Mesoscopic effects in the heat conductance of superconducting-normal-superconducting and normal-superconducting junctions
Artikel i vetenskaplig tidskrift, 2019

We study the heat conductance of hybrid superconducting junctions. Our analysis involves single-channel junctions with arbitrary transmission as well as diffusive connectors and shows the influence of the superconducting gaps and phases of the contacts on the heat conductance. If the junction is diffusive, these effects are completely quenched on average, however, we find that their influence persists in weak-localization corrections and conductance fluctuations. While these statistical properties strongly deviate from the well-known analogs for the charge conductance, we demonstrate that the heat conductance fluctuations maintain a close to universal behavior. We find a generalized Wiedemann-Franz law for Josephson junctions with equal gaps and vanishing phase difference.

hot electron bolometer

electrons

tunnel junctions

Författare

Fatemeh Hajiloo

Chalmers, Mikroteknologi och nanovetenskap (MC2), Tillämpad kvantfysik

Fabian Hassler

RWTH Aachen University

Janine Splettstoesser

Chalmers, Mikroteknologi och nanovetenskap (MC2), Tillämpad kvantfysik

PHYSICAL REVIEW B

2469-9950 (ISSN) 2469-9969 (eISSN)

Vol. 99 23 235422

Ämneskategorier

Energiteknik

Keramteknik

Den kondenserade materiens fysik

DOI

10.1103/PhysRevB.99.235422

Mer information

Senast uppdaterat

2019-10-23