The Bethe Way Volume II 2017
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The Bethe Way Volume II 2017 In This Issue - Breakthrough Telescope to be built in Chile - $23M NSF Grant Powers New Science, Technology Center - New Electron Microscope Sees More Than an Image The Bethe Way 2017 Vol 2.indd 1 6/1/17 8:59 AM Letter From The Chair Welcome to the second edition of the Cornell Other examples of Alumni Support this year physics department yearly newsletter, The include a scientific equipment donation by Bethe Way. We have had an exciting year of Bill and Michelle Green of Stanford Research faculty hires, research breakthroughs, staff Systems (SRS). Their commitment changes, teaching reform, faculty awards, is enabling us to update many of the and connecting with alumni. experimental set-ups in the graduate and undergraduate Advanced Lab. The lab’s Our new faculty members, Natasha Director, Nick Szabo Jr., and the course Holmes and Brad Ramshaw, have hit the lead, Paul McEuen identified and prioritized ground running since their arrival in January. items from SRS that will directly improve the Natasha’s field is physics education research, educational experience for our students in and she is leading a group of faculty in a the fall of ’17. Also of note was a donation several year project to reform how labs are by the Merrill Foundation whose generous taught in our introductory engineering and gift dedicated room 230 in Rockefeller Hall Eanna Flanagan honors physics sequences. Brad’s field is to Prof. Emeritus John Silcox of Applied and Department Chair low temperature condensed matter physics, Engineering Physics. and he was awarded the 2017 Lee Osheroff Richardson Science prize. We are extremely An event of note this year was Mrs. Rose pleased to have them both on our faculty. Bethe turning 100! This past March Rose Jared Maxson, an accelerator physicist, celebrated with family and friends and has also joined our faculty and will be many of us had the opportunity to briefly arriving in July. visit with Rose, share cake and fond memories of her husband Hans Bethe. Other faculty awards this year include the It was a beautiful celebration. We wish Rose 2017 Fritz London Memorial Prize in Low health and happiness! Temperature Physics which was awarded to Jeevak Parpia. Kurt Gottfried was Lawrence Gibbons, our Director of Graduate awarded the 2016 Scientific Freedom and Studies, successfully led another year of Responsibility Award from the American graduate admissions with a target of 30 Association for the Advancement of Science. students for the fall semester. I am happy to David Mermin was awarded the Dagmar report next year’s class will be 32. Thank you and Vaclav Havel Foundation VIZE 97 Prize to Lawrence, to our Graduate Field Assistant COVER IMAGE for 2017, which is awarded to people who Kacey Acquilano, and to the members of “cross the traditional framework of scientific the Admissions Committee for their time Cover attributed to Prof. Erich Mueller knowledge, contribute to the understanding and efforts in identifying this terrific group of Nematic spin textures in a rotating spin-1 of science as an integral part of general graduate students. Bose gas. Ellipsoids represent local spin culture, and in an unconventional way fluctuations, and color encodes degree of local order. Vorticity is concentrated at the eight deal with the fundamental questions of Beginning the summer of 2017, the dark regions which are “pi-disclinations” in knowledge, being and human existence.” department will also be piloting a new peer the nematic order. [Phys. Rev. A 69, 033606 advising program which will operate in (2004)] I would personally like to thank David parallel with faculty advising and whose goal Kupperman (’92) for reconnecting many is to better attract interested freshmen into CONTENT of our alumni with the department through the physics major and to augment our Many of the articles and images in this issue the newly created Physics Advisory Council. underclass advising. This program was of The Bethe Way originally appeared in the Still in the early stages of organization, this inspired by a very successful peer advising Cornell Chronicle. Council will be critical in facilitating future program operated by the Office of initiatives as well as connecting many of Undergraduate Biology. Undergraduates, our students to leaders in the commercial particularly freshmen and sophomores, are and academic professions. You will find an sometimes hesitant to contact their “Alumni Spotlight” on David in this issue. faculty advisors, but are more willing to 2 VOL II 2017 • THE BETHE WAY • physics.cornell.edu The Bethe Way 2017 Vol 2.indd 2 6/1/17 8:59 AM Two with Cornell ties share 2016 Nobel Prize in physics BY TOM FLEISCHMAN discuss academic questions and have