Date/Time
Date(s) - 31/01/2005
3:00 pm - 4:00 pm

Title: On fluctuation diamagnetism and pseudogap of high temperature superconductors

Speaker: Dr. Vadim Oganesyan

Institute:

Location: ABB 165

Description:

High temperature superconductivity in the cuprates is a major puzzle in the theory of condensed matter. One of the key questions concerns the nature of the so-called pseudogap region in their phase diagrams. In this talk I will review the issues here and focus on incipient superconductivity as an explanation for the pseudogap. I will describe work on detecting such superconductivity via diamagnetism, motivated by recent measurements in the cuprates by the Ong group at Princeton. I will show an analysis of the diamagnetic response near the celebrated Kosterlitz-Thouless transition provides a coherent explanation of data on the highly two dimensional cuprate BSSCO2212.