Evidence for Temperature Chaos in Spin Glasses
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arXiv
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| Auteurs principaux: | , , |
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| Format: | Preprint |
| Publié: |
2020
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| _version_ | 1866910334249336832 |
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| author | Zhai, Qiang Orbach, Raymond L. Schlagel, Deborah |
| author_facet | Zhai, Qiang Orbach, Raymond L. Schlagel, Deborah |
| contents | We study the field cooled magnetization of a CuMn spin glass under temperature perturbations. The $T$-cycling curves are compared with the reference curve without temperature cycling. There is a crossover from the cumulative aging region to noncumulative aging region as the temperature change is increased. The cumulative aging range scales with the chaos length $\ell_\mathrm{c}$, becoming comparable to the correlation length, $ξ$, at the crossover boundary. The extracted chaos exponent, $ζ= 1.1$, is in agreement with theoretical predictions. Our results strongly suggest temperature chaos exists in real spin glasses system. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2010_01214 |
| institution | arXiv |
| publishDate | 2020 |
| record_format | arxiv |
| spellingShingle | Evidence for Temperature Chaos in Spin Glasses Zhai, Qiang Orbach, Raymond L. Schlagel, Deborah Disordered Systems and Neural Networks Statistical Mechanics We study the field cooled magnetization of a CuMn spin glass under temperature perturbations. The $T$-cycling curves are compared with the reference curve without temperature cycling. There is a crossover from the cumulative aging region to noncumulative aging region as the temperature change is increased. The cumulative aging range scales with the chaos length $\ell_\mathrm{c}$, becoming comparable to the correlation length, $ξ$, at the crossover boundary. The extracted chaos exponent, $ζ= 1.1$, is in agreement with theoretical predictions. Our results strongly suggest temperature chaos exists in real spin glasses system. |
| title | Evidence for Temperature Chaos in Spin Glasses |
| topic | Disordered Systems and Neural Networks Statistical Mechanics |
| url | https://arxiv.org/abs/2010.01214 |