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Published August 7, 2013 | Published + Submitted
Journal Article Open

Thermopower and Mott formula for a Majorana edge state

Abstract

We study the thermoelectric effect between a conducting lead and a Majorana edge state. In the tunneling limit, we first use the Landauer-Büttiker formalism to derive the Mott formula relating the thermopower and the differential conductance between a conducting lead and a superconductor. When the tunneling takes place between a conducting lead and a Majorana edge state, we show that a nonvanishing thermopower can exist. Combining measurements of the differential conductance and the voltage induced by the temperature difference between the conducting lead and the edge state, the Mott formula provides a unique way to infer the temperature of the Majorana edge state.

Additional Information

© 2013 American Physical Society. Received 6 June 2013; revised manuscript received 12 July 2013; published 7 August 2013. The authors would like to thank A. R. Akhmerov and D. Pekker for helpful discussions. C.Y.H. and K.S. were supported in part by the DARPA-QuEST program. K.S. was supported in part by NSF Award No. DMR-0748925. G.R. is grateful for support from the Packard Foundation and the IQIM, an NSF center supported in part by the Moore Foundation.

Attached Files

Published - PhysRevB.88.075304.pdf

Submitted - 1305.5292v3.pdf

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August 19, 2023
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