TY - JOUR

T1 - Magnetic field influence on the proximity effect in semiconductor-superconductor hybrid structures and their thermal conductance

AU - Tkachov, Grygoriy

AU - Falko, Vladimir

N1 - © 2004 The American Physical Society

PY - 2004/3

Y1 - 2004/3

N2 - We show that a magnetic field can influence the proximity effect in NS junctions via diamagnetic screening current flowing in the superconductor. Using ballistic quasi-one-dimensional (Q1D) electron channels as an example, we show that the supercurrent flow shifts the proximity-induced minigap in the excitation spectrum of a Q1D system from the Fermi level to higher quasiparticle energies. Thermal conductance of a Q1D channel (normalized by that of a normal Q1D ballistic system) is predicted to manifest such a spectral feature as a nonmonotonic behavior at temperatures corresponding to the energy of excitation into the gapful part of the spectrum.

AB - We show that a magnetic field can influence the proximity effect in NS junctions via diamagnetic screening current flowing in the superconductor. Using ballistic quasi-one-dimensional (Q1D) electron channels as an example, we show that the supercurrent flow shifts the proximity-induced minigap in the excitation spectrum of a Q1D system from the Fermi level to higher quasiparticle energies. Thermal conductance of a Q1D channel (normalized by that of a normal Q1D ballistic system) is predicted to manifest such a spectral feature as a nonmonotonic behavior at temperatures corresponding to the energy of excitation into the gapful part of the spectrum.

U2 - 10.1103/PhysRevB.69.092503

DO - 10.1103/PhysRevB.69.092503

M3 - Journal article

VL - 69

JO - Physical review B

JF - Physical review B

SN - 1098-0121

IS - 9

M1 - 092503

ER -