Phys. Rev. Lett. 67, 2371–2374 (1991)Limitations of the London model for the reversible magnetization of type-II superconductorsReceived 15 February 1991; published in the issue dated 21 October 1991 We point out that the London model for the reversible magnetization M of high-κ type-II superconductors in the intermediate-field region is quantitatively incorrect, and we discuss the implications on our understanding of the mixed state of type-II superconductors. We also show that the apparently linear dependence of M vs lnH in the intermediate-field region, a behavior that has been observed experimentally, can be obtained from a previously proposed variational model. © 1991 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.67.2371
DOI:
10.1103/PhysRevLett.67.2371
PACS:
74.20.De, 74.30.Ci, 74.60.Ec, 74.70.Vy
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