Open AccessCOEXISTENCE OF SUPERCONDUCTIVITY AND FERROMAGNETISM IN THE TRIPLET BIPOLARONIC SYSTEM
Author(s) -
Li Ym,
Ly Zhang
Publication year - 1987
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.36.157
Subject(s) - ferromagnetism , condensed matter physics , superconductivity , phase diagram , physics , ground state , hartree , phase transition , symmetry (geometry) , phase (matter) , quantum mechanics , mathematics , geometry
The problem of coexistence of superconductivity and ferromagnetism in the triplet bipolaro-nic system has been studied by using the symmetry-broken Hartree approximation. It is found that the ground stare of the system is the mixed state of both orders, which is different from the case of usual BCS systems. It is seen from the phase diagram obtained that in the high bipolaro-nic concentration region the system may exhibit a transition from the ferromagnetic to the mixed state on cooling, while in the low concentration region only the transition from the normal to the mixed state is possible.