2017
DOI: 10.1103/physrevb.96.035110
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Effective field theory of an anomalous Hall metal from interband quantum fluctuations

Abstract: We construct an effective field theory a two-dimensional two-component metallic system described by a model with two Fermi surfaces ("pockets"). This model describes a translationally invariant metallic system with two types of fermions, each with its own Fermi surface, with forward scattering interactions. This model, in addition to the O(2) rotational invariance, has a U (1) × U (1) symmetry of separate charge conservation for each Fermi surface. For sufficiently attractive interactions in the d-wave (quadru… Show more

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“…Examples of such situations have been discussed in Refs. (91,92,93). To summarize this section, for spontaneously broken spatial symmetries, one has to pay attention to two additional subtleties: (i) The number of independent fluctuations may be fewer than the number of broken generators.…”
Section: 22mentioning
confidence: 99%
“…Examples of such situations have been discussed in Refs. (91,92,93). To summarize this section, for spontaneously broken spatial symmetries, one has to pay attention to two additional subtleties: (i) The number of independent fluctuations may be fewer than the number of broken generators.…”
Section: 22mentioning
confidence: 99%