Control of Andreev bound state population and related charge-imbalance effect

Motivated by recent experimental research, we study a superconducting constriction subject to a dc and ac phase bias. We consider the processes whereby the ac drive promotes one quasiparticle from an Andreev bound state to a delocalized state outside the superconducting gap. We demonstrate that with...

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Published inJournal of physics. Condensed matter Vol. 27; no. 9; p. 095701
Main Authors Riwar, Roman-Pascal, Houzet, Manuel, Meyer, Julia S, Nazarov, Yuli V
Format Journal Article
LanguageEnglish
Published England IOP Publishing 11.03.2015
IOP Publishing [1989-....]
Subjects
ac driven superconducting junction
Andreev bound state
Asymmetry
Bias
Charge
charge imbalance
Condensed matter
Constrictions
Direct current
Physics
Stresses
Superconductivity
ac driven superconducting junction
Andreev bound state
Charge Imbalance
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Summary:Motivated by recent experimental research, we study a superconducting constriction subject to a dc and ac phase bias. We consider the processes whereby the ac drive promotes one quasiparticle from an Andreev bound state to a delocalized state outside the superconducting gap. We demonstrate that with these processes one can control the population of the Andreev bound states in the constriction. We stress an interesting charge asymmetry of these processes that may produce a charge imbalance of accumulated quasiparticles, which depends on the phase.
Bibliography:JPCM-103481.R1
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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ISSN:0953-8984
1361-648X
DOI:10.1088/0953-8984/27/9/095701