Quantitative Disentanglement of the Spin Seebeck, Proximity-Induced, and Ferromagnetic-Induced Anomalous Nernst Effect in Normal-Metal-Ferromagnet Bilayers

被引：46

作者：

Bougiatioti, Panagiota ^{[1
]}

Klewe, Christoph ^{[1
,2
]}

Meier, Daniel ^{[1
]}

Manos, Orestis ^{[1
]}

Kuschel, Olga ^{[3
,4
]}

Wollschlaeger, Joachim ^{[3
,4
]}

Bouchenoire, Laurence ^{[5
,6
]}

Brown, Simon D. ^{[5
,6
]}

Schmalhorst, Jan-Michael ^{[1
]}

Reiss, Guenter ^{[1
]}

Kuschel, Timo ^{[1
,7
]}

机构：

[1] Bielefeld Univ, Dept Phys, Ctr Spinelect Mat & Devices, Univ Str 25, D-33615 Bielefeld, Germany

[2] Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA

[3] Osnabruck Univ, Dept Phys, Barbarastr 7, D-49076 Osnabruck, Germany

[4] Osnabruck Univ, Ctr Phys & Chem New Mat, Barbarastr 7, D-49076 Osnabruck, Germany

[5] European Synchrotron Radiat Facil, XMaS, F-38043 Grenoble, France

[6] Univ Liverpool, Dept Phys, Liverpool L69 7ZE, Merseyside, England

[7] Univ Groningen, Zernike Inst Adv Mat, Phys Nanodevices, Nijenborgh 4, NL-9747 AG Groningen, Netherlands

来源：

PHYSICAL REVIEW LETTERS | 2017年 / 119卷 / 22期

关键词：

XMAS BEAMLINE;

D O I：

10.1103/PhysRevLett.119.227205

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We identify and investigate thermal spin transport phenomena in sputter-deposited Pt/NiFe2Ox (4 >= x >= 0) bilayers. We separate the voltage generated by the spin Seebeck effect from the anomalous Nernst effect (ANE) contributions and even disentangle the ANE in the ferromagnet (FM) from the ANE produced by the Pt that is spin polarized due to its proximity to the FM. Further, we probe the dependence of these effects on the electrical conductivity and the band gap energy of the FM film varying from nearly insulating NiFe2O4 to metallic Ni33Fe67. A proximity-induced ANE could only be identified in the metallic Pt/Ni33Fe67 bilayer in contrast to Pt/NiFe2Ox (x > 0) samples. This is verified by the investigation of static magnetic proximity effects via x-ray resonant magnetic reflectivity.

引用

页数：6

共 14 条

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Zha, Guo-Qiao
Covaci, Lucian
Zhou, Shi-Ping
Peeters, F. M.
PHYSICAL REVIEW B, 2010, 82 (14)
[2] Longitudinal spin Seebeck effect and anomalous Nernst effect in CoFeB/non-magnetic metal bilayers
Gamino, M.
Santos, J. G. S.
Souza, A. L. R.
Melo, A. S.
Della Pace, R. D.
Silva, E. F.
Oliveira, A. B.
Rodriguez-Suarez, R. L.
Bohn, F.
Correa, M. A.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2021, 527
[3] Proximity-induced spin ordering at the interface between a ferromagnetic metal and a magnetic semiconductor
Men'shov, V. N.
Tugushev, V. V.
Caprara, S.
Chulkov, E. V.
PHYSICAL REVIEW B, 2010, 81 (23)
[4] Unambiguous separation of the inverse spin Hall and anomalous Nernst effects within a ferromagnetic metal using the spin Seebeck effect
Wu, Stephen M.
Hoffman, Jason
Pearson, John E.
Bhattacharya, Anand
APPLIED PHYSICS LETTERS, 2014, 105 (09)
[5] Magnetization in Superconductor–Ferromagnetic Metal Bilayers Induced by the Inverse Proximity Effect
V. O. Yagovtsev
N. G. Pugach
E. G. Ekomasov
V. A. Ozerov
B. G. Lvov
Physics of Metals and Metallography, 2021, 122 : 847 - 854
[6] Proximity-induced spin-polarized magnetocaloric effect in transition metal dichalcogenides
Cortes, Natalia
Pena, Francisco J.
Negrete, Oscar
Vargas, Patricio
PHYSICAL REVIEW B, 2022, 105 (01)
[7] Magnetization in Superconductor-Ferromagnetic Metal Bilayers Induced by the Inverse Proximity Effect
Yagovtsev, V. O.
Pugach, N. G.
Ekomasov, E. G.
Ozerov, V. A.
Lvov, B. G.
PHYSICS OF METALS AND METALLOGRAPHY, 2021, 122 (09): : 847 - 854
[8] Direct Observation of Strong Anomalous Hall Effect and Proximity-Induced Ferromagnetic State in SrIrO3
Jaiswal, Arun Kumar
Wang, Di
Wollersen, Vanessa
Schneider, Rudolf
Le Tacon, Matthieu
Fuchs, Dirk
ADVANCED MATERIALS, 2022, 34 (14)
[9] Theoretical Study of Magnetism Induced by Proximity Effect in a Ferromagnetic Josephson Junction with a Normal Metal
Hikino, Shin-ichi
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2017, 86 (09)
[10] TRANSITION FROM THE TUNNELING REGIME TO POINT CONTACT AND PROXIMITY-INDUCED JOSEPHSON EFFECT IN LEAD NORMAL-METAL NANOJUNCTIONS
AGRAIT, N
RODRIGO, JG
VIEIRA, S
PHYSICAL REVIEW B, 1992, 46 (09): : 5814 - 5817

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