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DOE OSTI Β· 2588794

Interplay between aging and rejuvenation in spin glasses

Freedberg, J. [Univ. of Minnesota, Minneapolis, MN (United States)] (ORCID:0000000254748351)Β·Schlagel, D. L. [Ames Laboratory (AMES), Ames, IA (United States)] (ORCID:0000000207997195)Β·Orbach, R. L. [Univ. of Texas, Austin, TX (United States)] (ORCID:0000000275628033)Β·Dahlberg, E. Dan [Univ. of Minnesota, Minneapolis, MN (United States)] (ORCID:0000000300605088)
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Abstract

Aging in a single-crystal spin glass (Cu 0.92 ⁒Mn 0.08 ) has been measured using ac susceptibility techniques over a temperature range of 0.3–0.8𝑇 𝑔 . In these studies, traditional aging experiments (or β€œquench” aging protocols) are compared to aging curves constructed from finite-cooling-rate curves. By comparing the growth rates of spin glass order between the two types of aging curves, it is determined that quantitative comparisons between protocols that are taken by quenching and protocols using a finite cooling rate are not possible without a deeper understanding of the interplay between aging and rejuvenation. Finally, we then demonstrate that the data presented indicate that rejuvenation, rather than cumulative aging, is the cause of the discrepancies between the two growth rates.

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dynamical phase transitionsmagnetic susceptibilitymagnetismmesoscopicsspin glasses

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BibTeXRIS

Freedberg, J. [Univ. of Minnesota, Minneapolis, MN (United States)] (ORCID:0000000254748351), Schlagel, D. L. [Ames Laboratory (AMES), Ames, IA (United States)] (ORCID:0000000207997195), Orbach, R. L. [Univ. of Texas, Austin, TX (United States)] (ORCID:0000000275628033), Dahlberg, E. Dan [Univ. of Minnesota, Minneapolis, MN (United States)] (ORCID:0000000300605088). 2025-08-04. Interplay between aging and rejuvenation in spin glasses. https://doi.org/10.1103/1ch9-54rz

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Sharp Page transitions in generic Hamiltonian dynamics

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dynamical phase transitions↗