Department of Physics

Indian Institute Of Technology Madras , Chennai

Thermoelectric studies in topological system due to superconductivity and spin-density wave

Speaker : Dr. Amit Gupta, Theoretical Condensed Matter Physics, Banaras Hindu University, Varanasi, India

2016-04-03

Abstract :

In this talk, I will discuss the thermoelectric transports in two dimensional topological system which has coexistence of superconductivity(SC) and spin-density wave(SDW) order paramaters. The SC is presumed to be of dx2−y2 + (px + ipy ) type whereas the SDW order parameter is of BCS symmetry. The Hamiltonian describing such a coexistence phase will be shown to have topological phase in addition to the conventional one. The transport properties in such topological system have two distinct contributions: (i) the surface/edge and (ii) the bulk. The competition between the surface/edge versus the bulk transport is analyzed in different parameter regimes and the possibility of enhancing the figure of merit will be discussed.

Key Speaker Dr. Amit Gupta, Theoretical Condensed Matter Physics, Banaras Hindu University, Varanasi, India
Guests None
Place Conference Room
Start Time 10:00 AM
Finish Time 11:00 AM
External Link None