Resonance spin-charge phenomena and mechanism of magnetoresistance anisotropy in manganite/metal bilayer structures

被引：11

作者：

Atsarkin, V. A. ^{[1
]}

Sorokin, B. V. ^{[1
]}

Borisenko, I. V. ^{[1
]}

Demidov, V. V. ^{[1
]}

Ovsyannikov, G. A. ^{[1
]}

机构：

[1] RAS, Kotelnikov Inst Radio Engn & Elect, 11-7 Mokhovaya Str, Moscow 125009, Russia

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2016年 / 49卷 / 12期

关键词：

anisotropic magnetoresistance; spin current; ferromagnetic resonance; manganite; bilayer structure; PHYSICS; FILMS;

D O I：

10.1088/0022-3727/49/12/125003

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The dc voltage generated under ferromagnetic resonance has been studied in bilayer structures based on manganite thin epitaxial films La0.67Sr0.33MnO3 (LSMO) and non-magnetic metals (Au, Pt, and SrRuO3) in the temperature range up to the Curie point. The effect is shown to be caused by two different phenomena: (1) the resonance dc electromotive force related to anisotropic magnetoresistance (AMR) in the manganite film and (2) pure spin current (spin pumping) registered by means of the inverse spin Hall effect in normal metal. The two phenomena were separated using the angular dependence of the effect, the external magnetic field H-0 being rotated in the film plane. It was found that the AMR mechanism in the manganite films differs substantially from that in traditional ferromagnetic metals being governed by colossal magnetoresistance together with in-plane magnetic anisotropy. The spin pumping effect registered in the bilayers was found to be much lower than that reported for common ferromagnets; possible reasons are discussed.

引用

页数：8

共 40 条

[1] Transport properties, thermodynamic properties, and electronic structure of SrRuO3 [J].

Allen, PB ;

Berger, H ;

Chauvet, O ;

Forro, L ;

Jarlborg, T ;

Junod, A ;

Revaz, B ;

Santi, G .

PHYSICAL REVIEW B, 1996, 53 (08) :4393-4398

[2] CONSIDERATIONS ON DOUBLE EXCHANGE [J].

ANDERSON, PW ;

HASEGAWA, H .

PHYSICAL REVIEW, 1955, 100 (02) :675-681

[3] Angular dependence of inverse spin-Hall effect induced by spin pumping investigated in a Ni81Fe19/Pt thin film [J].

Ando, K. ;

Kajiwara, Y. ;

Takahashi, S. ;

Maekawa, S. ;

Takemoto, K. ;

Takatsu, M. ;

Saitoh, E. .

PHYSICAL REVIEW B, 2008, 78 (01)

[4] Magnetoresonance EMF in thin manganite films [J].

Atsarkin, V. A. ;

Sorokin, B. V. .

JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS, 2014, 119 (03) :567-572

[5] Resonant magnetoresistance in the vicinity of a phase transition [J].

Atsarkin, V. A. ;

Demidov, V. V. .

JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS, 2013, 116 (01) :95-100

[6] Effect of resonance microwave irradiation on manganite film conductivity around the ferromagnetic transition [J].

Atsarkin, V. A. ;

Demidov, V. V. ;

Levkin, L. V. ;

Petrzhik, A. M. .

PHYSICAL REVIEW B, 2010, 82 (14)

[7]

Atsarkin V A, 2014, ZH EKSP TEOR FIZ, V146, P645

[8]

Atsarkin VA, 2013, ZH EKSP TEOR FIZ, V143, P109

[9] Spin pumping and anisotropic magnetoresistance voltages in magnetic bilayers: Theory and experiment [J].

Azevedo, A. ;

Vilela-Leao, L. H. ;

Rodriguez-Suarez, R. L. ;

Santos, A. F. Lacerda ;

Rezende, S. M. .

PHYSICAL REVIEW B, 2011, 83 (14)

[10] Metal-insulator transition in epitaxial films of LaMnO3 manganites grown by magnetron sputtering [J].

Borisenko, I. V. ;

Karpov, M. A. ;

Ovsyannikov, G. A. .

TECHNICAL PHYSICS LETTERS, 2013, 39 (12) :1027-1030

← 1 2 3 4 →