Enhanced thermopower of gated silicene

Regular Article


We theoretically investigate the thermopower of silicene systems in an external electric field perpendicular to the silicene sheet. In the absence of the field, we estimate that the thermopower of pure silicene is of order ∼80 μV/K. When a finite field is applied, a comparatively big band gap is opened and the thermopower is thus enhanced by several times as compared with the case without the field. The effect of disorder is also studied, and we find only minimal difference.


Solid State and Materials 


  1. 1.
    L.D. Hicks, M.S. Dresselhaus, Phys. Rev. B 47, 12727 (1993)ADSCrossRefGoogle Scholar
  2. 2.
    L.D. Hicks, M.S. Dresselhaus, Phys. Rev. B 47, 16631 (1993)ADSCrossRefGoogle Scholar
  3. 3.
    Y.M. Zuev, W. Chang, P. Kim, Phys. Rev. Lett. 102, 096807 (2009)ADSCrossRefGoogle Scholar
  4. 4.
    P. Wei, W. Bao, Y. Pu, C.N. Lau, J. Shi, Phys. Rev. Lett. 102, 166808 (2009)ADSCrossRefGoogle Scholar
  5. 5.
    J.G. Checkelsky, N.P. Ong, Phys. Rev. B 80, 081413(R) (2009)ADSCrossRefGoogle Scholar
  6. 6.
    C.-R. Wang, W.-S. Lu, L. Hao, W.-L. Lee, T.-K. Lee, F. Lin, I.-C. Cheng, J.-Z. Chen, Phys. Rev. Lett. 107, 186602 (2011)ADSCrossRefGoogle Scholar
  7. 7.
    A.H. Castro Neto, F. Guinea, N.M.R. Peres, K.S. Novoselov, A.K. Geim, Rev. Mod. Phys. 81, 109 (2009)ADSCrossRefGoogle Scholar
  8. 8.
    E.H. Hwang, E. Rossi, S. Das Sarma, Phys. Rev. B 80, 235415 (2009)ADSCrossRefGoogle Scholar
  9. 9.
    T. Löfwander, M. Fögelstrom, Phys. Rev. B 76, 193401 (2007)ADSCrossRefGoogle Scholar
  10. 10.
    B. Dóra, P. Thalmeier, Phys. Rev. B 76, 035402 (2007)ADSCrossRefGoogle Scholar
  11. 11.
    X.Z. Yan, Y. Romiah, C.S. Ting, Phys. Rev. B 80, 165423 (2009)ADSCrossRefGoogle Scholar
  12. 12.
    L. Zhu, R. Ma, L. Sheng, M. Liu, D.N. Sheng, Phys. Rev. Lett. 104, 076804 (2010)ADSCrossRefGoogle Scholar
  13. 13.
    L. Hao, T.K. Lee, Phys. Rev. B 81, 165445 (2010)ADSCrossRefGoogle Scholar
  14. 14.
    R. Ma, L. Zhu, L. Sheng, M. Liu, D.N. Sheng, Phys. Rev. B 84, 075420 (2011)ADSCrossRefGoogle Scholar
  15. 15.
    B. Lalmi, H. Oughaddou, H. Enriquez, A. Kara, S. Vizzini, B. Ealet, B. Aufray, Appl. Phys. Lett. 97, 223109 (2010)ADSCrossRefGoogle Scholar
  16. 16.
    B. Feng, Z. Ding, S. Meng, Y. Yao, X. He, P. Cheng, L. Chen, K. Wu, Nano Lett. 12, 3507 (2012)ADSCrossRefGoogle Scholar
  17. 17.
    L. Chen, C.-C. Liu, B. Feng, X. He, P. Cheng, Z. Ding, S. Meng, Y. Yao, K. Wu, Phys. Rev. Lett. 109, 056804 (2012)ADSCrossRefGoogle Scholar
  18. 18.
    B. Aufray, A. Kara, S. Vizzini, H. Oughaddou, C. Léandri, B. Ealet, G. Le Lay, Appl. Phys. Lett. 96, 183102 (2010)ADSCrossRefGoogle Scholar
