Observation of Thermoelectric Currents in High-Field Superconductor-Ferromagnet Tunnel Junctions

被引：110

作者：

Kolenda, S. ^{[1
]}

Wolf, M. J. ^{[1
]}

Beckmann, D. ^{[1
]}

机构：

[1] Karlsruhe Inst Technol, Inst Nanotechnol, D-76021 Karlsruhe, Germany

来源：

PHYSICAL REVIEW LETTERS | 2016年 / 116卷 / 09期

关键词：

SPIN IMBALANCE; SUPERCURRENTS; SPINTRONICS; INJECTION; ALUMINUM;

D O I：

10.1103/PhysRevLett.116.097001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on the experimental observation of spin-dependent thermoelectric currents in superconductor-ferromagnet tunnel junctions in high magnetic fields. The thermoelectric signals are due to a spin-dependent lifting of the particle-hole symmetry, and are found to be in excellent agreement with recent theoretical predictions. The maximum Seebeck coefficient inferred from the data is about -100 mu V/K, much larger than commonly found in metallic structures. Our results directly prove the coupling of spin and heat transport in high-field superconductors.

引用

页数：5

共 48 条

[1] THEORY OF FERMI-LIQUID EFFECTS IN HIGH-FIELD TUNNELING [J].

ALEXANDER, JAX ;

ORLANDO, TP ;

RAINER, D ;

TEDROW, PM .

PHYSICAL REVIEW B, 1985, 31 (09) :5811-5825

[2] Spatially resolved measurement of nonequilibrium quasiparticle relaxation in superconducting Al [J].

Arutyunov, K. Yu. ;

Auraneva, H. -P. ;

Vasenko, A. S. .

PHYSICAL REVIEW B, 2011, 83 (10)

[3]

Bauer GEW, 2012, NAT MATER, V11, P391, DOI [10.1038/NMAT3301, 10.1038/nmat3301]

[4] Phase-dependent heat transport through magnetic Josephson tunnel junctions [J].

Bergeret, F. S. ;

Giazotto, F. .

PHYSICAL REVIEW B, 2013, 88 (01)

[5] Injection of nonequilibrium quasiparticles into Zeeman-split superconductors: A way to create long-range spin imbalance [J].

Bobkova, I. V. ;

Bobkov, A. M. .

PHYSICAL REVIEW B, 2016, 93 (02)

[6] Long-range spin imbalance in mesoscopic superconductors under Zeeman splitting [J].

Bobkova, I. V. ;

Bobkov, A. M. .

JETP LETTERS, 2015, 101 (02) :118-124

[7] Phase dependent thermopower in Andreev interferometers [J].

Eom, J ;

Chien, CJ ;

Chandrasekhar, V .

PHYSICAL REVIEW LETTERS, 1998, 81 (02) :437-440

[8] Spin-polarized supercurrents for spintronics [J].

Eschrig, Matthias .

PHYSICS TODAY, 2011, 64 (01) :43-49

[9]

Flipse J, 2012, NAT NANOTECHNOL, V7, P166, DOI [10.1038/NNANO.2012.2, 10.1038/nnano.2012.2]

[10] Opportunities for mesoscopics in thermometry and refrigeration:: Physics and applications [J].

Giazotto, F ;

Heikkilä, TT ;

Luukanen, A ;

Savin, AM ;

Pekola, JP .

REVIEWS OF MODERN PHYSICS, 2006, 78 (01) :217-274

← 1 2 3 4 5 →