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arXiv · 1405.4072

A Phenomenological Theory of Loop-Current Phases

Shimpei Goto·Susumu Kurihara
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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.

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Shimpei Goto, Susumu Kurihara. 2014-05-16. A Phenomenological Theory of Loop-Current Phases. https://arxiv.org/abs/1405.4072

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