Werthamer–Helfand–Hohenberg theory
Encyclopedia
This theory was proposed in 1966
to go beyond BCS theory
of superconductivity
and it provides predictions of upper critical field
(Hc2) in type-II superconductors
.
The theory predicts the upper critical field (Hc2) at 0 K from Tc and the slope of Hc2 at Tc.
eg Referred : re MgB2
to go beyond BCS theory
BCS theory
BCS theory — proposed by Bardeen, Cooper, and Schrieffer in 1957 — is the first microscopic theory of superconductivity since its discovery in 1911. The theory describes superconductivity as a microscopic effect caused by a "condensation" of pairs of electrons into a boson-like state...
of superconductivity
Superconductivity
Superconductivity is a phenomenon of exactly zero electrical resistance occurring in certain materials below a characteristic temperature. It was discovered by Heike Kamerlingh Onnes on April 8, 1911 in Leiden. Like ferromagnetism and atomic spectral lines, superconductivity is a quantum...
and it provides predictions of upper critical field
Upper critical field
-Upper critical field:The upper critical field is the magnetic field which completely suppresses superconductivity in a Type II superconductor at 0K ....
(Hc2) in type-II superconductors
.
The theory predicts the upper critical field (Hc2) at 0 K from Tc and the slope of Hc2 at Tc.
eg Referred : re MgB2
MgB2
MGB2 or MgB2 may refer to:*MgB2, Magnesium diboride a superconductor.* MGB2. a mammaglobin gene....