منابع مشابه
Phase transition in vector spin glasses.
We first give an experimental and theoretical introduction to spin glasses, and then discuss the nature of the phase transition in spin glasses with vector spins. Results of Monte Carlo simulations of the Heisenberg spin glass model in three dimensions are presented. A finite size scaling analysis of the correlation length of the spins and chiralities shows that there is a single, finite-temper...
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– The dependence of the transition temperature Tg in terms of the concentration of magnetic impurities c in spin glasses is explained on the basis of a screened RKKY interaction. The two observed power laws, Tg ∼ c at low c and Tg ∼ c 2/3 for intermediate c, are described in a unified approach. Metallic spin glasses such as Cu1−cMnc, Ag1−cMnc, Au1−cFec are alloys formed by magnetic impurities e...
متن کاملGauge Theories, Spin Glasses and Real Glasses
In this talk I will show that usual spin glasses are a peculiar kind of Abelian gauge theory. I will shortly review the techniques used to study them. At the end I will consider more general models (e.g. spin glasses based on non Abelian gauge group) and I will discuss the relevance of these models to real glasses. Finally I will derive from first principles a generalised Vogel-Fulcher law for ...
متن کاملSpin Glasses
The understanding of random magnetic systems known as spin glass has been one of the major challenges in condensed matter physics over that past two decades. Study of this state can be thought of as a rst step towards understanding more complex and disordered systems.This paper reviews some of the theoretical developmets in this eld and tries to answer the question how well are these systems un...
متن کاملSpin Glasses
An introduction and overview is given of the theory of spin glasses and its application .
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ژورنال
عنوان ژورنال: Journal de Physique Lettres
سال: 1977
ISSN: 0302-072X
DOI: 10.1051/jphyslet:019770038022045900