Dr. Jürgen Stein

Abstract

J. Stein: Critical exponents of the U(n) vector spin glasses, Europhys. Lett. 34 (1996) 717 (Postscript-File)

The critical exponents of the classical spin glasses with symmetry are obtained to order of the -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.