RUS  ENG
Full version
JOURNALS // Fizika Tverdogo Tela // Archive

Fizika Tverdogo Tela, 2016 Volume 58, Issue 8, Pages 1614–1616 (Mi ftt9898)

This article is cited in 5 papers

Phase transitions

Anisotropy induced by impurities of “random local field” type in $O(n)$ models and suppression of the Imry–Ma inhomogeneous state

A. A. Berzina, A. I. Morozovb, A. S. Sigova

a MIREA — Russian Technological University, Moscow
b Moscow Institute of Physics and Technology (State University), Dolgoprudny, Moscow region

Abstract: It is shown that in a system with anisotropic distribution of the impurity-induced random local field directions in the $n$-dimensional space of a vector order parameter with the $O(n)$ symmetry, the impurityinduced effective anisotropy arises for the space dimensionality 2 $<d<$ 4. If the anisotropy constant exceeds the threshold value, then an inhomogeneous state predicted by Imry and Ma becomes energetically unfavorable, and the system goes back to a state with the long-range order.

Received: 09.02.2016


 English version:
Physics of the Solid State, 2016, 58:8, 1671–1674

Bibliographic databases:


© Steklov Math. Inst. of RAS, 2025