Magnetic and magnetotransport characterization of La0.7Sr0.3MnO3/YBCO/La0.7Sr0.3MnO3/YBCO spin valve

被引：3

作者：

Dybko, K. ^{[1
]}

Aleshkevych, P. ^{[1
]}

Sawicki, M. ^{[1
]}

Przyslupski, P. ^{[1
]}

机构：

[1] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2015年 / 373卷

关键词：

Spin valve; Manganite; Superconductivity;

D O I：

10.1016/j.jmmm.2014.02.037

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present magnetoresistance measurements on La0.7Sr0.3MnO3/YBCO/La0.7Sr0.3MnO3/YBCO (L1/Y1/L2/Y) heterostructure. The L1/Y1/L2/Y spin valve shows large magnetoresistance peaks in coercive field at temperatures below the onset of the superconducting transition. The rotation in parallel magnetic field demonstrates a change of magnetoresistance: simultaneously the transition temperature to superconducting state T-c0(H-450 Oe, beta) exhibits nonmonotonic dependence due to change of noncolinearity of magnetic moments of LSMO layers. Nonmonotonic change of the transition temperature as a function of angle is interpreted as a signature of generation of the triplet component superconducting phase in the L1/Y1/L2/Y heterostructure. (C) 2014 Elsevier B.V. All rights reserved,

引用

页码：48 / 52

页数：5

共 15 条

[1] DERIVATION OF THE RESONANCE FREQUENCY FROM THE FREE-ENERGY OF FERROMAGNETS [J].

BASELGIA, L ;

WARDEN, M ;

WALDNER, F ;

HUTTON, SL ;

DRUMHELLER, JE ;

HE, YQ ;

WIGEN, PE ;

MARYSKO, M .

PHYSICAL REVIEW B, 1988, 38 (04) :2237-2242

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

Bergeret, FS ;

Volkov, AF ;

Efetov, KB .

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

[3] FROM ISOTROPIC TO ANISOTROPIC SUPERCONDUCTORS - A SCALING APPROACH [J].

BLATTER, G ;

GESHKENBEIN, VB ;

LARKIN, AI .

PHYSICAL REVIEW LETTERS, 1992, 68 (06) :875-878

[4] Possible spin-triplet superconducting phase in the La0.7Sr0.3MnO3/YBa2Cu3O7/La0.7Sr0.3MnO3 trilayer [J].

Dybko, K. ;

Werner-Malento, K. ;

Aleshkevych, P. ;

Wojcik, M. ;

Sawicki, M. ;

Przyslupski, P. .

PHYSICAL REVIEW B, 2009, 80 (14)

[5] Triplet supercurrents in clean and disordered half-metallic ferromagnets [J].

Eschrig, Matthias ;

Loefwander, Tomas .

NATURE PHYSICS, 2008, 4 (02) :138-143

[6]

Fominov Ya. V., 2010, [Письма в Журнал экспериментальной и теоретической физики, Pis'ma v Zhurnal eksperimental'noi i teoreticheskoi fiziki], V91, P329

[7] Odd triplet pairing in clean superconductor/ferromagnet heterostructures [J].