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


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.


Fractal Organization Free Energy Landscape Static Irreversibility Small Penetration Diamagnetic Response 
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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

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