Departamento de Física e Química, Unesp - Univ Estadual Paulista, 15385-000, Ilha Solteira, SP, Brazil.
Science Institute, University of Iceland, Dunhagi-3, IS-107, Reykjavik, Iceland.
Sci Rep. 2018 Feb 12;8(1):2790. doi: 10.1038/s41598-018-21180-9.
We investigate theoretically thermal and electrical conductances for the system consisting of a quantum dot (QD) connected both to a pair of Majorana fermions residing at the edges of a Kitaev wire and two metallic leads. We demonstrate that both quantities reveal pronounced resonances, whose positions can be controlled by tuning of an asymmetry of the couplings of the QD and a pair of MFs. Similar behavior is revealed for the thermopower, Wiedemann-Franz law and dimensionless thermoelectric figure of merit. The considered geometry can thus be used as a tuner of heat and charge transport assisted by MFs.
我们从理论上研究了由一个量子点（QD）组成的系统的热电导率和电导率，该量子点同时与位于 Kitaev 线边缘的一对马约拉纳费米子和两个金属引线相连。我们证明，这两个量都显示出明显的共振，其位置可以通过调节 QD 和一对 MF 的耦合的非对称性来控制。热电势、维德曼-弗朗兹定律和无量纲热电优值也显示出类似的行为。因此，所考虑的几何形状可以用作通过马约拉纳费米子辅助的热和电荷输运的调谐器。
