Magnetization plateaux in a generalized ladder model

Emily Chattopadhyay and Indrani Bose

Physica A: Statistical Mechanics and its Applications, 2003, vol. 318, issue 1, 14-22

Abstract: A spin-12 antiferromagnetic generalized ladder model is constructed which consists of four-spin plaquettes, coupled through weaker exchange interactions, to two-spin rungs. In an extended parameter regime, the exact ground state of the ladder is determined. In this state, the four-spin plaquettes and the rungs are in their ground-state spin configurations. In the presence of an external magnetic field, the magnetization/site has a plateau structure as a function of the magnetic field.

Keywords: Magnetization plateaux; Spin ladder; RVB state (search for similar items in EconPapers)
Date: 2003
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:318:y:2003:i:1:p:14-22

DOI: 10.1016/S0378-4371(02)01396-1

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