Phonon Hall viscosity from phonon-spinon interactions

  title={Phonon Hall viscosity from phonon-spinon interactions},
  author={Yunchao Zhang and Yanting Teng and Rhine Samajdar and Subir Sachdev and Mathias S. Scheurer},
  journal={Physical Review B},
Motivated by experimental observations, Samajdar et al. [Nature Physics 15, 1290 (2019)] have proposed that the insulating Néel state in the parent compounds of the cuprates is proximate to a quantum phase transition to a state in which Néel order coexists with semion topological order. We study the manner in which proximity to this transition can make the phonons chiral, by inducing a significant phonon Hall viscosity. We describe the spinon-phonon coupling in a lattice spinon model coupled to… 

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