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Diener, P., Janod, E., Corraze, B., Querre, M., Adda, C., Guilloux-Viry, M., Cordier, S., Camjayi, A., Rozenberg, M., Besland, M. P. & Cario, L. (2018) How a dc Electric Field Drives Mott Insulators Out of Equilibrium. Physical Review Letters, 121 016601. 
Added by: Richard Baschera (2018-07-24 14:20:58)   Last edited by: Richard Baschera (2018-07-24 14:25:21)
Type de référence: Article
DOI: 10.1103/PhysRevLett.121.016601
Clé BibTeX: Diener2018
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Catégories: INTERNATIONAL, PCM, PMN
Créateurs: Adda, Besland, Camjayi, Cario, Cordier, Corraze, Diener, Guilloux-Viry, Janod, Querre, Rozenberg
Collection: Physical Review Letters
Consultations : 3/373
Indice de consultation : 3%
Indice de popularité : 0.75%
Résumé     
Out of equilibrium phenomena are a major issue of modern physics. In particular, correlated materials such as Mott insulators experience fascinating long-lived exotic states under a strong electric field. Yet, the origin of their destabilization by the electric field is not elucidated. Here we present a comprehensive study of the electrical response of canonical Mott insulators GaM(4)Q(8) (M = V, Nb, Ta, Mo; Q = S, Se) in the context of a microscopic theory of electrical breakdown where in-gap states allow for a description in terms of a two-temperature model. Our results show how the nonlinearities and the resistive transition originate from a massive creation of hot electrons under an electric field. These results give new insights for the control of the long-lived states reached under an electric field in these systems which has recently open the way to new functionalities used in neuromorphic applications.
  
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