منابع مشابه
Phase transitions in generalized chiral or Stiefel’s models
We study the phase transition in generalized chiral or Stiefel’s models using Monte Carlo simulations. These models are characterized by a breakdown of symmetry O(N)/O(N −P ). We show that the phase transition is clearly first order for N ≥ 3 when P = N and P = N − 1, contrary to predictions based on the Renormalization Group in 4 − ǫ expansion but in agreement with a recent non perturbative Re...
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The discovery of Weyl semimetals (WSM) has brought forth the condensed matter realization of Weyl fermions, which were previously theorized as low energy excitations in high energy particle physics. Recently, transition metal mono-pnictides are under intense investigation for understanding properties of inversion-symmetry broken Weyl semimetals. Non-trivial Berry phase and chirality are importa...
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The semiclassical motion of electrons in phase space x = (R,k) is influenced by Berry phases described by a six-component vector potential A = (AR,Ak). In chiral magnets, Dzyaloshinskii-Moriya (DM) interactions induce slowly varying magnetic textures (helices and skyrmion lattices) for which all components of A are important, inducing effectively a curvature in mixed position and momentum space...
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ژورنال
عنوان ژورنال: Journal of Physics A: Mathematical and General
سال: 1997
ISSN: 0305-4470,1361-6447
DOI: 10.1088/0305-4470/30/6/040