook tours of various physics research and teaching lab-oratories. According to the event’s coordinator, Profes-sor Prisca Cushman, the Open House is an opportunity“to demonstrate the broad range of employment optionsavailable to physics graduates, whether they go on tograduate school or not.”

The Society of Physics Students took turns manningan information table and giving tours of various lab fa-cilities. On one tour of the Experimental and ModernMethods Laboratories, Kurt Wick showed a prospectivemajor, Army Nuddin, first how a Geiger counter is usedand then the working lab where students learn to buildtheir own experimental equipment. “It’s a lot more tech-nical than I thought,” Nuddin commented as the tourconcluded. “I didn’t realize you would have to buildyour own equipment.”

While students snacked on pizza, they listened to lec-tures by University of Minnesota Physics Alumni suchas Dr. Stephen J. Willett who explained how he uses hisundergraduate physics degree in his job at EastmanKodak.

The open house gave undergraduates a chance tomeet with School of Physics & Astronomy faculty, grad-uate students and undergraduate physics majors. Al-

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though many of the attendees were undecided on theirmajors, some, like Stephanie Mma, an Aerospace Engi-neering major, were thinking of adding physics as a dou-ble major. Tour leaders like Dave Engebretson used theoccasion to recruit undergraduates to work in researchlaboratories. “It’s an excellent opportunity for every-one. It’s good experience for an undergrad, much betterthan working stock shelves, and it’s always good to havemore people working in the lab.” Engebretson is part ofPaul Crowell’s Spin Dynamics and Magneto Optics Lab-oratory, and gave a demonstration of an infrared laserand the properties of liquid nitrogen used to cool semi-conductors to low temperatures.

TIGER balloon breaks record

Above: Filling the TIGER balloon before launch at McMurdoStation, Antarctica. Inset: TIGER’s trajectory around theSouth Pole.

Photo and Trajectory by Dr. Eric Christian USRA/NASA/GSFC

TIGER, a balloon that collects data to help physicistsdiscover the origins of cosmic rays, has broken a recordfor the longest balloon flight ever. Scientists in theUniversity of Minnesota Space Physics programare part of the team that put together the Trans-IronGalactic element recorder or TIGER, which waslaunched on December 20th, 2001 and was cut down onJanuary 21st after making two trips around the SouthPole. According Physics Professor, Jake Waddington, “Itwill have travelled some 10,000 miles and collected aboutfour million cosmic ray iron nuclei.”

TIGER’s total flight time was 31 days 21.5 hours, anew record for a zero pressure balloon (a balloon that isopen at the bottom and typically loses gas every night).Its flight was aided by the circumpolar winds that blowat this time of year. TIGER landed about 300 miles awayfrom its launch point and is expected to be recoveredthis year.

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116 Church Street S.E.Minneapolis, MN 55455www.physics.umn.edu

NewsletterAllen GoldmanHead, School of Physics & AstronomySend article suggestions and additions/deletions for thenewsletter mailing list to:Jenny CurtisAssoc. EditorSchool of Physics & AstronomyUniversity of Minnesota116 Church Street S.E.Minneapolis, MN 55455jenny@physics.umn.edu

Physics Force ScheduleFebruary 19 (The Next Generation) Chaska, 10 a.m. (K-6th grade); 1:30 p.m. (high school).

February 21 (The Original Force) Boy Scouts, Capitol Hill School, time to be announced.

February 26 (The Original Force) Centennial Middle School, 1:10 p.m.; 7:00 p.m.

March 7 (The Original Force)Chippewa Middle School, 1:40 p.m.

March 12 (The Original Force) Highland Elementary School, 9:30 a.m.

March 14 (The Next Generation) North Star Elementary School, Minneapolis, two

shows, times to be announced (TBA).

March 21 (The Original Force) Cornelia Elementary School, Edina, 7:15 p.m.

April 11 (The Original Force) St. Cloud State University, 1 p.m.

There will also be an evening show, open to the public,time to be announced.

April 19 (The Original Force) Fred moore Middle School in Anoka, time TBA

April 22 (The Original Force) Sunset Hills Elementary School, time TBA.

The University of Minnesota is committed to the policy that all persons shall haveequal access to its programs, facilities, and employment without regard to race, color,creed, religion, national origin, sex, age, marital status, disability, public assistancestatus, veteran status, or sexual orientation.

Professors Arkady Vainshtein and Mikhail Shifmanreceived the 2000 American Physics Society (APS)Sakurai Prize for theoretical particle physics. ProfessorMikhail Voloshin shared the 2001 APS Sakurai Prizewith Nathan Isgur and Mark Wise.

Professor Anatoly Larkin, will receive the 2002 APSLars Onsager Prize for his work in theoretical statisti-cal mechanics.

Professor Leonid Glazman was named to a McKnightPresidential Chair in 2000 and Professor Shaul Hana-ny, was named a McKnight Professor for 2001-2003.

Professor Charles E. Campbell, was presented withthe Institute of Technology’s George W. Taylor Awardfor Distinguished Service last spring.

Awards

Please feel free to drop us a line with suggestions/commentson the newsletter or updates to our mailing list. We’re alsoputting together an alumni section for our webpage. We’d loveto add a link to your site.

alumni@physics.umn.eduwww.physics.umn.edu/outreach/alumni

Physics Alumni

The opinions expressed in this newsletter do not necessarily reflect the official policiesof the Board of Regents or the University administration

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