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On the schrödinger spin‐exchange ferromagnet
Author(s) -
Brown H. A.
Publication year - 1983
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.2221170118
Subject(s) - ferromagnetism , condensed matter physics , magnetization , coupling constant , phase transition , entropy (arrow of time) , operator (biology) , physics , exchange interaction , heat capacity , schrödinger's cat , quantum mechanics , chemistry , magnetic field , biochemistry , repressor , transcription factor , gene
The thermodynamic behavior of a ferromagnet whose interactions are described by the Schrödinger spin‐exchange operator is investigated. The transition temperatures, magnetization, susceptibility, exchange energy, heat capacity, and entropy are calculated for general spin and lattice coordination number using the constant‐coupling approximation. Both first‐ and second‐order phase transitions are found. Comparison with some results of the high‐temperature expansion method shows some qualitative agreement.