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Aging in a single crystal spin glass ($\mathrm{Cu}_{0.92}\mathrm{Mn}_{0.08}$) has been measured using ac susceptibility techniques over a temperature range of $0.3 - 0.8 \, T_g$. In these studies, traditional aging experiments (or ``quench'' aging pr
Externí odkaz:
http://arxiv.org/abs/2406.07628
Autor:
Janus Collaboration, Paga, I., He, J., Baity-Jesi, M., Calore, E., Cruz, A., Fernandez, L. A., Gil-Narvion, J. M., Pemartin, I. Gonzalez-Adalid, Gordillo-Guerrero, A., Iñiguez, D., Maiorano, A., Marinari, E., Martin-Mayor, V., Moreno-Gordo, J., Sudupe, A. Muñoz, Navarro, D., Orbach, R. L., Parisi, G., Perez-Gaviro, S., Ricci-Tersenghi, F., Ruiz-Lorenzo, J. J., Schifano, S. F., Schlagel, D. L., Seoane, B., Tarancon, A., Yllanes, D.
Rejuvenation and memory, long considered the distinguishing features of spin glasses, have recently been proven to result from the growth of multiple length scales. This insight, enabled by simulations on the Janus~II supercomputer, has opened the do
Externí odkaz:
http://arxiv.org/abs/2307.02224
Publikováno v:
Phys. Rev. B 110, L060411: Vol. 110, Iss. 6, 1 August 2024
The memory effect in a single crystal spin glass ($\mathrm{Cu}_{0.92}\mathrm{Mn}_{0.08}$) has been measured using \freq ac susceptibility techniques over a temperature range of $0.4 - 0.7 \, T_g$ and a model of the memory effect has been developed. A
Externí odkaz:
http://arxiv.org/abs/2305.17296
Autor:
Paga, I., Zhai, Q., Baity-Jesi, M., Calore, E., Cruz, A., Cummings, C., Fernandez, L. A., Gil-Narvion, J. M., Pemartin, I. Gonzalez-Adalid, Gordillo-Guerrero, A., Iñiguez, D., Kenning, G. G., Maiorano, A., Marinari, E., Martin-Mayor, V., Moreno-Gordo, J., Muñoz-Sudupe, A., Navarro, D., Orbach, R. L., Parisi, G., Perez-Gaviro, S., Ricci-Tersenghi, F., Ruiz-Lorenzo, J. J., Schifano, S. F., Schlagel, D. L., Seoane, B., Tarancon, A., Yllanes, D.
Publikováno v:
Phys. Rev. B 107, 214436- Published 23 June 2023
The extended principle of superposition has been a touchstone of spin glass dynamics for almost thirty years. The Uppsala group has demonstrated its validity for the metallic spin glass, CuMn, for magnetic fields $H$ up to 10 Oe at the reduced temper
Externí odkaz:
http://arxiv.org/abs/2207.10640
Autor:
Paga, I., Zhai, Q., Baity-Jesi, M., Calore, E., Cruz, A., Fernandez, L. A., Gil-Narvion, J. M., Pemartin, I. Gonzalez-Adalid, Gordillo-Guerrero, A, Iñiguez, D., Maiorano, A., Marinari, E., Martin-Mayor, V., Moreno-Gordo, J., Muñoz-Sudupe, A., Navarro, D., Orbach, R. L., Parisi, G., Perez-Gaviro, S., Ricci-Tersenghi, F., Ruiz-Lorenzo, J. J., Schifano, S. F., Schlagel, D. L., Seoane, B., Tarancon, A., Tripiccione, R., Yllanes, D.
Publikováno v:
J. Stat. Mech. (2021) 033301
The synergy between experiment, theory, and simulations enables a microscopic analysis of spin-glass dynamics in a magnetic field in the vicinity of and below the spin-glass transition temperature $T_\mathrm{g}$. The spin-glass correlation length, $\
Externí odkaz:
http://arxiv.org/abs/2101.00821
Autor:
Zhai, Q., Paga, I., Baity-Jesi, M., Calore, E., Cruz, A., Fernandez, L. A., Gil-Narvion, J. M., Pemartin, I. Gonzalez-Adalid, Gordillo-Guerrero, A., Iñiguez, D., Maiorano, A., Marinari, E., Martin-Mayor, V., Moreno-Gordo, J., Muñoz-Sudupe, A., Navarro, D., Orbach, R. L., Parisi, G., Perez-Gaviro, S., Ricci-Tersenghi, F., Ruiz-Lorenzo, J. J., Schifano, S. F., Schlagel, D. L., Seoane, B., Tarancon, A., Tripiccione, R., Yllanes, D.
Publikováno v:
Phys. Rev. Lett. 125, 237202 (2020)
The correlation length $\xi$, a key quantity in glassy dynamics, can now be precisely measured for spin glasses both in experiments and in simulations. However, known analysis methods lead to discrepancies either for large external fields or close to
Externí odkaz:
http://arxiv.org/abs/2007.03871
Publikováno v:
Phys. Rev. B 100, 094202 (2019)
The growth of the spin-glass correlation length has been measured as a function of the waiting time $t_{\mathrm{w}}$ on a single crystal of CuMn (6 at.\%), reaching values $\xi\sim 150$ nm, larger than any other glassy correlation-length measured to
Externí odkaz:
http://arxiv.org/abs/2002.07478
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Akademický článek
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It is currently believed that the decay of the thermoremanent magnetization in spin glasses is composed of two terms; The "stationary" term which does not depend on the sample history and dominates the short time decay ($<1s$) and a long time aging t
Externí odkaz:
http://arxiv.org/abs/cond-mat/0402509