The spin freezing transition in the disordered electron problem
- 11 June 1990
- journal article
- letter
- Published by IOP Publishing in Journal of Physics: Condensed Matter
- Vol. 2 (23) , 5259-5264
- https://doi.org/10.1088/0953-8984/2/23/017
Abstract
The authors consider a generic model for a disordered Fermi liquid. By means of an infinite resummation of the loop expansion they show that there is a phase transition involving the spin degrees of freedom which can be identified with a new fixed point in the renormalisation group flow equations. The critical exponents obtained for 2<d<4 are apparently exact. The large-disorder phase is described as an incompletely frozen spin phase with no long-range order and subdiffusive spin transport. The results are in good agreement with experiments on Si:P.Keywords
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