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arXiv · 1801.04458

Gapless Spin Excitations in the $S=1/2$ Kagome- and Triangular-Lattice Heisenberg Antiferromagnets

Toru Sakai·Hiroki Nakano
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Abstract

The $S=1/2$ kagome- and triangular-lattice Heisenberg antiferromagnets are investigated using the numerical exact diagonalization and the finite-size scaling analysis. The behaviour of the field derivative at zero magnetization is examined for both systems. The present result indicates that the spin excitation is gapless for each system.

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Toru Sakai, Hiroki Nakano. 2018-01-13. Gapless Spin Excitations in the $S=1/2$ Kagome- and Triangular-Lattice Heisenberg Antiferromagnets. https://doi.org/10.1016/j.physb.2017.08.058

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