2001/09/24 by A. J. Millis, A. J. Schofield, G. G. Lonzarich +1
Physics and Astronomy · #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.88.217204
published as Phys. Rev. Lett. 88, 217204 (2002) · 4 pages latex (Revtex 4) and 3 eps figures
arxiv created 2001/09/24 · arxiv updated 2009/11/30
A renormalization group treatment of metamagnetic quantum criticality in metals is presented. In clean systems the universality class is found to be of the overdamped, conserving (dynamical exponent z=3) Ising type. Detailed results are obtained for the field and temperature dependence of physical quantities including the differential susceptibility, resistivity and specific heat near the transition. An application of the theory is made to Sr3Ru2O7, which appears to exhibit a metamagnetic critical end-point at a very low temperature and a field of order 5-7T.