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- Title
Spin-Fluctuation Transition in the Disordered Ising Model.
- Authors
Bogoslovskiy, N. A.; Petrov, P. V.; Averkiev, N. S.
- Abstract
A model of an impurity system in semiconductors consisting of spins randomly distributed in space with a hydrogen-like distance dependence of the exchange energy in the Ising Hamiltonian has been studied. The distribution function of the exchange energy and the mean square of the magnetic moment have been calculated as functions of the concentration. It has been shown that the so-called spin-fluctuation transition, which is associated with a change in the mean square of the magnetic moment, occurs in the system of spins at the concentration close to the concentration at which the metal–insulator transition occurs in semiconductors.
- Subjects
ISING model; MAGNETIC moments; SEMICONDUCTOR defects; CONCENTRATION functions; DISTRIBUTION (Probability theory); METAL-insulator transitions
- Publication
JETP Letters, 2021, Vol 114, Issue 6, p347
- ISSN
0021-3640
- Publication type
Article
- DOI
10.1134/S0021364021180077