Seminars Archive
Many-Body Physics in Cuprate Superconductors
Abstract
Thursday, March 27, 2003, 11:00
Seminar Room, ground floor, Building "T"
Sincrotrone Trieste, Basovizza
Many-Body Physics in Cuprate Superconductors
Zhi-xun Shen
( Department of Physics and Applied Physics, Stanford University,
Stanford, CA 94305)
Abstract
Complex many-body process in solids is a major theme of modern physics.
Truly deep insights of the process often have to come from sophisticated
measurement techniques. Among such techniques, only angle-resolved
photoemission spectroscopy reveals the direction, the speed, and the scattering
mechanism of valence electrons. In the past decade, enormously improved
resolution and experimental collaborations have elevated this technique
from a band mapping tool to an important many-body spectroscopy.
This talk showcases the important many-body processes in cuprate superconductors
revealed by this technique: the dynamics of a single-hole in anti-ferromagnetic
background, the evolution of the Mott gap, the anisotropic superconducting
gap and the pseudogap, and the electron-lattice interaction. These
findings have strongly influenced our thinking about these novel oxides.
