Fermionic Heisenberg glasses with BCS pairing interaction

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:226

Article; Proceedings Paper

Magalhaes, SG ; Schmidt, AA

关键词: Heisenberg spin glass;   

DOI  :  10.1016/S0304-8853(00)00656-9

来源: Elsevier

【 摘 要 】

We have analyzed a fermionic infinite-ranged quantum Heisenberg spin glass with BCS coupling in real space in the presence of a magnetic field. It has been possible to locate the transition line between the normal-paramagnetic phase and the phase where there is a long-range order corresponding to pair formation in sites. The nature of the transition line is also investigated. This transition ends at T-f, the transition temperature between NP and spin glass phase where the static approximation and replica symmetry ansatz are reliable. (C) 2001 Elsevier Science B.V. All rights reserved.

【 授权许可】

Free