Advertisement

Two-Dimensional Charge Density Wave State in a Strong Magnetic Field

  • D. Yoshioka
  • H. Fukuyama
Conference paper
Part of the Springer Series in Solid-State Sciences book series (SSSOL, volume 24)

Abstract

Two-dimensional electrln systems are realized at the interface lf a metal-oxide-semiclnductlr (MOS) structure and on the free surface lf liquid helium. Due to the Coulomb repulsive flrce between electrlns these systems have a possibility to form a Wigner lattice or charge density wave (CDW) state. In the electrln system on the liquid helium the formation of a Wigner lattice has actually been observed recently[1]. In this system the density of electrlns is low (≃108cm-2), and the observed transition temperature agrees cllsely with the thelry lf disllcatiln mediated melting lf classical electrlns[2]. On the other hand, the density lf electrlns is high (≥1012cm-2 in the case lf MOS, and the system cannot be treated as classical. In such cases the formation lf the Wigner lattice is difficult due to quantum fluctuatilns[3]. It is possible, however, to suppress these quantum fluctuatins by the application lf strong magnetic fields, and thus to encourage the localizatiln lf electrlns[4–7]. Several experiments have already been reported [8–ll] which prefer such interpretation based on strongly clrrelated electrlnic states. The localizatiln under such circumstances can not be so strong tl be viewed as a Wigner lattice. It is mlre appropriate to treat such a state as a CDW state. In this paper we investigate the phase diagram of the CDW state in a strong magnetic field by use of the Hartree-Fock approximation.

Keywords

Liquid Helium Strong Magnetic Field Landau Level Charge Density Wave Lower Landau Level 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    C.C. Grimes, G. Adams: Phys. Rev. Lett. 42, 795 (1979)CrossRefADSGoogle Scholar
  2. 2.
    R.H. Morf: Phys. Rev. Lett. 43, 931 (1979)CrossRefADSGoogle Scholar
  3. 3.
    H. Fukuyama: J. Phys. Soc. Japan 48, 1841 (1980)CrossRefADSGoogle Scholar
  4. 4.
    Yu.E. Lozovik, V.I. Yudsln: Pis’ma Zh. Eksp. and Telr. Fiz. 22, 26 (1975). translation: Sov. Phys. JETP Lett. 22, 11 (1975).Google Scholar
  5. 5.
    H. Fukuyama: Solid State Commun. 19, 551 (1976)CrossRefADSGoogle Scholar
  6. 6.
    M. Tsukada: J. Phys. Soc. Japan 42, 391 (1977)CrossRefADSGoogle Scholar
  7. 7.
    H. Fukuyama, D. Yoshioka: J. Phys. Soc. Japan 48, 1853 (1980)CrossRefADSGoogle Scholar
  8. 8.
    S. Kawaji, J. Wakabayashi, M. Namiki, K. Kusuda: Surf. Sci. 73, 121 (1978)CrossRefADSGoogle Scholar
  9. 9.
    D.C. Tsui: Solid State Commun. 21, 675 (1977)CrossRefADSGoogle Scholar
  10. 10.
    R.J. Wagner, D.C. Tsui: J. Magn. Magn. Mat. 11, 26 (1979)CrossRefADSGoogle Scholar
  11. 11.
    B.A. Wilson, S.J. Allen, Jr., D.C. Tsui: Phys. Rev. Lett. 44, 479 (1980)CrossRefADSGoogle Scholar
  12. 12.
    H. Fukuyama, P.M. Platzman, P.W. Anderson: Phys. Rev. B19, 5211 (1979)CrossRefADSGoogle Scholar
  13. 13.
    Y. Kuramoto: J. Phys. Soc. Japan 45, 390 (1978)CrossRefADSMathSciNetGoogle Scholar
  14. 14.
    A. Kawabata: Solid State Commun. 28, 547 (1978)CrossRefADSGoogle Scholar
  15. 15.
    D. Yoshioka, H. Fukuyama: J. Phys. Soc. Japan 47, 394 (1979)CrossRefADSGoogle Scholar
  16. 17.
    L.J. Sham, M. Nakayama: Phys. Rev. B20, 734 (1979)CrossRefADSGoogle Scholar
  17. 18.
    F.J. Ohkawa, Y. Uemura: J. Phys. Soc. Japan 43, 925 (1977)CrossRefADSGoogle Scholar
  18. 19.
    W.L. Bloss, L.J. Sham, B. Vinter: Phys. Rev. Lett. 43, 1529 (1979)CrossRefADSGoogle Scholar
  19. 20.
    D. Yoshioka, H. Fukuyama: to be submitted to J. Phys. Soc. Japan.Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1981

Authors and Affiliations

  • D. Yoshioka
    • 1
  • H. Fukuyama
    • 1
  1. 1.The Institute for Solid State PhysicsThe University of Tokyo RoppongiMinato-ku Tokyo 106Japan

Personalised recommendations