Metal-Insulator Transition in Randomly Interacting Systems
B. Rosenow, R. Oppermann
Abstract
We discuss a metal-insulator transition caused by random couplings of magnetic moments in itinerant systems. An analytic solution for the single particle Green function is derived from dynamical self consistency equations, the corresponding density of states is characterized by the opening of a gap. The scaling behavior of observables is analyzed in the framework of a scaling theory and different crossover lines are identified. A fluctuation expansion around the mean field solution accounts for both interaction and localization effects in a consistent manner and is argued to be relevant for the description of the recently discovered metal-insulator transition in 2d electronic systems.
Create a lesson
Related papers
Emergent one-dimensional Bloch oscillations in coupled Ising layers
E. S. Ma, Z. Song
Exotic metallic phase in a heterotic Kondo lattice: violation of Luttinger's theorem and absence of Kondo gap
Hanting Zhong, Shuxiang Yang, Chao Cao et al.
Exact SU(N) symmetry resolution of bosonic Hubbard models: general boson-fermion mappings and flat-band singlet-cluster states
Loïc Herviou
A new approach to the Kondo effect: sophomore's dream function and Lee-Yang zeros
V. Yu. Irkhin
Temperature evolution of spin dynamics in extended Kitaev models within an Abrikosov fermion theory beyond mean field
Daiki Sasamoto, Joji Nasu
Interplay of disorder and spin liquid physics in the triangular-lattice antiferromagnet YbZn2GaO5
Hafsa Zeroual, Shams Sohel Islam, Toni Shiroka et al.