Sign Change in the Anomalous Hall Effect and Strong Transport Effects in a 2D Massive Dirac Metal Due to Spin-Charge Correlated Disorder

Aydın Cem Keser, Roberto Raimondi, and Dimitrie Culcer
Phys. Rev. Lett. 123, 126603 – Published 17 September 2019
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Abstract

The anomalous Hall effect (AHE) is highly sensitive to disorder in the metallic phase. Here we show that statistical correlations between the charge-spin disorder sectors strongly affect the conductivity and the sign or magnitude of AHE. As the correlation between the charge and gauge-mass components increases, so does the AHE, achieving its universal value, and even exceeding it, although the system is an impure metal. The AHE can change sign when the anticorrelations reverse the sign of the effective Dirac mass, a possible mechanism behind the sign change seen in recent experiments.

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  • Received 7 March 2019

DOI:https://doi.org/10.1103/PhysRevLett.123.126603

© 2019 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Aydın Cem Keser1,2, Roberto Raimondi3, and Dimitrie Culcer1,2

  • 1School of Physics, University of New South Wales, Kensington, NSW 2052, Australia
  • 2Australian Research Council Centre of Excellence in Low-Energy Electronics Technologies, The University of New South Wales, Sydney 2052, Australia
  • 3Dipartimento di Matematica e Fisica, Università Roma Tre, Via della Vasca Navale 84, I-00146 Roma, Italy

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Issue

Vol. 123, Iss. 12 — 20 September 2019

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