Journal of Electronic Materials

, Volume 48, Issue 3, pp 1380–1385 | Cite as

Effect of 4d and 5d Transition-Metal Insertions to Spin-Dependent Transports in Fe/MgO Superlattices

  • Shunta Ando
  • Abdul-Muizz PradiptoEmail author
  • Toru Akiyama
  • Tomonori Ito
  • Kohji Nakamura
5th International Conference of Asian Union of Magnetics Societies
Part of the following topical collections:
  1. 5th International Conference of Asian Union of Magnetics Societies (IcAUMS)


We systematically investigated the effect of the spin–orbit coupling (SOC) to the tunneling magnetoresistance (TMR) ratio of the Fe/MgO (001) superlattices with inserted 4d (Ru, Rh, Pd) and 5d (Os, Ir, Pt) transition-metal (TM) monolayers by the first-principles full-potential linearized augmented plane wave method. We find that the TMR ratios for both 4d and 5d TM insertions decrease due to the introduction of the SOC. We observe that in all systems, the TMR values are mainly determined by the electric conductivities in the parallel magnetic configuration, as they are two orders of magnitude larger than the conductivities in the antiparallel magnetic configuration. When the SOC is introduced, we find that the TMR values are reduced depending on the SOC strength, and the largest TMR reduction occurs for the Pt monolayer insertion. In-plane wave vector (k) dependence of the electric conductivity shows that the reduction of TMR is indeed related to the decrease of electric conductivity in the parallel magnetic configuration.


Tunneling magnetoresistance spin–orbit coupling transition-metal insertion first-principles calculations 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.



Works were supported by JSPS KAKENHI Grant Numbers 15H05702 and 16K05415, and the Cooperative Research Program of Network Joint Research Center for Materials and Devices. Computations were performed at the Research Institute for Information Technology, Kyushu University.


  1. 1.
    S. Ikeda, J. Hayakawa, Y. Ashizawa, Y.M. Lee, K. Miura, H. Hasegawa, M. Tsunoda, F. Matsukura, and H. Ohno, Appl. Phys. Lett. 93, 082508 (2008).CrossRefGoogle Scholar
  2. 2.
    J. Mathon and A. Umerski, Phys. Rev. B 63, 220403(R) (2001).CrossRefGoogle Scholar
  3. 3.
    X.-G. Zhang, W.H. Butler, and A. Bandyopadhyay, Phys. Rev. B 68, 092402 (2003).CrossRefGoogle Scholar
  4. 4.
    K.D. Belashchenko, J. Velev, and E.Y. Tsymbal, Phys. Rev. B 72, 140404(R) (2005).CrossRefGoogle Scholar
  5. 5.
    J. Zhang, Y. Wang, X.-G. Zhang, and X.F. Han, Phys. Rev. B 82, 134449 (2010).CrossRefGoogle Scholar
  6. 6.
    P. Bose, P. Zahn, J. Henk, and I. Mertig, Phys. Rev. B 82, 014412 (2010).CrossRefGoogle Scholar
  7. 7.
    S. Ishikawa, H. Sato, M. Yamanouchi, S. Ikeda, S. Fukami, F. Matsukura, and H. Ohno, J. Appl. Phys. 115, 17C719 (2014).CrossRefGoogle Scholar
  8. 8.
    M. Wang, W. Cai, K. Cao, J. Zhou, J. Wrona, S. Peng, H. Yang, J. Wei, W. Kang, Y. Zhang, J. Langer, B. Ocker, A. Fert, and W. Zhao, Nat. Commun. 9, 671 (2018).CrossRefGoogle Scholar
  9. 9.
    J.P. Perdew, K. Burke, and M. Ernzerhof, Phys. Rev. Lett. 77, 3865 (1996).CrossRefGoogle Scholar
  10. 10.
    E. Wimmer, H. Krakauer, M. Weinert, and A.J. Freeman, Phys. Rev. B 24, 864 (1981).CrossRefGoogle Scholar
  11. 11.
    K. Nakamura, T. Ito, A.J. Freeman, L. Zhong, and J. Fernandez-de-Castro, Phys. Rev. B 67, 014420 (2003).CrossRefGoogle Scholar
  12. 12.
    M. Weinert, E. Wimmer, and A.J. Freeman, Phys. Rev. B 26, 4571 (1982).CrossRefGoogle Scholar
  13. 13.
    C. Herring, in Magnetism, ed. by G.T. Rado, H. Suhl (Academic Press, 1966).Google Scholar
  14. 14.
    L.M. Sandratskii, Adv. Phys. 47, 91 (1998).CrossRefGoogle Scholar
  15. 15.
    C. Tiusan, J. Faure-Vincent, M. Sicot, M. Hehn, C. Bellouard, F. Montaigne, S. Andrieu, and A. Schuhl, Mater. Sci. Eng., B 126, 112 (2006).CrossRefGoogle Scholar
  16. 16.
    C. Li and A.J. Freeman, Phys. Rev. B 43, 780 (1991).CrossRefGoogle Scholar
  17. 17.
    T. Urano and T. Kanaji, J. Phys. Soc. Jpn. 57, 3403 (1988).CrossRefGoogle Scholar
  18. 18.
    R. Yu, D. Singh, and H. Krakauer, Phys. Rev. B 43, 6411 (1991).CrossRefGoogle Scholar
  19. 19.
    Y. Wang, J. Zhang, X.-G. Zhang, H.-P. Chang, and X.F. Han, Phys. Rev. B 82, 054405 (2010).CrossRefGoogle Scholar
  20. 20.
    W.H. Butler, X.-G. Zhang, T.C. Schulthess, and J.M. MacLaren, Phys. Rev. B 63, 054416 (2001).CrossRefGoogle Scholar

Copyright information

© The Minerals, Metals & Materials Society 2018

Authors and Affiliations

  • Shunta Ando
    • 1
  • Abdul-Muizz Pradipto
    • 1
    Email author
  • Toru Akiyama
    • 1
  • Tomonori Ito
    • 1
  • Kohji Nakamura
    • 1
  1. 1.Department of Physics EngineeringMie UniversityTsuJapan

Personalised recommendations