December 10, 2016 at 10:24 am

Ulloa, Avalos Author Article on Thermoelectric Transport through Majorana Bound States

Oscar Avalos

Oscar Avalos

Dr. Sergio Ulloa, Professor of Physics & Astronomy at Ohio University, and graduate student Oscar Avalos co-authored an article in Physical Review B titled “Thermoelectric transport through Majorana bound states and violation of Wiedemann-Franz law.”

Their co-authors, J.P. Ramos-Andrade and P.A. Orellana,  are from the Universidad Técnica Federico Santa María in Chile.

Abstract: We study features of thermoelectric transport through a one-dimensional topological system model hosting Majorana bound states (MBSs) at its ends. We describe the behavior of the Seebeck coefficient and the ZT figure of merit for two configurations between the MBS and normal current leads. We find an important violation of the Wiedemann-Franz law in one of these geometries, leading to sizable values of the thermoelectric efficiency over a narrow window in chemical potential away from neutrality. These findings could lead to interesting thermoelectric-based MBS detection devices, via measurements of the Seebeck coefficient and figure of merit.

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