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The instability point Hs of the Meissner state for large-κ superconductors

  • Yu. N. Ovchinnikov
Solids Electronic Properties

Abstract

The critical field Hs corresponding to the emergence of vortices in a superconductor without a threshold is found near the transition temperature and in the limit as T→0 for an arbitrary value of the depairing factor Γ. In superconductors of the second kind, this field value coincides with the absolute instability point of the Meissner state. In large-κ superconductors, the order parameter tends to zero on the surface of the super-conductor if the external magnetic field reaches the value Hs. We obtain that Hs=Hcm (where Hcm is the thermodynamic critical field) for an arbitrary value of the depairing factor Γin the temperature region near Tc and at T=0.

Keywords

Spectroscopy Magnetic Field Vortex State Physics Transition Temperature 
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References

  1. 1.
    V. L. Ginzburg and L. D. Landau, Zh. Éksp. Teor. Fiz. 20, 1064 (1950).Google Scholar
  2. 2.
    A. A. Abrikosov, Zh. Éksp. Teor. Fiz. 32, 1442 (1957) [Sov. Phys. JETP 5, 1174 (1957)].Google Scholar
  3. 3.
    P. G. de Gennes, Superconductivity of Metals and Alloys (Benjamin, New York, 1966; Mir, Moscow, 1968).Google Scholar
  4. 4.
    V. L. Ginzburg, Zh. Éksp. Teor. Fiz. 34, 113 (1958) [Sov. Phys. JETP 7, 78 (1958)].zbMATHGoogle Scholar
  5. 5.
    L. P. Gor’kov, Zh. Éksp. Teor. Fiz. 36, 1918 (1959) [Sov. Phys. JETP 9, 1364 (1959)].Google Scholar
  6. 6.
    L. G. Aslamazov, A. I. Larkin, and Yu. N. Ovchinnikov, Zh. Éksp. Teor. Fiz. 55, 323 (1968) [Sov. Phys. JETP 28, 171 (1968)].Google Scholar
  7. 7.
    Yu. N. Ovchinnikov and V. Z. Kresin, Eur. Phys. J. B 14, 203 (2000).CrossRefADSGoogle Scholar
  8. 8.
    Yu. N. Ovchinnikov and I. M. Sigal, Physica A (Amsterdam) 261, 143 (1998); Eur. J. Appl. Math. (2000) (in press).Google Scholar
  9. 9.
    A. I. Larkin and Yu. N. Ovchinnikov, Zh. Éksp. Teor. Fiz. 64, 1096 (1973) [Sov. Phys. JETP 37, 557 (1973)].Google Scholar
  10. 10.
    A. A. Abrikosov, L. P. Gor’kov, and I. E. Dzyaloshinskii, Methods of Quantum Field Theory in Statistical Physics (Fizmatgiz, Moscow, 1962; Prentice-Hall, Englewood Cliffs, 1963).Google Scholar

Copyright information

© MAIK "Nauka/Interperiodica" 2001

Authors and Affiliations

  • Yu. N. Ovchinnikov
    • 1
    • 2
  1. 1.Centre de Recherches sur les Tres Basses Temperatures, associe a l’UIFCNRSGrenoble-Cedex 9France
  2. 2.Landau Institute for Theoretical PhysicsRussian Academy of SciencesMoscowRussia

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