Critical exponents of the U(n) vector spin glasses
Department of Condensed Matter Physics, Raymond and Beverly Sackler,
Faculty of Exact Sciences, Tel Aviv University - Tel Aviv 69978, Israel
The critical exponents of the classical spin glasses with symmetry are obtained to order of the ϵ-expansion around six dimensions, where . This new unitary symmetry is realized in the m-vector () spin glasses with anisotropic quenched random Dzyaloshinskii-Moriya (DM) interaction. Such a random DM interaction with n correlated couplings leads to critical exponents which are different from those of any isotropic m-vector spin glass and thus belong to new universality classes.
PACS: 75.10.Nr – Spin-glass and other random models / 75.40.Cx – Static properties (order parameter, static susceptibility, heat capacities, critical exponents, etc.)
© EDP Sciences, 1996