Premium
The Magnetic Field Distribution of Superconducting Alloys with Small Magnetization
Author(s) -
Brandt E. H.
Publication year - 1974
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220650205
Subject(s) - paramagnetism , impurity , magnetization , condensed matter physics , superconductivity , saddle point , saddle , magnetic field , materials science , field (mathematics) , physics , quantum mechanics , mathematics , mathematical optimization , geometry , pure mathematics
The magnetic field distribution of type‐II superconductors with arbitrary concentration of non‐paramagnetic and paramagnetic impurities is calculated near H c2 for 0 ≦ T < T c . At a certain temperature T , depending on the impurity concentration, minimum and saddle point of H interchange their positions. At very low T , the reduced magnetization |4π M | B/N 〈|Δ| 2 〉 reaches a maximum at a certain impurity concentration, but even a small concentration of paramagnetic impurities inhibits this effect. The new H leads to a correction of the χ 2 ‐theory.