More than 40 years ago, David J. John Reppy, the John L. Wetherill Professor regular contact with fellow undergraduates. Thouless, Ph.D. ’58, and J. Michael Emeritus of Physics, knows both Thouless We now have volunteer physics juniors Kosterlitz, a postdoctoral researcher at and Kosterlitz. He said Thouless was and seniors who will advise 5-6 incoming Cornell 1973-74, successfully challenged identified early on as having great promise. freshmen each. Peer advisors undergo conventional wisdom that superfluidity or “He was a Ph.D. student of Hans Bethe,” training and act as a complementary superconductivity could not occur in infinite Reppy said, referring to the 1967 Nobel resource to faculty advisors. An important two-dimensional systems. Prize winner, best known for his work on the goal of the peer advising program is to They also explained “phase transition” – the Manhattan Project, who taught at Cornell also encourage students from typically mechanism that makes superconductivity from 1935 until his retirement in 1975. “Bethe underrepresented groups to pursue the disappear at higher temperatures. In fact, that thought very highly of Thouless, mainly physics major, as we intend to match mechanism is known as the KT (Kosterlitz- because, when he came to Cornell as a peer advisors with advisees from similar Thouless) transition. novice graduate student, he asked Bethe backgrounds. This effort is being led by our for a thesis topic. Bethe gave him one, and Director of Undergraduate Studies, Kyle Due in part to that pioneering work from the Thouless disappeared. “And after some time, Shen and the Society of Physics Students. early ’70s, scientists are now on the hunt he returned and had completed the thesis for new and exotic phases of matter, with topic and was ready to graduate,” Reppy said. Nancy Searles, our department’s former applications in materials science “(Thouless) was really quite exceptional.” accounts representative retired in April. and electronics. She will be greatly missed and we wish Reppy’s interactions with Kosterlitz most her all the best in her retirement. In her For their revolutionary research, Thouless and often came on the side of a large rock, as place we are pleased to announce the Kosterlitz – along with Princeton University both are avid climbers. They first met in hiring of Laura Kipfer who is joining us physics professor F. Duncan M. Haldane – Birmingham in the early 1970s, when Reppy after previously working with the Cornell have been awarded the 2016 Nobel Prize was on sabbatical in Manchester, England, Law School and the College of Arts and in physics, the Royal Swedish Academy of and went to Birmingham to give a talk. They Sciences Business Service Center. Sciences announced Oct. 4 in Stockholm. later met at Stanage Edge, a well-known The Royal Swedish Academy announced the climbing area in England. “He’s not only a top- Special thanks to Betsy Wiggers for prize of approximately $930,000 is being notch physicist, but a world-class climber,” graciously donating many hours of her time split two ways: Thouless, emeritus physics Reppy said. in the creation, layout and design of The professor at the University of Washington, Bethe Way. This significant contribution Over the past decade, the Swedish will receive half of the prize because of his is greatly appreciated by the Department. Academy noted, the study of topological “crucial contributions” on multiple fronts. phases – not only in thin layers but also Kosterlitz, physics professor at Brown Finally, I would like to extend a personal in three-dimensional materials – has University, and Haldane will split invitation to all of you who may find their advanced front-line research in condensed- the remainder. way back to Ithaca through the year to matter physics. It is seen as pushing please stop in and visit. We are always “This year’s laureates opened the door on an science toward new generations of pleased to meet with former students and unknown world where matter can assume electronics and superconductors, as well friends of the department. strange states,” the Royal Swedish Academy as quantum computing. said in a statement announcing the winners. “Current research is revealing the secrets of Sincerely, “They have used advanced mathematical matter in the exotic worlds discovered by this Eanna Flanagan methods to study unusual phases, or year’s Nobel laureates,” the academy said in states, of matter, such as superconductors, its statement. superfluids or thin magnetic films. Thouless, 82, was born in Bearsden, “The three laureates’ use of topological Scotland, and received his undergraduate concepts in physics was decisive for their degree from the University of Cambridge in discoveries,” the statement said. Topology is 1952. Kosterlitz was born in 1942 in Aberdeen,