2020/07/14 by Sudipta Chatterjee, Ravindra Singh Bisht, Chatterjee, Sudipta +5
Earth and Planetary Sciences · Physics and Astronomy · #FOS: Physical sciences #High-pressure geophysics and materials #Strongly Correlated Electrons (cond-mat.str-el) #Surface and Thin Film Phenomena #Theoretical and Computational Physics
paper · pdf · doi:10.48550/arxiv.2007.07067
openalex publication_date 2020/07/14 · openalex created_date 2020/07/23 · openalex updated_date 2026/07/28
We observed that close to a Mott transition, over a small temperature range, the predominance of slow relaxations leads to decoupling of electrons from the thermal bath. This has been established by observation of large deviation of the thermal noise in the films of Mott system NdNiO3 from the canonical Johnson-Nyquist value of 4kBTR close to the transition. It is suggested that such a large noise arise from small isolated pockets of nanometric metallic phases (estimated size ∼ 15-20 nm) within the insulating phase with the charging energy as the control parameter.