报告人: Prof. Ilya Eremin（Theoretische Physik III, Ruhr-Universitaet Bochum, Germany）
报告题目：Competing orders, short-time dynamics and BCS-BEC crossover in iron-based superconductors
The discovery of superconductivity in Fe-based superconductors in 2008 with Tc reaching almost 80K is among the most significant breakthroughs in contemporary condensed matter physics. The experimental data on superconductivity show rich behavior, with potentially different symmetry of a superconducting state for different compositions of the same material. Furthermore, the phase diagram reveal a complex interplay between magnetism and superconductivity typical for other exotic superconductors such as cuprates or heavy fermions. In my talk I will discuss the physics of the phase diagram and argue that all pairing states obtained so far can be understood within the same universal pairing scenario. Furthermore, I will review the recent development of the field related to the use of STM as a phase sensitive probe, time-reversal symmetry broken states, and the short-time dynamics behavior of iron-based superconductors expected in the pump-probe spectroscopy.
Employment and research activities:
From 04/2010 W2 (Associate Professor) at the Department of Physics and Astronomy, Ruhr-Universität Bochum, Germany.
04/2005-03/2010 Junior-Professor (W1) at Max-Planck Institut für Physik komplexer Systeme inDresden & Technische Universität Carolina-Wilhelmina zu Braunschweig.
10/2002-03/2005 Wissenschaftlicher Mitarbeiter (BAT IIa) at Institut für Theoretische Physik of FreeUniversity of Berlin (Research Group Prof. F. von Oppen).
12/2000-09/2002 Alexander von Humboldt Research Fellowship at Institut für Theoretische Physik of the Free University of Berlin.
06/2000-11/2000 Guest scientist at Max-Planck Institut für Physik komplexer.
Physics research and education in general field of quantum many-body theory and its application in condensed matter and related systems. My particular interests are related to the investigation of strongly correlated low dimensional electronic and magnetic systems, unconventional superconductivity, non-equilibrium phenomena, topological field theories in topological insulators and novel states of matter forming at the interfaces