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강상관계 물질 연구단
강상관계 물질 연구단
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Cooper-Pair Spin Current in a Strontium Ruthenate Heterostructure

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Title
Cooper-Pair Spin Current in a Strontium Ruthenate Heterostructure
Author(s)
Suk Bum Chung; Se Kwon Kim; Ki Hoon Lee; Yaroslav Tserkovnyak
Publication Date
2018-10
Journal
PHYSICAL REVIEW LETTERS, v.121, no.16, pp.167001 -
Publisher
AMER PHYSICAL SOC
Abstract
It has been recognized that the condensation of spin-triplet Cooper pairs requires not only broken gauge symmetry but also spin ordering as well. One consequence of this is the possibility of a Cooper-pair spin current analogous to the magnon spin current in magnetic insulators, the analogy also extending to the existence of the Gilbert damping of the collective spin-triplet dynamics. The recently fabricated hetero-structure of the thin film of the itinerant ferromagnet SrRuO3 on hulk Sr2RuO4, the best-known candidate material for a spin-triplet superconductor, offers a promising platform for generating such spin current. We show how such heterostructure allows us to not only realize the long-range spin valve but also electrically drive the collective spin mode of the spin-triplet order parameter. Our proposal represents both a novel experimental realization of superfluid spin transport and a transport signature of the spin-triplet superconductivity therein. (c)2018 American Physical Society
URI
https://pr.ibs.re.kr/handle/8788114/5097
ISSN
0031-9007
Appears in Collections:
Center for Correlated Electron Systems(강상관계 물질 연구단) > Journal Papers (저널논문)
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