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arXiv · 1408.0606

Quantum spin-liquid behavior in the spin-1/2 random-bond Heisenberg antiferromagnet on the kagome lattice

Hikaru Kawamura·Ken Watanabe·Tokuro Shimokawa
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Abstract

The effect of the quenched bond-randomness on the ordering of the $S=1/2$ antiferromagnetic Heisenberg model on the kagome lattice is investigated by means of an exact-diagonalization method. When the randomness exceeds a critical value, the ground state of the model exhibits a transition within the non-magnetic state into the randomness-relevant gapless spin-liquid state. Implications to the S=1/2 kagome-lattice antiferromagnet herbertsmithite is discussed.

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Hikaru Kawamura, Ken Watanabe, Tokuro Shimokawa. 2014-08-04. Quantum spin-liquid behavior in the spin-1/2 random-bond Heisenberg antiferromagnet on the kagome lattice. https://doi.org/10.7566/jpsj.83.103704

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