Enhancement of anomalous Nernst effects in metallic multilayers free from proximity-induced magnetism

被引：96
作者：
Uchida, Ken-ichi [1 ,2 ]
Kikkawa, Takashi [1 ,3 ]
Seki, Takeshi [1 ]
Oyake, Takafumi [4 ]
Shiomi, Junichiro [4 ]
Qiu, Zhiyong [3 ,5 ]
Takanashi, Koki [1 ]
Saitoh, Eiji [1 ,3 ,5 ,6 ]
机构：
[1] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan
[2] Japan Sci & Technol Agcy, PRESTO, Kawaguchi, Saitama 3320012, Japan
[3] Tohoku Univ, WPI Adv Inst Mat Res, Sendai, Miyagi 9808577, Japan
[4] Univ Tokyo, Dept Mech Engn, Tokyo 1138656, Japan
[5] Japan Sci & Technol Agcy, Spin Quantum Rectificat Project, ERATO, Sendai, Miyagi 9808577, Japan
[6] Japan Atom Energy Agcy, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan
来源：
PHYSICAL REVIEW B | 2015年 / 92卷 / 09期
基金：
日本学术振兴会; 日本科学技术振兴机构;
关键词：
SPIN-SEEBECK; FE/CU MULTILAYERS;
D O I：
10.1103/PhysRevB.92.094414
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The anomalous Nernst effect (ANE) has been investigated in alternately stacked multilayer films comprising paramagnetic and ferromagnetic metals. We found that the ANE is enhanced by increasing the number of the paramagnet/ferromagnet interfaces and keeping the total thickness of the films constant, and that the enhancement appears even in the absence of magnetic proximity effects; similar behavior was observed not only in Pt/Fe multilayers but also in Au/Fe and Cu/Fe multilayers free from proximity ferromagnetism. This universal enhancement of the ANE in metallic multilayers suggests the presence of unconventional interface-induced thermoelectric conversion in the Fe films attached to the paramagnets.
引用
收藏
页数：6
相关论文
共 45 条
  • [1] Induced ferromagnetism and anisotropy of Pt layers in Fe/Pt(001) multilayers
    Antel, WJ
    Schwickert, MM
    Lin, T
    O'Brien, WL
    Harp, GR
    [J]. PHYSICAL REVIEW B, 1999, 60 (18): : 12933 - 12940
  • [2] Interplay of spin-orbit torque and thermoelectric effects in ferromagnet/normal-metal bilayers
    Avci, Can Onur
    Garello, Kevin
    Gabureac, Mihai
    Ghosh, Abhijit
    Fuhrer, Andreas
    Alvarado, Santos F.
    Gambardella, Pietro
    [J]. PHYSICAL REVIEW B, 2014, 90 (22):
  • [3] Dc effect in ferromagnetic resonance: Evidence of the spin-pumping effect?
    Azevedo, A
    Leao, LHV
    Rodriguez-Suarez, RL
    Oliveira, AB
    Rezende, SM
    [J]. JOURNAL OF APPLIED PHYSICS, 2005, 97 (10)
  • [4] APPLICATION OF SIDE-JUMP MODEL TO HALL-EFFECT AND NERNST EFFECT IN FERROMAGNETS
    BERGER, L
    [J]. PHYSICAL REVIEW B, 1972, 5 (05): : 1862 - &
  • [5] Bland J. A. C., 2005, ULTRATHIN MAGNETIC S
  • [6] Spin caloritronics
    Boona, Stephen R.
    Myers, Roberto C.
    Heremans, Joseph P.
    [J]. ENERGY & ENVIRONMENTAL SCIENCE, 2014, 7 (03) : 885 - 910
  • [7] Investigation of induced Pt magnetic polarization in Pt/Y3Fe5O12 bilayers
    Gepraegs, Stephan
    Meyer, Sibylle
    Altmannshofer, Stephan
    Opel, Matthias
    Wilhelm, Fabrice
    Rogalev, Andrei
    Gross, Rudolf
    Goennenwein, Sebastian T. B.
    [J]. APPLIED PHYSICS LETTERS, 2012, 101 (26)
  • [8] Anomalous Nernst and Hall effects in magnetized platinum and palladium
    Guo, G. Y.
    Niu, Q.
    Nagaosa, N.
    [J]. PHYSICAL REVIEW B, 2014, 89 (21):
  • [9] X-ray magnetic circular dichroism at the K-edge and proximity effects in Fe/Cu multilayers
    Hirai, K
    [J]. PHYSICA B-CONDENSED MATTER, 2004, 345 (1-4) : 209 - 212
  • [10] Transport Magnetic Proximity Effects in Platinum
    Huang, S. Y.
    Fan, X.
    Qu, D.
    Chen, Y. P.
    Wang, W. G.
    Wu, J.
    Chen, T. Y.
    Xiao, J. Q.
    Chien, C. L.
    [J]. PHYSICAL REVIEW LETTERS, 2012, 109 (10)
12345