A Phenomenological Theory of Loop-Current Phases
Strongly Correlated Electrons
2014-05-19 v1
Abstract
A phenomenological theory of the loop-current and loop-spin-current phases is proposed. In order to investigate the stability of these phases, a Ginzburg-Landau-Wilson type action is constructed as a functional of the orbital magnetization. From the analysis of this action based on the Landau theory and momentum-shell one-loop renormalization group theory, it is found that the loop-current and loop-spin-current phases are stable if a certain interaction between the orbital magnetizations is sufficiently large. Moreover, these phases are likely to be stable in systems with large orbital susceptibility, for example, Dirac electron systems.
Cite
@article{arxiv.1405.4072,
title = {A Phenomenological Theory of Loop-Current Phases},
author = {Shimpei Goto and Susumu Kurihara},
journal= {arXiv preprint arXiv:1405.4072},
year = {2014}
}
Comments
4 pages, 2 figures