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Spinons in a Crossed-Chains Model of a 2D Spin Liquid

Oleg A. Starykh·Rajiv R. P. Singh·Gregory C. Levine
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Abstract

Using Random Phase Approximation, we show that a crossed-chains model of a spin-1/2 Heisenberg spins, with frustrated interchain couplings, has a non-dimerized spin-liquid ground state in 2D, with deconfined spinons as the elementary excitations. The results are confirmed by a bosonization study, which shows that the system is an example of a `sliding Luttinger liquid'. In an external field, the system develops an incommensurate field-induced long range order with a finite transition temperature.

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Oleg A. Starykh, Rajiv R. P. Singh, Gregory C. Levine. 2002-02-21. Spinons in a Crossed-Chains Model of a 2D Spin Liquid. https://doi.org/10.1103/physrevlett.88.167203

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