Phonon relaxation of subgap levels in superconducting quantum point contacts

被引：11

作者：

Ivanov, DA ^{[1
]}

Feigel'man, MV

机构：

[1] Russian Acad Sci, LD Landau Theoret Phys Inst, Moscow 117940, Russia

[2] 12 127 MIT, Cambridge, MA 02139 USA

来源：

JETP LETTERS | 1998年 / 68卷 / 11期

关键词：

D O I：

10.1134/1.567811

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Superconducting quantum point contacts are known to possess two subgap states per propagating mode. In this note we compute the low-temperature relaxation rate of the upper subgap state into the lower one with the emission of an acoustic phonon. If the reflection at the contact is small, the relaxation time may become much longer than the characteristic lifetime of a bulk quasiparticle. (C) 1998 American Institute of Physics. [S0021-3640(98)01323-1].

引用

页码：890 / 894

页数：5

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