Jammed Spin Liquid in the Bond-Disordered Kagome Antiferromagnet

Jammed Spin Liquid in the Bond-Disordered Kagome Antiferromagnet

We study a class of continuous spin models with bond disorder including the kagome Heisenberg antiferromagnet. For weak disorder strength, we find discrete ground states whose number grows exponentially with system size. These states do not exhibit zero-energy excitations characteristic of highly fr...

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Veröffentlicht in:Physical review letters 2017-12, Vol.119 (24), p.247201-247201, Article 247201
Hauptverfasser: Bilitewski, Thomas, Zhitomirsky, Mike E, Moessner, Roderich
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Sprache:eng
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Condensed Matter
Physics
Strongly Correlated Electrons
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Zhitomirsky, Mike E
Moessner, Roderich
description We study a class of continuous spin models with bond disorder including the kagome Heisenberg antiferromagnet. For weak disorder strength, we find discrete ground states whose number grows exponentially with system size. These states do not exhibit zero-energy excitations characteristic of highly frustrated magnets but instead are local minima of the energy landscape. This represents a spin liquid version of the phenomenon of jamming familiar from granular media and structural glasses. Correlations of this jammed spin liquid, which upon increasing the disorder strength gives way to a conventional spin glass, may be algebraic (Coulomb type) or exponential.
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Strongly Correlated Electrons
title Jammed Spin Liquid in the Bond-Disordered Kagome Antiferromagnet
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