Bulletin of the American Physical Society
APS March Meeting 2020
Volume 65, Number 1
Monday–Friday, March 2–6, 2020; Denver, Colorado
Session W40: Disordered Systems
8:00 AM–11:00 AM,
Friday, March 6, 2020
Room: 705
Sponsoring
Unit:
GMAG
Chair: Tao Qu, University of Minnesota
Abstract: W40.00006 : Slowing down of spin glass correlation length growth: simulations meet experiments*
Presenter:
Raymond Orbach
(University of Texas at Austin)
Authors:
Raymond Orbach
(University of Texas at Austin)
Qiang Zhai
(University of Texas at Austin)
Victor Martin-Mayor
(Fisica Teiruca, Universidad Complutense)
Deborah Schlagel
(Division of Materials Science and Engineering, Ames Laboratory)
ξ = 152 nm. The measurements were performed at T/Tc = 0.89 and for times 2 × 103 ≤ tw ≤ 8 × 104 s. The value of the crossover variable, x(tw,T) = lJ(T)/ξ(tw,T), where lJ(T) is the Josephson length, is sufficiently small (0.091 ≤ x ≤ 0.12) that the experimental results are free from critical effects. The measured aging rate (zc = 12.37 ± 1.07) was compared with simulation results from the Janus Collaboration. An extrapolation of the Janus results yields zc(115 nm) = 11.94 ± 0.08 and zc(152 nm) = 12.76 ± 0.08. This relationship between simulations and experiments allows exploration of phenomena, especially in complex systems, with the particular insights of each partner fueling the interpretation and development of the other. [Phys. Rev. B 100, 094202 (2019)]
*This work was supported by the U.S. Department of Energy, Award No. DE-SC0013599, and Contract No. DE-AC02-07CH11358; and MINECO; Spain, Grants No. FIS2015-65078-C2 and No. PGC2018-094684-B-C21, partially funded by FEDER.
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