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Low-energy effective theory and anomalous Hall effect in monolayer $\mathrm{WTe}_2$

by S. Nandy, D. A. Pesin

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Submission summary

Authors (as registered SciPost users): Snehasish Nandy
Submission information
Preprint Link: https://arxiv.org/abs/2110.14586v3  (pdf)
Date accepted: 2022-03-22
Date submitted: 2022-02-18 18:08
Submitted by: Nandy, Snehasish
Submitted to: SciPost Physics
Ontological classification
Academic field: Physics
Specialties:
  • Condensed Matter Physics - Theory
Approach: Theoretical

Abstract

We develop a symmetry-based low-energy theory for monolayer $\mathrm{WTe}_2$ in its 1T$^{\prime}$ phase, which includes eight bands (four orbitals, two spins). This model reduces to the conventional four-band spin-degenerate Dirac model near the Dirac points of the material. We show that measurements of the spin susceptibility, and of the magnitude and time dependence of the anomalous Hall conductivity induced by injected or equilibrium spin polarization can be used to determine the magnitude and form of the spin-orbit coupling Hamiltonian, as well as the dimensionless tilt of the Dirac bands.

Published as SciPost Phys. 12, 120 (2022)



Author comments upon resubmission

We are grateful to the Referees for their comments and suggestions. We have uploaded our response to the referee comments in separate files.

List of changes

Summary of changes in response to referee report 1

1) We have included two new references (Refs.~31 and 32) in the revised version of the manuscript. (First Paragraph of Section-IIIC, Page 8)

2) In response to referee comment 2, we have added a clarifying sentence, stating that addition of sub-leading SOC would break spin conservation, but they don't. (To the end of second paragraph, left column , page 4)

3)We have modified the sentence in the revised manuscript in response to referee comment 3. (first paragraph, left column , page 5)

4)We have added a note on the magnitude of anomalous Hall effect to the ``Conclusions" section of the revised manuscript.

Summary of changes in response to referee report 2

1) We have mentioned the mismatch value in response to referee comment 1. (first paragraph, left column, page 3)

2)In response to referee comment 2, we have added explicit citations (refs. 27 and 28) to the text to emphasize the point as well as also added a follow-up sentence to clarify the point in question. (To the end of first paragraph, left column , page 3)

3) We broke the sentence into two parts in response to referee comment 3. (second paragraph, left column , page 4)

4) We have added a clarifying sentence right after Eq.(25) on page 8 in response to referee comment 4.


Reports on this Submission

Anonymous Report 1 on 2022-2-22 (Invited Report)

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The authors have addressed my comments/questions and I suggest publication of the paper as it is.

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