RUS  ENG
Full version
JOURNALS // Teoreticheskaya i Matematicheskaya Fizika // Archive

TMF, 1994 Volume 101, Number 2, Pages 294–303 (Mi tmf1686)

Method of anomalous Green's functions: Antiferromagnetism in the Hubbard model on a triangular lattice

K. N. Il'inskii, V. N. Popov

St. Petersburg Department of V. A. Steklov Institute of Mathematics, Russian Academy of Sciences

Abstract: A method is proposed for describing antiferromagnetic and ferromagnetic states on a triangular lattice in the formalism of anomalous temperature-dependent Green's functions, for which equations of Dyson–Gor'kov type are formulated. These equations are solved in the Hartree approximation, and self-consistency equations are obtained for the order parameters. Finally, the connection between the considered theory and experiment is discussed.

Received: 12.11.1993


 English version:
Theoretical and Mathematical Physics, 1994, 101:2, 1361–1367

Bibliographic databases:


© Steklov Math. Inst. of RAS, 2025