Statut | Confirmé |
Série | LPENS-MDQ |
Domaines | cond-mat |
Date | Lundi 30 Novembre 2015 |
Heure | 13:30 |
Institut | LPA |
Salle | Conf IV, 24 rue Lhomond |
Nom de l'orateur | Ioffe |
Prenom de l'orateur | Lev |
Addresse email de l'orateur | lev [dot] b [dot] ioffe [at] gmail [dot] com |
Institution de l'orateur | LPTHE-Paris |
Titre | Puzzle of bad metals in Josephson junction arrays: experiment and theory. |
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. |
Numéro de preprint arXiv | |
Commentaires | |
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