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Noncoplanar magnetic orders and gapless chiral spin liquid on the kagome lattice with staggered scalar spin chirality

by Fabrizio Oliviero, João Augusto Sobral, Eric C. Andrade, Rodrigo G. Pereira

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Submission summary

Authors (as registered SciPost users): Eric Andrade · Fabrizio Oliviero · Rodrigo Pereira
Submission information
Preprint Link: https://arxiv.org/abs/2112.03327v4  (pdf)
Date accepted: 2022-08-10
Date submitted: 2022-08-01 15:15
Submitted by: Oliviero, Fabrizio
Submitted to: SciPost Physics
Ontological classification
Academic field: Physics
Specialties:
  • Condensed Matter Physics - Theory
  • Condensed Matter Physics - Computational
Approaches: Theoretical, Computational

Abstract

Chiral three-spin interactions can suppress long-range magnetic order and stabilize quantum spin liquid states in frustrated lattices. We study a spin-1/2 model on the kagome lattice involving a staggered three-spin interaction $J_\chi$ in addition to Heisenberg exchange couplings $J_1$ on nearest-neighbor bonds and $J_d$ across the diagonals of the hexagons. We explore the phase diagram using a combination of a classical approach, parton mean-field theory, and variational Monte Carlo methods. We obtain a variety of noncoplanar magnetic orders, including a phase that interpolates between cuboc-1 and cuboc-2 states. In the regime of dominant $J_{\chi}$, we find a classically disordered region and argue that it may harbor a gapless chiral spin liquid with a spinon Fermi surface. Our results show that the competition between the staggered three-spin interaction and Heisenberg exchange interactions gives rise to unusual ground states of spin systems.

Published as SciPost Phys. 13, 050 (2022)



Author comments upon resubmission

Dear Editor in charge,

Thank you for the opportunity to submit our paper once more for the SciPost physics journal. As requested by the EIC, we did a minor revision of the manuscript. We believe that the current version of the manuscript was improved by the additional changes suggested by the referees. Once again, we thank both referees for the constructive comments on our work and the chance to answer their questions.

Sincerely,

The Authors.

List of changes

List of changes:

1- We added an appendix which explains the origin of the disordered region in the classical phase diagram showed in section 3.
2- Added new reference Ref. (55).

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