Enhancement of the thermoelectric effect due to the Majorana zero modes coupled to one quantum-dot system

TL;DR

This paper investigates how coupling Majorana zero modes to a quantum dot influences thermoelectric effects, revealing that two modes can significantly enhance efficiency and aid in detecting Majorana states.

Contribution

It demonstrates that coupling two Majorana zero modes to a quantum dot can substantially improve thermoelectric efficiency, offering a new detection method for Majorana bound states.

Findings

Coupling one Majorana mode alters thermoelectric behavior.

Two Majorana modes significantly boost thermoelectric efficiency.

Potential application in Majorana state detection.

Abstract

By considering Majorana zero modes to laterally couple to the quantum dot, we evaluate the thermoelectric effect in one single-dot system. The calculation results show that if one Majorana zero mode couples to the dot, the thermoelectric effect will exhibit its change, but the thermoelectric efficiency cannot be enhanced apparently. However, the thermoelectric effect can be efficiently strengthened when two Majorana zero modes are introduced simultaneously. We believe that the findings in this work provide an alternative method for the detection of Majorana bound state.