Quantum phases of frustrated two-leg spin-1/2 ladders with skewed rungs

Giri, Geetanjali and Dey, Dayasindhu and Kumar, Manoranjan and Ramasesha, S and Soos, Zoltan G (2017) Quantum phases of frustrated two-leg spin-1/2 ladders with skewed rungs. In: PHYSICAL REVIEW B, 95 (22).

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Abstract

The quantum phases of two-leg spin-1/2 ladders with skewed rungs are obtained using exact diagonalization of systems with up to 26 spins and by density-matrix renormalization-group calculations to 500 spins. The ladders have isotropic antiferromagnetic (AF) exchange J(2) > 0 between first neighbors in the legs, variable isotropic AF exchange J(1) between some first neighbors in different legs, and an unpaired spin per odd-membered ring when J(1) >> J(2). Ladders with skewed rungs and variable J(1) have frustrated AF interactions leading to multiple quantum phases: AF at small J(1), either ferromagnetic or AF at large J(1), as well as bond-order-wave phases or reentrant AF (singlet) phases at intermediate J(1).

Item Type:	Journal Article
Publication:	PHYSICAL REVIEW B
Additional Information:	Copy right for this article belongs to the AMER PHYSICAL SOC, ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	28 Jun 2017 06:26
Last Modified:	28 Jun 2017 06:26
URI:	http://eprints.iisc.ac.in/id/eprint/57273

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