Advertisement

Spin Wave Effects in Transport Between a Ferromagnet and a Weyl Semimetal Surface

  • A. Kononov
  • O. O. Shvetsov
  • A. V. Timonina
  • N. N. Kolesnikov
  • E. V. DeviatovEmail author
Article
  • 8 Downloads

Abstract

We experimentally investigate spin-polarized transport between a ferromagnetic Ni electrode and a surface of Weyl semimetal, realized in a thick WTe2 single crystal. For highly-transparent Ni-WTe2 planar junctions, we observe non-Ohmic dV/dI(I) behavior with an overall increase of differential resistance dV/dI with current bias, which is accomplished by peaks and dips structures. This behavior is inconsistent with trivial interface scattering, but it is well known for spin-polarized transport with magnon emission. Thus, we interpret the experimental results in terms of spin wave excitation in spin textures in the WTe2 topological surface states, which is supported by the obtained magnetic field and temperature dV/dI(I) dependencies.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    M. Z. Hasan and C. L. Kane, Rev. Mod. Phys. 82, 3045 (2010).ADSCrossRefGoogle Scholar
  2. 2.
    X.-L. Qi and S.-C. Zhang, Rev. Mod. Phys. 83, 1057 (2011).ADSCrossRefGoogle Scholar
  3. 3.
    A. Bansil, H. Lin, and T. Das, Rev. Mod. Phys. 88, 021004 (2016).ADSCrossRefGoogle Scholar
  4. 4.
    C.-K. Chiu, J.C. Teo, A.P. Schnyder, and S. Ryu, Rev. Mod. Phys. 88, 035005 (2016).ADSCrossRefGoogle Scholar
  5. 5.
    N.P. Armitage, E. J. Mele, and A. Vishwanath, Rev. Mod. Phys. 90, 015001 (2018).ADSCrossRefGoogle Scholar
  6. 6.
    P. Li, Y. Wen, X. He, Q. Zhang, C. Xia, Z.-M. Yu, S. A. Yang, Z. Zhu, H.N. Alshareef, and X.-X. Zhang, Nature Comm. 8, 2150 (2017).ADSCrossRefGoogle Scholar
  7. 7.
    A.A. Soluyanov, D. Gresch, Z.Wang, Q.Wu,M. Troyer, X. Dai, and B.A. Bernevig, Nature 527, 495 (2015).ADSCrossRefGoogle Scholar
  8. 8.
    M.N. Ali, J. Xiong, S. Flynn, J. Tao, Q.D. Gibson, L.M. Schoop, T. Liang, N. Haldolaarachchige, M. Hirschberger, N.P. Ong, and R.J. Cava, Nature (London) 514, 205 (2014).ADSCrossRefGoogle Scholar
  9. 9.
    H. Y. Lv, W. J. Lu, D. F. Shao, Y. Liu, S.G. Tan, and Y.P. Sun, Europhys. Lett. 110, 37004 (2015).ADSCrossRefGoogle Scholar
  10. 10.
    J. Jiang, F. Tang, X.C. Pan et al. (Collaboration), Phys. Rev. Lett. 115, 166601 (2015).ADSCrossRefGoogle Scholar
  11. 11.
    D. Rhodes, S. Das, Q.R. Zhang, B. Zeng, N.R. Pradhan, N. Kikugawa, E. Manousakis, and L. Balicas, Phys. Rev. B 92, 125152 (2015).ADSCrossRefGoogle Scholar
  12. 12.
    Y. Wang, K. Wang, J. Reutt-Robey, J. Paglione, and M. S. Fuhrer, Phys. Rev. B 93, 121108 (2016).ADSCrossRefGoogle Scholar
  13. 13.
    P. K. Das, D. D. Sante, I. Vobornik et al. (Collaboration), Nature Comm. 7, 10847 (2016).ADSCrossRefGoogle Scholar
