Variable range cotunneling and conductivity of a granular metal
M. V. Feigel'man, A. S. Ioselevich
Abstract
The Efros-Shklovskii law for the conductivity of granular metals is interpreted as a result of a variable range cotunneling process. The cotunneling between distant resonant grains is predominantly elastic at low T << Tc, while it is inelastic (i.e., accompanied by creation of electron-hole pairs on a string of intermediate non-resonant grains) at T > Tc. The corresponding E-S temperature TES in the latter case is slightly (logarithmically) T-dependent. The magnetoresistance in the two cases is different: it may be relatively strong and negative at T much below Tc, while at T>Tc it is suppressed due to inelastic processes which destroy the interference.
Create a lesson
Related papers
Observation of correlations beyond the single-particle picture in fermionic counting statistics
Johann Zöllner, Hendrik Mannel, Daniel Oppers et al.
Magnetic field induced modulation of heat transport in CrPS4 probed by TaIrTe4 transverse Seebeck thermometry
Krishnaraajan Sundararajan, Sergio Alvarruiz, Cédric A. Cordero-Silis et al.
Nonadiabatic dynamics under slow parametric modulation in nonlinear graphene resonators
Chris F. D. Wattjes, Haemin Lim, Pierpaolo Belardinelli et al.
Orientation-Dependent Universality of Spin-Transport Fluctuations in Two-Dimensional Altermagnets
Yihan Zhang, Zheng Qin, Donghui Xu et al.
Chern insulator optics
Jason G. Kattan, J. E. Sipe
Pseudo-relativistic fermions and topological states in zinc-blende semiconductors and their heterostructures (Habilitation thesis)
Sergey S. Krishtopenko