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A Unified Total Energy Approach to High‐Temperature Superconductivity and Long‐Range Ordering in Solids
Author(s) -
Mizia J.,
Romanowski S. J.
Publication year - 1994
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.2221860119
Subject(s) - superconductivity , condensed matter physics , antiferromagnetism , range (aeronautics) , conductivity , fermi level , fermi energy , physics , energy (signal processing) , electron , materials science , quantum mechanics , composite material
A novel approach to the long‐range ordering in solids is proposed in which the total energy is minimized with respect to the long‐range ordering parameter. It is shown that the method, on the one hand, reproduces the classic BCS results for superconductivity, whilst also agreeing with the well established results for the itinerant antiferromagnetism. Implications of the method for electronically driven super‐ conductivity are discussed. It is found that the electron transfer around the Fermi energy promotes super‐ conductivity. This transfer is easier in the soft multi‐orbital systems than in the single‐band system.