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Nanotechnology 501 Lecture Series

Electrons in Two Dimensions: Quantum Corrals and Semiconductor Microstructures

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Contributor(s) Eric J. Heller
Harvard University
Abstract Don Eigler particle in a box wave image The images generated by a scanning tunneling microscope are iconic. Some of the most famous are Don Eigler’s quantum corrals, which reveal not only the guest atoms on a surface but especially the interference patterns of electrons shuttling back and forth along the surface. To understand the images, we first discuss the middle name in STM - tunneling. But the real story behind Eigler’s images is a profound confirmation of quantum interference and the wave nature of matter. We will discuss the special surface dwelling electrons and the scattering of them off atoms and defects on the surface, making analogies with sound wave scattering. We will listen to atoms being moved one at a time, and come to understand the new physics they reveal.
Biography Eric HellerProf. Eric Heller came to Purdue as a Phi Beta Kappa Visiting Scholar. He has been a member of the physics faculty at Harvard since 1993 and, during 1993-1998, was director of the Institute for Theoretical Atomic, Molecular and Optical Physics at the Harvard-Smithsonian Center for Astrophysics. Since 1998 he has also been a member of the chemistry faculty. He previously taught at UCLA and the University of Washington, and was a staff scientist at the Los Alamos National Laboratory. A fellow of the American Academy of Arts and Sciences, the AAAS, and the American Physical Society, he is the recipient of the 2005 American Chemical Society Award in Theoretical Chemistry. Professor Heller’s current research involves theoretical investigation of wave behavior, chaos and quantum mechanics, and collision theory. He is also interested in science based art as a way to convey insights about complex subject matter. He was elected a member of the International Academy of Quantum Molecular Science and served as a fellow at Wisschaftskolleg du Berlin this past academic year.
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  • Heller, Eric J. (2007), "Electrons in Two Dimensions: Quantum Corrals and Semiconductor Microstructures," http://www.nanohub.org/resources/3253/.

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Date posted 04 Dec, 2007
Time 02:30 PM, February 12, 2007
Location Birck Nanotechnology Building, Room 2001
Type Online Presentations
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  1. 5.0 out of 5 stars 

    Posted on 04 December, 2007 by Joseph M. Cychosz

    0   0   Login to vote This is an outstanding talk.

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