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Statut |
Confirmé |
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Série |
LPENS-MDQ |
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Domaines |
cond-mat |
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Date |
Lundi 30 Novembre 2015 |
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Heure |
13:30 |
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Institut |
LPA |
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Salle |
Conf IV, 24 rue Lhomond |
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Nom de l'orateur |
Ioffe |
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Prenom de l'orateur |
Lev |
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Addresse email de l'orateur |
lev [dot] b [dot] ioffe [at] gmail [dot] com |
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Institution de l'orateur |
LPTHE-Paris |
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Titre |
Puzzle of bad metals in Josephson junction arrays: experiment and theory. |
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Résumé |
In the introduction I review the physics of the Josephson arrays and the general problem of the superconductor-insulator transition in these structures. In the main part of the talk I will focus on the novel phases appearing in one-dimensional Josephson junction chains at relatively high temperatures. I will argue that these phases are robust with respect to the presence of the ubiquitous random charges and thus allow experimental observation. I show that at finite temperatures both ordered and disordered chain display a dynamical transition to the many body localized state. This transition is preempted by the parametrically wide regime of non-ergodic behavior. While resistivity is strictly infinite in the many body localized state, it is exponentially large in the intermediate non-ergodic bad metal. I will discuss the possibility of the experimental observation of these transitions. |
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Numéro de preprint arXiv |
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Commentaires |
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Fichiers attachés |
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