Violation of the Wiedemann-Franz law in the topological Kondo model

Article

关键词: CONFORMAL-FIELD-THEORY;    THERMAL TRANSPORT;    CONDUCTANCE;    HEAT;   

DOI  :  10.1103/PhysRevB.105.L081403

来源: SCIE

【 摘 要 】

We study the thermal transport through a Majorana island connected to multiple external quantum wires. In the presence of a large charging energy, we find that the Wiedemann-Franz law is nontrivially violated at low temperature, contrarily to what happens for the overscreened Kondo effect and for nontopological junctions. For three wires, we find that the Lorenz ratio is rescaled by a universal factor 2/3 and we show that this behavior is due to the presence of localized Majorana modes on the island.

【 授权许可】

Free