Bulletin of the American Physical Society
APS March Meeting 2024
Monday–Friday, March 4–8, 2024; Minneapolis & Virtual
Session A08: Phases and Phase Transitions in Heavy Fermion Materials
8:00 AM–11:00 AM,
Monday, March 4, 2024
Room: L100I
Sponsoring
Unit:
DCMP
Chair: Sarah Grefe, California State University Long Beach
Abstract: A08.00002 : Quantum Entanglement Characterization of Kondo-destruction Quantum Critical Points*
8:12 AM–8:24 AM
Presenter:
Mounica Mahankali
(Rice University)
Authors:
Mounica Mahankali
(Rice University)
Yuan Fang
(Rice University)
Lei Chen
(Rice University)
Yiming Wang
(Rice University)
Haoyu Hu
(Donostia International Physics Center)
Qimiao Si
(Rice University)
Kondo-destruction Quantum Critical Point (QCP) separates the Kondo and RKKY
dominated phases. The suppression of the Kondo effect is signified by a jump from “large”
to “small” Fermi surface across the QCP [1,2]. While the static amplitude for the Kondo
singlet vanishes on this side of the QCP, there are non-zero Kondo correlations usually
called dynamical Kondo effect[3,4]. Entanglement is one way to probe the local moment
dynamics in these strongly-correlated systems[5,6]. We consider Kondo destruction QCP
of both the Bose-Fermi Kondo model and the Kondo lattice, and calculate entanglement
entropy and mutual information to characterize the competition of the RKKY, Kondo
interactions across the QCP and the dynamical Kondo effect.
[1] H. Hu et al., arXiv:2210.14183. Q. Si et al., Nature 413, 804–808 (2001).
[2] S. Paschen and Q. Si, Nat. Phys. Rev. 3, 9 (2021). S. Kirchner et al., Rev. Mod. Phys.
92, 011002 (2020).
[3] A. Cai et al., Phys. Rev. Lett. 124, 027205 (2020).
[4] L. Prochaska et al. Science 367, 285 (2020).
[5] H. Hu et al., arXiv:2004.04679 (2020).
[6] M. Mahankali et al., in preparation.
*Work supported by the NSF (DMR-2220603) and AFOSR (FA9550-21-1-0356).
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700