Fractional spin-wave continuum in spin liquid states on the kagome lattice
APA
Mei, J. (2015). Fractional spin-wave continuum in spin liquid states on the kagome lattice . Perimeter Institute. https://pirsa.org/15070063
MLA
Mei, Jia-Wei. Fractional spin-wave continuum in spin liquid states on the kagome lattice . Perimeter Institute, Jul. 10, 2015, https://pirsa.org/15070063
BibTex
@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}} }
Southern University of Science and Technology (SUSTech)
Talk Type
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.