Supercurrent diode effect and finite-momentum superconductors

SignificanceOur work shows a fascinating application of finite-momentum superconductivity, the supercurrent diode effect, which is being reported in a growing number of experiments. We show that, under external magnetic field, Cooper pairs can acquire finite momentum so that critical currents in the...

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Published inProceedings of the National Academy of Sciences - PNAS Vol. 119; no. 15; p. e2119548119
Main Authors Yuan, Noah F Q, Fu, Liang
Format Journal Article
LanguageEnglish
Published United States National Academy of Sciences 12.04.2022
Subjects
Bilayers
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Cooper pairs
Critical current (superconductivity)
electromagnetic responses
Graphene
Magnetic fields
Momentum
nonreciprocal transport
Physical Sciences
Polarity
Spin-orbit interactions
superconductivity
Superconductors
superconductivity
nonreciprocal transport
electromagnetic responses
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Summary:SignificanceOur work shows a fascinating application of finite-momentum superconductivity, the supercurrent diode effect, which is being reported in a growing number of experiments. We show that, under external magnetic field, Cooper pairs can acquire finite momentum so that critical currents in the direction parallel and antiparallel to the Cooper pair momentum become unequal.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE)
SC0018945
Author contributions: N.F.Q.Y. and L.F. designed research, performed research, contributed new reagents/analytic tools, analyzed data, and wrote the paper.
Edited by J. C. Davis, University of Oxford, Oxford, United Kingdom; received October 29, 2021; accepted March 8, 2022
ISSN:0027-8424
1091-6490
DOI:10.1073/pnas.2119548119