Thermoelectric signature of Majorana zero modes in a T-typed double-quantum-dot structure

doi:10.1088/1674-1056/ac92d3

Abstract The thermoelectric effect of the system is theoretically investigated, by coupling Majorana zero mode to the T-typed double-quantum-dot-structure in different ways. It is found that when a single Majorana zero mode is coupled to one of the quantum dots (QDs), the thermoelectric efficiency is suppressed due to the leakage of Majorana zero modes into the QDs. When the Majorana zero mode is coupled to QD2, the suppression of the thermoelectric efficiency is more serious than that of QD1. Furthermore, when two Majorana zero modes are introduced simultaneously, suppression of the thermoelectric effect still takes place. We believe that such results can be candidates for the detection of Majorana bound states and help us understand the role of Majorana zero mode in thermoelectricity.

Keywords: Majorana bound state thermoelectricity quantum dots figure of merit

Received: 17 February 2022
Revised: 10 September 2022
Accepted manuscript online: 19 September 2022

PACS:	73.21.-b	(Electron states and collective excitations in multilayers, quantum wells, mesoscopic, and nanoscale systems)
	74.45.+c	(Proximity effects; Andreev reflection; SN and SNS junctions)
	74.55.+v	(Tunneling phenomena: single particle tunneling and STM)
	72.10.Bg	(General formulation of transport theory)

Fund: Project supported by High-level talents research project of Yingkou Institute of Technology (Grant No. YJRC202027) and the Natural Science Foundation of Liaoning Province of China (Grant No. 2020-BS-287).

Corresponding Authors: Xiao-Qi Wang
E-mail: yklgwxq@163.com

Cite this article:

Cong Wang(王聪) and Xiao-Qi Wang(王晓琦) Thermoelectric signature of Majorana zero modes in a T-typed double-quantum-dot structure 2023 Chin. Phys. B 32 037304

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Thermoelectric signature of Majorana zero modes in a T-typed double-quantum-dot structure

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