PIRSA:15070063 Conference Condensed Matter Quantum Gravity Quantum Information

DOI10.48660/15070063

Conference/School: Recent Progress on High Tc Superconductivity and Related Problems

Mei, J. (2015). Fractional spin-wave continuum in spin liquid states on the kagome lattice . Perimeter Institute. https://pirsa.org/15070063

Mei, Jia-Wei. Fractional spin-wave continuum in spin liquid states on the kagome lattice . Perimeter Institute, Jul. 10, 2015, https://pirsa.org/15070063 

@misc{ pirsa_PIRSA:15070063,
  doi = {10.48660/15070063},
  url = {https://pirsa.org/15070063},
  author = {Mei, Jia-Wei},
  keywords = {Condensed Matter, Quantum Gravity, Quantum Information},
  language = {en},
  title = {Fractional spin-wave continuum in spin liquid states on the kagome lattice   },
  publisher = {Perimeter Institute},
  year = {2015},
  month = {jul},
  note = {PIRSA:15070063 see, \url{https://pirsa.org}}
}

Abstract

Motivated by spin-wave continuum (SWC) observed in recent neutron scattering experiments in Herbertsmithite, we use Gutzwiller-projected wave functions to study dynamic spin structure factor of spin liquid states on the kagome lattice. As their ground state, spin-1 excited states for spin liquids are represented by Gutzwiller-projected two-spinon excited wave functions. We investigate three different spin liquid candidates, spinon Fermi-surface spin liquid (FSL), Dirac spin liquid (DSL) and random-flux spin liquid (RSL). We find that DSL has no explicit contradiction with experiments. Besides a fractionalized spin moment, DSL has a fractionalized crystal momentum which is also detectable directly in the neutron scattering measurements.

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