  19. 19.
    L. Meng, Y. Wang, L. Zhang, S. Du, R. Wu, L. Li, Y. Zhang, G. Li, H. Zhou, W.A. Hofer, H.-J. Gao, Nano Lett. 13, 685 (2013)ADSCrossRefGoogle Scholar
  20. 20.
    A. Kara, H. Enriquez, A.P. Seitsonen, L.C. Lew, Yan Voon, S. Vizzini, B. Aufray, H. Oughaddou, Surf. Sci. Rep. 67, 1 (2012)ADSCrossRefGoogle Scholar
  21. 21.
    H. Li, R. Zhang, Europhys. Lett. 99, 36001 (2012)ADSCrossRefGoogle Scholar
  22. 22.
    W.-F. Tsai, C.-Y. Huang, T.-R. Chang, H. Lin, H.-T. Jeng, A. Bansil, Nat. Commun. 4, 1500 (2013)ADSCrossRefGoogle Scholar
  23. 23.
    S. Cahangirov, M. Topsakal, E. Aktürk, H. Sąhin, S. Ciraci, Phys. Rev. Lett. 102, 236804 (2009)ADSCrossRefGoogle Scholar
  24. 24.
    C.-C. Liu, W. Feng, Y. Yao, Phys. Rev. Lett. 107, 076802 (2011)ADSCrossRefGoogle Scholar
  25. 25.
    N.D. Drummond, V. Zólyomi, V.I. Fal’ko, Phys. Rev. B 85, 075423 (2012)ADSCrossRefGoogle Scholar
  26. 26.
    Z.-X. Guo, S. Furuya, J. Iwata, A. Oshiyama, Phys. Rev. B 87, 235435 (2013)ADSCrossRefGoogle Scholar
  27. 27.
    L. Pan, H.J. Liu, X.J. Tan, H.Y. Lv, J. Shi, X.F. Tang, G. Zheng, Phys. Chem. Chem. Phys. 14, 13588 (2012)CrossRefGoogle Scholar
  28. 28.
    G.G. Guzmán-Verri, L.C. Lew Yan Voon, Phys. Rev. B 76, 075131 (2007)ADSCrossRefGoogle Scholar
  29. 29.
    C.-C. Liu, H. Jiang, Y. Yao, Phys. Rev. B 84, 195430 (2011)ADSCrossRefGoogle Scholar
  30. 30.
    M. Ezawa, New J. Phys. 14, 033003 (2012)ADSCrossRefGoogle Scholar
  31. 31.
    S. Datta, Electronic Transport in Mesoscopic Systems (Cambridge University Press, Cambridge, 1995)Google Scholar
  32. 32.
    H. Haug, A.-P. Jauho, Quantum Kinetics in Transport and Optics of Semiconductors, 2nd edn., Springer Solid State Series (Springer, Berlin, 2008), Vol. 123Google Scholar
  33. 33.
    J.-S. Wang, J. Wang, J.T. Lü, Eur. Phys. J. B 62, 381 (2008)ADSCrossRefGoogle Scholar
  34. 34.
    M.-H. Liu, J. Bundesmann, K. Richter, Phys. Rev. B 85, 085406 (2012)ADSCrossRefGoogle Scholar
  35. 35.
    Y. Ouyang, J. Guo, Appl. Phys. Lett. 94, 263107 (2009)ADSCrossRefGoogle Scholar
  36. 36.
    M. Cutler, N.F. Mott, Phys. Rev. 181, 1336 (1969)ADSCrossRefGoogle Scholar

Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  1. 1.Department of PhysicsShaoxing UniversityShaoxingP.R. China
  2. 2.Department of Mathematics and PhysicsShanghai University of Electric PowerShanghaiP.R. China
  3. 3.Key Laboratory for Advanced Microstructure Materials of the Ministry of Education and Department of PhysicsTongji UniversityShanghaiP.R. China

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