Metallic Continuum Quantum Ferromagnets at Finite Temperature
Strongly Correlated Electrons
2015-06-24 v2
Abstract
We study via renormalization group (RG) and large N methods the problem of continuum SU(N) quantum Heisenberg ferromagnets (QHF) coupled to gapless electrons. We establish the phase diagram of the dissipative problem and investigate the changes in the Curie temperature, magnetization, and magnetic correlation length due to dissipation and both thermal and quantum fluctuations. We show that the interplay between the topological term (Berry's phase) and dissipation leads to non-trivial effects for the finite temperature critical behavior.
Cite
@article{arxiv.cond-mat/0208185,
title = {Metallic Continuum Quantum Ferromagnets at Finite Temperature},
author = {Antonio H. Castro Neto and Marcello B. Silva Neto},
journal= {arXiv preprint arXiv:cond-mat/0208185},
year = {2015}
}
Comments
Corrected typos, new discussion of T=0 results, to appear in Europhys. Lett