Ettingshausen effect due to Majorana modes

Abstract

The presence of Majorana zero-energy modes at vortex cores in a topological superconductor implies that each vortex carries an extra entropy $s_0$, given by $(k_B/2)\ln 2$, that is independent of temperature. By utilizing this special property of Majorana modes, the edges of a topological superconductor can be cooled (or heated) by the motion of the vortices across the edges. As vortices flow in the transverse direction with respect to an external imposed supercurrent, due to the Lorentz force, a thermoelectric effect analogous to the Ettingshausen effect is expected to occur between opposing edges. We propose an experiment to observe this thermoelectric effect, which could directly probe the intrinsic entropy of Majorana zero-energy modes.

16 pages, 3 figures

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Cited by in corpus (12)

• Detecting the universal fractional entropy of Majorana zero modes
• Majorana tunneling entropy
• Surface state reconstruction in ion-damaged SmB_6
• Thermopower and the Mott formula for a Majorana edge state
• Absence of supercurrent sign reversal in a topological junction with a quantum dot
• Quantum thermal transport in the charged Sachdev-Ye-Kitaev model: Thermoelectric Coulomb blockade
• Measuring topological entanglement entropy using Maxwell relations
• Signatures of the topological spin of Josephson vortices in topological superconductors
• Direct Entropy Measurement in a Mesoscopic Quantum System
• Detector-tuned overlap catastrophe in quantum dots
• Heat conductance oscillations in two weakly connected charge Kondo circuits
• Back-action effects in charge detection