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arXiv · 1806.09492

Excessive Noise as a Test for Many-Body Localization

I. Tamir·T. Levinson·F. Gorniaczyk·A. Doron·J. Lieb·D. Shahar
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Abstract

Recent experimental reports suggested the existence of a finite-temperature insulator in the vicinity of the superconductor-insulator transition. The rapid decay of conductivity over a narrow temperature range was theoretically linked to both a finite-temperature transition to a many-body-localized state, and to a charge-Berezinskii Kosterlitz Thouless transition. Here we report of low-frequency noise measurements of such insulators to test for many body localization. We observed a huge enhancement of the low-temperatures noise when exceeding a threshold voltage for nonlinear conductivity and discuss our results in light of the theoretical models.

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I. Tamir, T. Levinson, F. Gorniaczyk, A. Doron, J. Lieb, D. Shahar. 2019-01-29. Excessive Noise as a Test for Many-Body Localization. https://doi.org/10.1103/physrevb.99.035135

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