Bulletin of the American Physical Society
2023 APS March Meeting
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session K33: Many-Body Localization
3:00 PM–5:48 PM,
Tuesday, March 7, 2023
Room: Room 225
Sponsoring
Unit:
DCMP
Chair: Lingyuan Gao, University of Arkansas
Abstract: K33.00008 : Stark many-body localization in spin chains with single-ion anisotropy*
4:24 PM–4:36 PM
Presenter:
Edson Vernek
(Federal University of Uberlândia)
Authors:
Edson Vernek
(Federal University of Uberlândia)
Márcio G Sousa
(Federal University of Uberlândia)
Rafael F Costa
(Federal University of Uberlândia)
We have studied SMBL in a spin 1/2 Heisenberg chain with first and second nearest-neighbor couplings J1 and J2 [2]. We have shown that SMBL is very robust by inclusion of J2. More interestingly, there are windows in the parameter space J1-J2 within which SMBL is actually enhanced. We also study SBML in a spin 3/2 Heisenberg model in the presence of single ion anisotropy. Our results for imbalance and entanglement entropy reveal a rich diagram over the J1-J2 parameter space, in which localization is obtained even in the absence of gradient potentials.
[1] M. Schulz, C. A. Hooley, R. Moessner, and F. Pollmann, Phys. Rev. Lett. 122, 040606 (2019).
[2] E. Vernek, Phys. Rev. B 105, 075124 (2022).
*This works is supported by CNPq, CAPES and FAPEMIG.
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