Freezing of a disorder induced quantum spin liquid

Xiao Hu; Daniel M. Pajerowski; Depei Zhang; Andrey A. Podlesnyak; Yiming Qiu; Qing Huang; Haidong Zhou; Israel Klich; Alexander I. Kolesnikov; Matthew B. Stone; Seung-Hun Lee

doi:10.1103/PhysRevLett.127.017201

Freezing of a disorder induced quantum spin liquid

Materials Science 2021-07-07 v1

Authors: Xiao Hu , Daniel M. Pajerowski , Depei Zhang , Andrey A. Podlesnyak , Yiming Qiu , Qing Huang , Haidong Zhou , Israel Klich , Alexander I. Kolesnikov , Matthew B. Stone , Seung-Hun Lee

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Abstract

$\rm{Sr_2CuTe_{0.5}W_{0.5}O_6}$ is a square-lattice magnet with super-exchange between S=1/2 $\rm{Cu^{2+}}$ spins mediated by randomly distributed Te and W ions. Here, using sub-K temperature and 20 $\rm{\mu}$ eV energy resolution neutron scattering experiments we show that this system transits from a gapless disorder-induced quantum spin liquid to a new quantum state below $\rm{T_f}$ = 1.7(1) K, exhibiting a weak frozen moment of <S>/S ~ 0.1 and low energy dynamic susceptibility, ${\chi}''({\hbar\omega})$ linear in energy which is surprising for such a weak freezing in this highly fluctuating quantum regime.

Keywords

quantum spin liquid disorder-induced neutron scattering square-lattice magnet freezing transition dynamic susceptibility sr2cute0.5w0.5o6

Cite

@article{arxiv.2102.06309,
  title  = {Freezing of a disorder induced quantum spin liquid},
  author = {Xiao Hu and Daniel M. Pajerowski and Depei Zhang and Andrey A. Podlesnyak and Yiming Qiu and Qing Huang and Haidong Zhou and Israel Klich and Alexander I. Kolesnikov and Matthew B. Stone and Seung-Hun Lee},
  journal= {arXiv preprint arXiv:2102.06309},
  year   = {2021}
}

Freezing of a disorder induced quantum spin liquid

Abstract

Keywords

Cite

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