Bulletin of the American Physical Society
APS March Meeting 2021
Volume 66, Number 1
Monday–Friday, March 15–19, 2021; Virtual; Time Zone: Central Daylight Time, USA
Session A39: Kitaev Systems I
8:00 AM–11:00 AM,
Monday, March 15, 2021
Sponsoring
Units:
GMAG DMP
Chair: Philipp Gegenwart, Augsburg University
Abstract: A39.00011 : Phonon dynamics of Kitaev spin liquid at finite temperatures
10:24 AM–10:36 AM
Live
Presenter:
Kexin Feng
(University of Minnesota)
Authors:
Kexin Feng
(University of Minnesota)
Mengxing Ye
(Kavli Institute for Theoretical Physics, UCSB)
Natalia Perkins
(University of Minnesota)
devoted to the study of spin dynamics in Kitaev materials through various dynamical probes. Here we propose to study the signatures of the fractionalized excitations in Kitaev materials by exploiting their coupling to lattice vibrations [2]. In particular, we argue that the signatures of fractionalization can be seen in the sound attenuation and the Hall viscosity of acoustic phonons when time-reversal symmetry is broken, e.g., in applied magnetic field. Our analysis based on analytical calculations and Monte Carlo simulations at finite temperature shows that these observables have pronounced temperature dependence reflecting thermal fluctuations of fluxes and their effect on the itinerant Majorana fermions.
[1] A. Kitaev, Annals of Physics 321, 2 (2006).
[2] M.Ye, R. M. Fernandes and N. B. Perkins, Phys. Rev. Research 2, 033180 (2020)
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