A spin triplet supercurrent in half metal ferromagnet/superconductor junctions with the interfacial Rashba spin-orbit coupling

被引：33

作者：

Niu, ZhiPing ^{[1
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, Coll Sci, Nanjing 210016, Jiangsu, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2012年 / 101卷 / 06期

基金：

中国国家自然科学基金;

关键词：

SUPERCONDUCTOR-FERROMAGNET STRUCTURES; HETEROSTRUCTURES;

D O I：

10.1063/1.4743001

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

dc Josephson currents in s-wave superconductor/half metal ferromagnet (HMF)/s-wave superconductor junctions are investigated. We propose the interfacial Rashba spin-orbit coupling as a possible mechanism giving rise to the spin flip Andreev reflection, which results in the singlet-triplet conversion at HMF/superconductor interfaces. When the magnetization direction of the HMF and that of the effective spin-orbit magnetic field are noncolinear, a long-ranged spin triplet supercurrent appears. The supercurrent strongly depends on the magnetization direction of the HMF and can be enhanced by the Rashba spin-orbit coupling strength. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4743001]

引用

页数：3

共 33 条

[1]

ANDREEV AF, 1964, SOV PHYS JETP-USSR, V19, P1228

[2] Long-range supercurrents through half-metallic ferromagnetic CrO2 [J].

Anwar, M. S. ;

Czeschka, F. ;

Hesselberth, M. ;

Porcu, M. ;

Aarts, J. .

PHYSICAL REVIEW B, 2010, 82 (10)

[3] Odd triplet superconductivity and related phenomena in superconductor-ferromagnet structures [J].

Bergeret, FS ;

Volkov, AF ;

Efetov, KB .

REVIEWS OF MODERN PHYSICS, 2005, 77 (04) :1321-1373

[4] Long-range proximity effects in superconductor-ferromagnet structures [J].

Bergeret, FS ;

Volkov, AF ;

Efetov, KB .

PHYSICAL REVIEW LETTERS, 2001, 86 (18) :4096-4099

[5] Combined effect of Zeeman splitting and spin-orbit interaction on the Josephson current in a superconductor-two-dimensional electron gas-superconductor structure [J].

Bezuglyi, EV ;

Rozhavsky, AS ;

Vagner, ID ;

Wyder, P .

PHYSICAL REVIEW B, 2002, 66 (05) :1-4

[6] Proximity effects in superconductor-ferromagnet heterostructures [J].

Buzdin, AI .

REVIEWS OF MODERN PHYSICS, 2005, 77 (03) :935-976

[7] Topological superconducting phase and Majorana fermions in half-metal/superconductor heterostructures [J].

Chung, Suk Bum ;

Zhang, Hai-Jun ;

Qi, Xiao-Liang ;

Zhang, Shou-Cheng .

PHYSICAL REVIEW B, 2011, 84 (06)

[8] Josephson current through a quantum dot with spin-orbit coupling [J].

Dell'Anna, L. ;

Zazunov, A. ;

Egger, R. ;

Martin, T. .

PHYSICAL REVIEW B, 2007, 75 (08)

[9] Andreev reflection from noncentrosymmetric superconductors and Majorana bound-state generation in half-metallic ferromagnets [J].

Duckheim, Mathias ;

Brouwer, Piet W. .

PHYSICAL REVIEW B, 2011, 83 (05)

[10] Spin-flip scattering and critical currents in ballistic half-metallic d-wave Josephson junctions [J].

Enoksen, Henrik ;

Linder, Jacob ;

Sudbo, Asle .

PHYSICAL REVIEW B, 2012, 85 (01)

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