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LASSP -  Laboratory of Atomic and Solid State Physics

Cornell Laboratory for Atomic and Solid State Physics

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David Awschalom to give Cornell's 2014 Hans Bethe Lecture Series

David Awschalom will present three lectures on spintronics as the 2014 Hans Bethe lecturer. In 1982 Awschalom received his Ph.D from Cornell in experimental physics and he is currently the Liew Family Professor in Molecular Engineering at the University of Chicago. As one of the world leaders in spintronics, Awschalom will be presenting research and engineering applications of this emerging field at a series of talks the week of April 7. More on Awschalom's background can be found in the Chronicle.

UPDATE (4/14/2014): Wondering what spintronics are? Check out this article by George Lowery in the Chronicle.

Schedule for Hans Bethe Lecture series:

Monday, April 7 – Department of Physics Colloquium
4:00pm – Schwartz Auditorium, Rockefeller Hall
“Beyond Electronics: Abandoning Perfection for Quantum Technologies”

Tuesday, April 8 – LASSP Seminar
4:00pm – 700 Clark Hall
“Ultrafast Quantum Control of Single Electron Orbital and Spin Dynamics in Diamond”

Wednesday, April 9 – Public Lecture
7:30pm – Schwartz Auditorium, Rockefeller Hall
“Engaging Diamonds in the Quantum Age”

David Awschalom to give 2014 Bethe Lecture Series

Itai Cohen and Jane Wang's work on fruit fly flight featured in New York Times

Itai Cohen & Jane Wang investigate how flies recover to flight disturbances, concluding that a small group of fly neurons is actually “solving calculus problems.” Click here for the full New York Times article and related video.

Fruit fly flight

Sievers and Ralph recognized as APS Outstanding Referees

Outstanding RefereesProfessors Dan Ralph and Albert Sievers were recognized by the American Physical Society as 2014 Outstanding Referees. They were among 143 Outstanding Referees selected from the 60,000 current referres of the APS journals.

More about this honor is at the APS website.

Sievers and Ralph honored as APS Outstanding Referees

Eun-Ah Kim Promoted to Associate Pprofessor

Congratulations to Eun-Ah Kim who was promoted to Associate Professor on February 1.

Eun-Ah Tenure

Séamus Davis's new theory may revolutionize superconductors

Prof. Seamus Davis along with Prof. Dung-Hai Lee of UC Berkeley have proposed a new theory unifying the odd behaviors of superconductors.

Find out more in the Chronicle.

Read the full paper in Proceedings of the National Academy of Sciences

"Nanostripes" of alternating electrons and holes

Mueller and Reichl show quantum tsunamis are actually smoke rings

By shining light on a gas cooled to temperatures near absolute zero, physicists can create waves that propagate through the gas while maintaining their shape - the quantum version of a tsunami traveling through the ocean. By studying the motion of these "solitary waves" or "solitons" one learns about the underlying interactions between the atoms in the gas. In particular, one can test theories about the quantum mechanics of many interacting particles, with applications ranging from understanding the properties of neutron stars to the behavior of electronic devices. In work reported in Nature [Yefsah et al. Nature 499, 426 (2013)], experimentalists at MIT found solitons that moved many times slower than any known model, suggesting holes in our understanding of nature. Following up on a suggestion of Aurel Bulgac and collaborators [Bulgac et al. arXiv:1306.4266, to appear in Physical Review Letters], Prof Erich Mueller and Matthew Reichl, [arXiv:1309.7012, to appear in Physical Review A] explain the observations by showing that the solitons rapidly break up into structures reminiscent of smoke rings. The slow motion of these "vortex rings" is completely consistent with the experiments, which lack the resolution to distinguish between a tsunami and a smoke ring. This theoretical work will inspire further refinements in the experiments that will definitively identify the waves produced.