A review of theoretical and experimental evidence that Kitaev magnets exhibit thermal fractionalization into Majorana fermions and Z2 fluxes, with the half-quantized thermal Hall effect as the strongest proposed signature.
Majorana-Magnon Crossover by a Magnetic Field in the Kitaev Model: Continuous-Time Quantum Monte Carlo Study
1 Pith paper cite this work. Polarity classification is still indexing.
1
Pith paper citing it
abstract
Kitaev quantum spin liquids host Majorana fermions via the fractionalization of spins. In a magnetic field, the Majorana fermions were predicted to comprise a topological state, which has attracted great attention by the discovery of the half-quantized thermal Hall conductivity. Nevertheless, a reliable theory remains elusive for the field effect, especially at finite temperature. Here we present unbiased large-scale numerical results for the Kitaev model in a wide range of magnetic field and temperature. We find that the unconventional paramagnetic region showing fractional spin dynamics extends at finite temperature, far beyond the field range where the topological state is expected at zero temperature. Our results show the confinement-deconfinement behavior between the fractional Majorana excitations and the conventional magnons.
fields
cond-mat.str-el 1years
2019 1verdicts
CONDITIONAL 1representative citing papers
citing papers explorer
-
Hunting Majorana Fermions in Kitaev Magnets
A review of theoretical and experimental evidence that Kitaev magnets exhibit thermal fractionalization into Majorana fermions and Z2 fluxes, with the half-quantized thermal Hall effect as the strongest proposed signature.