Quantum critical behavior in disordered itinerant ferromagnets: Logarithmic corrections to scaling

Details Quantum critical behavior in disordered itinerant ferromagnets: Logarithmic corrections to scaling Quantum critical behavior in disordered itinerant ferromagnets: Logarithmic corrections to scaling

2000-10-24

arxiv.org/abs/cond-mat/0010377v2

Phys. Rev. B 63, 174428 (2001)

Physics

Condensed Matter

Statistical Mechanics

15pp., REVTeX, 8 eps figs, final version as published

Scientific paper

10.1103/PhysRevB.63.174428

The quantum critical behavior of disordered itinerant ferromagnets is determined exactly by solving a recently developed effective field theory. It is shown that there are logarithmic corrections to a previous calculation of the critical behavior, and that the exact critical behavior coincides with that found earlier for a phase transition of undetermined nature in disordered interacting electron systems. This confirms a previous suggestion that the unspecified transition should be identified with the ferromagnetic transition. The behavior of the conductivity, the tunneling density of states, and the phase and quasiparticle relaxation rates across the ferromagnetic transition is also calculated.

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