  14. 14.
    B. Feng, Y.-H. Chan, Y. Feng et al. (Collaboration), Phys. Rev. B 94, 195134 (2016).ADSCrossRefGoogle Scholar
  15. 15.
    Y. Sun, Y. Zhang, C. Felser, and B. Yan, Phys. Rev. Lett. 117, 146403 (2016).ADSCrossRefGoogle Scholar
  16. 16.
    B.Q. Lv, S. Muff, T. Qian et al. (Collaboration), Phys. Rev. Lett. 115, 217601 (2015).ADSCrossRefGoogle Scholar
  17. 17.
    S.-Y. Xu, I. Belopolski, D. S. Sanchez et al. (Collaboration), Phys. Rev. Lett. 116, 096801 (2016).ADSCrossRefGoogle Scholar
  18. 18.
    Y. Tserkovnyak, A. Brataas, G. E.W. Bauer, and B. I. Halperin, Rev. Mod. Phys. 77, 1375 (2005).ADSCrossRefGoogle Scholar
  19. 19.
    J. C. Slonczewski, J. Magn. Magn. Mater. 159, L1 (1996).Google Scholar
  20. 20.
    D. MacNeill, G. M. Stiehl, M.H.D. Guimaraes, R. A. Buhrman, J. Park, and D.C. Ralph, Nature Phys. 13, 300 (2017).ADSCrossRefGoogle Scholar
  21. 21.
    M. Tsoi, A.G.M. Jansen, J. Bass, W.-C. Chiang, M. Seck, V. Tsoi, and P. Wyder, Phys. Rev. Lett. 80, 4281 (1998).ADSCrossRefGoogle Scholar
  22. 22.
    M. Tsoi, A.G.M. Jansen, J. Bass, W.-C. Chiang, V. Tsoi, and P. Wyder, Nature 406, 46 (2000).ADSCrossRefGoogle Scholar
  23. 23.
    O.P. Balkashin, V. V. Fisun, I. K. Yanson, L.Yu. Triputen, A. Konovalenko, and V. Korenivski, Phys. Rev. B 79, 092419 (2009).ADSCrossRefGoogle Scholar
  24. 24.
    T. Balashov, A. F. Takács, M. Däne, A. Ernst, P. Bruno, and W. Wulfhekel, Phys. Rev. B 78, 174404 (2008).ADSCrossRefGoogle Scholar
  25. 25.
    E.B. Borisenko, V. A. Berezin, N. N. Kolesnikov, V. K. Gartman, D. V. Matveev, and O. F. Shakhlevich, Phys. Solid State 59, 1310 (2017).ADSCrossRefGoogle Scholar
  26. 26.
    A. Sidorov, A.E. Petrova, A. N. Pinyagin, N.N. Kolesnikov, S.S. Khasanov, and S.M. Stishov, JETP 122, 1047 (2016).ADSCrossRefGoogle Scholar
  27. 27.
    O.O. Shvetsov, A. Kononov, A.V. Timonina, N.N. Kolesnikov, and E.V. Deviatov, JETP Lett. 107, 774 (2018). https://doi.org/10.1134/S0021364018120020ADSCrossRefGoogle Scholar
  28. 28.
    A. Kononov, O.O. Shvetsov, S.V. Egorov, A.V. Timonina, N.N. Kolesnikov, and E.V. Deviatov, EPL 122, 27004 (2018). doi: 10.1209/0295-5075/122/27004.ADSCrossRefGoogle Scholar
  29. 29.
    E.B. Myers, D.C. Ralph, J. A. Katine, R.N. Louie, and R. A. Buhrman, Science 285, 867 (1999).CrossRefGoogle Scholar

Copyright information

© Pleiades Publishing, Inc. 2019

Authors and Affiliations

  • A. Kononov
    • 1
  • O. O. Shvetsov
    • 1
  • A. V. Timonina
    • 1
  • N. N. Kolesnikov
    • 1
  • E. V. Deviatov
    • 1
    Email author
  1. 1.Institute of Solid State Physics of the Russian Academy of SciencesChernogolovkaRussia

Personalised recommendations