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The Condensation and Ferromagnetism of Triplet Frenkel Excitons
Author(s) -
Li BaoXing
Publication year - 1991
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.2221680210
Subject(s) - ferromagnetism , condensation , condensed matter physics , phase diagram , exciton , triplet state , phase (matter) , symmetry (geometry) , ground state , hartree , physics , materials science , thermodynamics , quantum mechanics , mathematics , excited state , geometry
The problem of coexistence of condensation and ferromagnetism in the triplet excitonic system is studied by using the symmetry‐broken Hartree approximation. It is found that the ground state of the system is the mixed state of both orders. Two kinds of particular cases, pure condensing phase and pure ferromagnetic phase, are discussed. A phase diagram is obtained from the calculation of free energies.