Out-of-equilibrium voltage and thermal bias response of a quantum dot hybrid system coupled to topological superconductor

被引：2

作者：

Trocha, Piotr ^{[1
,2
]}

Jonckheere, Thibaut ^{[2
]}

Rech, Jerome ^{[2
]}

Martin, Thierry ^{[2
]}

机构：

[1] Adam Mickiewicz Univ, Inst Spintron & Quantum Informat, Fac Phys, PL-61614 Poznan, Poland

[2] Aix Marseille Univ, Univ Toulon, CNRS, CPT, Marseille, France

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2024年 / 596卷

关键词：

Quantum dot; Majorana fermions; Topological superconductor; Nonequilibrium transport; Thermocurrent;

D O I：

10.1016/j.jmmm.2024.171922

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We investigate theoretically the out-of-equilibrium transport properties of a single-level quantum dot coupled to a normal metal electrode and attached to a topological superconductor. Both voltage and thermal bias responses of the system in the nonequilibrium regime are studied. To obtain transport characteristics we used the nonequilibrium Green's function approach. Particularly, we calculated the current and the corresponding differential conductance in two distinct cases. In the former situation, the charge current is induced by applying a bias voltage, whereas in the latter case it is generated by setting a temperature difference between the leads with no bias voltage. Moreover, strong diode effect in thermally generated current is found and non-equilibrium thermopower is analyzed.

引用

页数：7