Physics Colloquium, "Probing the Electronic Structure of the High-TC Superconductor Bi2Sr2CuO6+d with Scanning Tunneling Microscopy" by Professor Michael C. Boyer, Assistant Professor, Department of Physics, Clark University

Science / Technology - Colloquium

Monday, December 5, 2011
4:00 PM-5:00 AM

Olin Hall
223

Superconductors exhibit unusual physical behavior characterized by two fundamental properties: 1) zero resistance below a critical temperature known as TC and 2) the Meissner effect where magnetic fields are expelled from the material below TC. Though a microscopic theory exists for conventional superconductors, there is much which is not known regarding the more recently discovered high-temperature superconductors. Using scanning tunneling microscopy, we can probe a superconductors atomic structure and underlying electronic structure with atomic resolution. By understanding microscopic variations in the underlying structure, we gain insight into the workings of high-temperature superconductors, which are expected to be important in future technology.
In my presentation, I will begin with an introduction to scanning tunneling microscopy and the types of measurements we can make using this technique. After introducing some of the salient features and concepts pertaining to conventional superconductivity, I will highlight some of the crucial differences observed in high-temperature superconductors. In the final part of the talk, I will present our recent studies which examine the temperature evolution of the electronic structure of the high-temperature superconductor Bi2Sr2CuO6+d through TC, along with the understanding we gain from these studies.

Refreshments will be served at 3:30 P.M. in Olin Hall 118

Cost: free

Suggested Audiences: College

E-mail: physics@wpi.edu

Last Modified: November 22, 2011 at 11:13 AM

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