Thermal transport across a Josephson junction in a dissipative environment

被引：2

作者：

Yamamoto, Tsuyoshi ^{[1
]}

Glazman, Leonid I. ^{[2
,3
]}

Houzet, Manuel ^{[4
]}

机构：

[1] Univ Tsukuba, Inst Pure & Appl Sci, Tsukuba, Ibaraki 3058577, Japan

[2] Yale Univ, Dept Phys, New Haven, CT 06520 USA

[3] Yale Univ, Yale Quantum Inst, New Haven, CT 06520 USA

[4] Univ Grenoble Alpes, CEA, Grenoble INP, IRIG,PHELIQS, F-38000 Grenoble, France

来源：

PHYSICAL REVIEW B | 2024年 / 110卷 / 06期

基金：

美国国家科学基金会;

关键词：

HEAT-CONDUCTION; QUANTUM;

D O I：

10.1103/PhysRevB.110.L060512

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

At zero temperature, a Josephson junction coupled to an ohmic environment displays a quantum phase transition between superconducting and insulating phases, depending on whether the resistance of the environment is below or above the resistance quantum. This so-called Schmid transition, representative of the effect in a broad class of quantum impurity problems, turns into a crossover at finite temperatures. We determine the conditions under which the temperature dependence of the thermal conductance, which characterizes heat flow from a hot to cold resistor across the Josephson junction, displays a universal scaling characteristic of the Schmid transition. We also discuss conditions for heat rectification to happen in the circuit. Our work can serve as a guide for identifying signatures of the Schmid transition in heat transport experiments.

引用

页数：5