Gapless Spin Excitations in the Kagome- and Triangular-Lattice Heisenberg Antiferromagnets
arXiv:1801.04458 · doi:10.1016/j.physb.2017.08.058
Abstract
The 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.
12pages, 4figures, to be pblished in Physica B
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