Asymmetric melting of a one-third plateau in kagome quantum antiferromagnets

  title={Asymmetric melting of a one-third plateau in kagome quantum antiferromagnets},
  author={Takahiro Misawa and Yuichi Motoyama and Youhei Yamaji},
  journal={Physical Review B},
Asymmetric destruction of the one-third magnetization plateau upon heating is found in the spin-$\frac{1}{2}$ kagome Heisenberg antiferromagnets by using the typical pure quantum state approach. The asymmetry originates from a density of states of low-lying excited states of ${N}_{\mathrm{s}}$ spin systems with magnetization $(1/3\ensuremath{-}2/{N}_{\mathrm{s}})$ that is larger than the density of states of low-lying states with magnetization $(1/3+2/{N}_{\mathrm{s}})$. The enhanced specific… 

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