Advertisement

Czechoslovak Journal of Physics

, Volume 46, Supplement 2, pp 1077–1078 | Cite as

Low field irreversible response in the granular S.C. La1.8Sr0.2CuO4

  • Leonid A. Gurevich
  • Miguel Ocio
  • Mikhail V. Feigel'man
HTSC—Electromagnetic Response, Spin Properties
  • 12 Downloads

Abstract

Low field low frequency a.c. susceptibility measurements show that the response is strongly non linear, the shielding current growingsublinearly with the increase of the applied field, andirreversible down to 50 μG. A new model of diamagnetic response is proposed, based on the idea of a fractal organization of the free energy landscape in the granular network.

Keywords

Fractal Organization Free Energy Landscape Static Irreversibility Small Penetration Diamagnetic Response 
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.

References

  1. [1]
    C. P. Bean, Rev. Mod. Phys. 36 (1964), 31.CrossRefADSGoogle Scholar
  2. [2]
    A. M. Campbell, J. Phys. C2 (1969), 3186.Google Scholar
  3. [3]
    L. Leylekian, M. Ocio, L. A. Gurevich, and M. V. Feigel'man (to be published).Google Scholar
  4. [4]
    M. V. Feigel'man and L. B. Ioffe, Phys. Rev. Lett. 74 (1995), 3447.CrossRefADSGoogle Scholar
  5. [5]
    L. Leylekian, M. Ocio and J. Hammann, Physica B 194–196 (1994), 1865.CrossRefGoogle Scholar
  6. [6]
    V. S. Dotsenko, M. V. Feigel'man and L. B. Ioffe in “Spin Glasses and Related Problems”, Soviet Scientific Review/Section A, Vol. 15, p. 87.Google Scholar

Copyright information

© Institute of Physics, Acad. Sci. CR 1996

Authors and Affiliations

  • Leonid A. Gurevich
    • 1
  • Miguel Ocio
    • 1
  • Mikhail V. Feigel'man
    • 2
  1. 1.Service de Physique de l'Etat condenséCEA SaclayGif sur Yvette CedexFrance
  2. 2.Landau Institute for Theoretical PhysicsMoscowRussia

Personalised recommendations