Werthamer–Helfand–Hohenberg theory

This theory was proposed in 1966 [1] to go beyond BCS theory of superconductivity and it provides predictions of upper critical field (Hc2) in type-II superconductors [2] .[3] The theory predicts the upper critical field (Hc2) at 0 K from Tc and the slope of Hc2 at Tc.

eg Referred : re MgB2 [4]

References

  1. ↑ N. R. Werthamer, E. Helfand, P. C. Hohenberg: Phys. Rev. 147 (1966) 295
  2. ↑ Temperature and Purity Dependence of the Superconducting Critical Field, Hc2. III. Electron Spin and Spin-Orbit Effects
  3. ↑ Upper critical field in Ba1 - xKxBiO3: Magnetotransport vs. magnetotunneling
  4. ↑ http://arxiv.org/abs/cond-mat/0102216 Strongly linked current flow in polycrystalline forms of the new superconductor MgB2


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