Bulletin of the American Physical Society
APS March Meeting 2023
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session N30: Strongly Correlated Systems, Including Quantum Fluids and Solids XII
11:30 AM–2:06 PM,
Wednesday, March 8, 2023
Room: Room 222/223
Sponsoring
Unit:
DCMP
Chair: Brenden Ortiz, University of California, Santa Barbara
Abstract: N30.00001 : Magnetic field and frustration induced quantum spin liquid in a J1-J3 honeycomb XY model
11:30 AM–11:42 AM
Presenter:
Anjishnu Bose
(Univ of Toronto)
Authors:
Anjishnu Bose
(Univ of Toronto)
Sreekar Voleti
(Univ of Toronto)
Arun Paramekanti
(Univ of Toronto)
Recent experimental studies have shown that applying a magnetic field to honeycomb cobaltates leads to suppression of magnetic order, resulting in a broad continuum observed in THz spectroscopy. Motivated by these observations, we construct a parton mean-field theory model for the J1-J3 XY spin model on the honeycomb lattice in the presence of anisotropies. We employ several numerical techniques to find the ground state and study its properties in the presence of an external Zeeman field. Tuning a phenomenological parameter which enhances the effect of quantum fluctuations relative to ordering tendencies, we find the existence of an intermediate Dirac QSL with spin-rotation symmetry breaking. We analyze the dynamic spin-structure factor in this QSL phase, in the absence and presence of a magnetic field, and compare it to experimental data.
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