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Competition between fluctuations and disorder in frustrated magnets

Julien Serreau·Matthieu Tissier
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Abstract

We investigate the effects of impurities on the nature of the phase transition in frustrated magnets, in d=4-epsilon dimensions. For sufficiently small values of the number of spin components, we find no physically relevant stable fixed point in the deep perturbative region (epsilon << 1), contrarily to what is to be expected on very general grounds. This signals the onset of important physical effects.

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Julien Serreau, Matthieu Tissier. 2003-02-21. Competition between fluctuations and disorder in frustrated magnets. https://doi.org/10.1103/physrevb.67.052404

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