We study weakly coupled antiferromagnetic spin chains in their ordered phase by combining an exact solution of the single-chain problem with a random-phase-approximation analysis of the interchain interaction. A single chain is described by a quantum Sine-Gordon model and dynamical staggered susceptibilities are determined by employing the form-factor approach to quantum correlation functions. We consider both antiferromagnetic order encountered in quasi-one-dimensional materials such as KCuF3 and spin-Peierls order as found in CuGeO3.
Quasi 1-D spin 1/2 Heisenberg magnets in their ordered phase: Correlation functions / Essler, F; Tsvelik, A; Delfino, Gesualdo. - In: PHYSICAL REVIEW. B, CONDENSED MATTER. - ISSN 0163-1829. - 56:17(1997), pp. 11001-11013. [10.1103/PhysRevB.56.11001]
Quasi 1-D spin 1/2 Heisenberg magnets in their ordered phase: Correlation functions
Delfino, Gesualdo
1997-01-01
Abstract
We study weakly coupled antiferromagnetic spin chains in their ordered phase by combining an exact solution of the single-chain problem with a random-phase-approximation analysis of the interchain interaction. A single chain is described by a quantum Sine-Gordon model and dynamical staggered susceptibilities are determined by employing the form-factor approach to quantum correlation functions. We consider both antiferromagnetic order encountered in quasi-one-dimensional materials such as KCuF3 and spin-Peierls order as found in CuGeO3.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
