Memory and rejuvenation effects in spin glasses are governed by more than one length scale

Baity-Jesi, M. ; Calore, E. ; Cruz, A. (Universidad de Zaragoza) ; Fernández, L. A. ; Gil-Narvión, J. M. ; González-Adalid Pemartín, I. ; Gordillo-Guerrero, A. ; Iñiguez, D. ; Maiorano, A. ; Marinari, E. ; Martín-Mayor, V. ; Moreno-Gordo, J. ; Muñoz Sudupe, A. ; Navarro, D. (Universidad de Zaragoza) ; Paga, I. ; Parisi, G. ; Pérez-Gaviro, S. (Universidad de Zaragoza) ; Ricci-Tersenghi, F. ; Ruiz-Lorenzo, J. J. ; Schifano, S. F. ; Seoane, B. ; Tarancón, A. (Universidad de Zaragoza) ; Yllanes, D.

Resumen: Memory and rejuvenation effects in the magnetic response of off-equilibrium spin glasses have been widely regarded as the doorway into the experimental exploration of ultrametricity and temperature chaos. Unfortunately, despite more than twenty years of theoretical efforts following the experimental discovery of memory and rejuvenation, these effects have, thus far, been impossible to reliably simulate. Yet, three recent developments convinced us to accept this challenge: first, the custom-built Janus II supercomputer makes it possible to carry out simulations in which the very same quantities that can be measured in single crystals of CuMn are computed from the simulation, allowing for a parallel analysis of the simulation and experimental data. Second, Janus II simulations have taught us how numerical and experimental length scales should be compared. Third, we have recently understood how temperature chaos materializes in aging dynamics. All these three aspects have proved crucial for reliably reproducing rejuvenation and memory effects on the computer. Our analysis shows that at least three different length scales play a key role in aging dynamics, whereas essentially all the theoretical analyses of the aging dynamics emphasize the presence and crucial role of a single glassy correlation length.

Idioma: Inglés

DOI: 10.1038/s41567-023-02014-6

Año: 2023

Publicado en: Nature Physics 19 (2023), 978-985
ISSN: 1745-2473

Factor impacto JCR: 18.1 (2023)

Categ. JCR: PHYSICS, MULTIDISCIPLINARY rank: 5 / 112 = 0.045 (2023) - Q1 - T1

Factor impacto CITESCORE: 30.4 - Physics and Astronomy (all) (Q1)

Factor impacto SCIMAGO: 8.228 - Physics and Astronomy (miscellaneous) (Q1)

Financiación: info:eu-repo/grantAgreement/ES/AEI/PID2019-103939RB-I00
Financiación: info:eu-repo/grantAgreement/EC/H2020/694925/EU/Low Temperature Glassy Systems/LoTGlasSy
Financiación: info:eu-repo/grantAgreement/ES/MCIU/FPU18/02665
Financiación: info:eu-repo/grantAgreement/ES/MICINN/PGC2018-094684-B-C22
Financiación: info:eu-repo/grantAgreement/ES/MICINN/PID2021-125506NA-I00
Financiación: info:eu-repo/grantAgreement/ES/MINECO-AEI-FEDER/PGC2018-094684-B-C21
Financiación: info:eu-repo/grantAgreement/ES/MINECO-AEI-FEDER/PID2020-112936GB-I00

Tipo y forma: Article (Published version)

Área (Departamento): Área Tecnología Electrónica (Dpto. Ingeniería Electrón.Com.)
Área (Departamento): Área Física Teórica (Dpto. Física Teórica)