2014年4月
Controllable Rashba Spin-Orbit Interaction in Artificially Engineered Superlattices Involving the Heavy-Fermion Superconductor CeCoIn5
PHYSICAL REVIEW LETTERS
- 巻
- 112
- 号
- 15
- 開始ページ
- 156404-1
- 終了ページ
- 156404-5
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1103/PhysRevLett.112.156404
- 出版者・発行元
- AMER PHYSICAL SOC
By using a molecular beam epitaxy technique, we fabricate a new type of superconducting superlattices with controlled atomic layer thicknesses of alternating blocks between the heavy-fermion superconductor CeCoIn5, which exhibits a strong Pauli pair-breaking effect, and nonmagnetic metal YbCoIn5. The introduction of the thickness modulation of YbCoIn 5 block layers breaks the inversion symmetry centered at the superconducting block of CeCoIn5. This configuration leads to dramatic changes in the temperature and angular dependence of the upper critical field, which can be understood by considering the effect of the Rashba spin-orbit interaction arising from the inversion symmetry breaking and the associated weakening of the Pauli pair-breaking effect. Since the degree of thickness modulation is a design feature of this type of superlattices, the Rashba interaction and the nature of pair breaking are largely tunable in these modulated superlattices with strong spin-orbit coupling.
- リンク情報
-
- DOI
- https://doi.org/10.1103/PhysRevLett.112.156404
- J-GLOBAL
- https://jglobal.jst.go.jp/detail?JGLOBAL_ID=201402271037211503
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000335228000007&DestApp=WOS_CPL
- ID情報
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- DOI : 10.1103/PhysRevLett.112.156404
- ISSN : 0031-9007
- eISSN : 1079-7114
- J-Global ID : 201402271037211503
- Web of Science ID : WOS:000335228000007