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

Toru Sakai; Hiroki Nakano

doi:10.1016/j.physb.2017.08.058

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

Strongly Correlated Electrons 2018-05-23 v1 Statistical Mechanics

Authors: 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.

Keywords

kagome lattice triangular lattice heisenberg antiferromagnet spin excitation gapless exact diagonalization finite-size scaling

Cite

@article{arxiv.1801.04458,
  title  = {Gapless Spin Excitations in the $S=1/2$ Kagome- and Triangular-Lattice Heisenberg Antiferromagnets},
  author = {Toru Sakai and Hiroki Nakano},
  journal= {arXiv preprint arXiv:1801.04458},
  year   = {2018}
}