Journal article

Glide symmetry breaking and Ising criticality in the quasi-1D magnet CoNb2O6

Abstract:: We construct a microscopic spin-exchange Hamiltonian for the quasi–one-dimensional (1D) Ising magnet CoNb2O6 that captures detailed and hitherto-unexplained aspects of its dynamic spin structure factor. We perform a symmetry analysis that recalls that an individual Ising chain in this material is buckled, with two sites in each unit cell related by a glide symmetry. Combining this with numerical simulations benchmarked against neutron scattering experiments, we argue that the single-chain Hamiltonian contains a staggered spin-exchange term. We further argue that the transverse-field–tuned quantum critical point in CoNb2O6 corresponds to breaking this glide symmetry, rather than an on-site Ising symmetry as previously believed. This gives a unified microscopic explanation of the dispersion of confined states in the ordered phase and quasiparticle breakdown in the polarized phase at high transverse field.

Publication status:: Published

Peer review status:: Peer reviewed

Actions

Email

Email this record

Send the bibliographic details of this record to your email address.

Your Email
Please enter the email address that the record information will be sent to.

-
Your message (optional)
Please add any additional information to be included within the email.
Cite

Cite this record

APA Style

Fava, M., Coldea, R., & Ashok Parameswaran, S. (2020). Glide symmetry breaking and Ising criticality in the quasi-1D magnet CoNb2O6. Proceedings of the National Academy of Sciences, 117(41), 25219–25224.

MLA Style

Fava, M., et al. “Glide Symmetry Breaking and Ising Criticality in the Quasi-1D Magnet CoNb2O6.” Proceedings of the National Academy of Sciences, vol. 117, no. 41, National Academy of Sciences, 2020, pp. 25219–24.

Chicago Style

Fava, M, R Coldea, and S Ashok Parameswaran. 2020. “Glide Symmetry Breaking and Ising Criticality in the Quasi-1D Magnet CoNb2O6.” Proceedings of the National Academy of Sciences 117 (41): 25219–24.
Share
Print

Access Document

Files:: FavaetalVoR2020.pdf

(Preview, Version of record, 1.1MB, Terms of use)

Publisher copy:: 10.1073/pnas.2007986117

Authors

+ Fava, M More by this author

Institution:: University of Oxford
Division:: MPLS
Department:: Physics
Sub department:: Theoretical Physics
Role:: Author

+ Coldea, R More by this author

Institution:: University of Oxford
Division:: MPLS
Department:: Physics
Sub department:: Theoretical Physics
Role:: Author

+ Ashok Parameswaran, S More by this author

Institution:: University of Oxford
Division:: MPLS
Department:: Physics
Sub department:: Theoretical Physics
Oxford college:: Hertford College
Role:: Author

+ European Commission More from this funder

Grant:: 804213; 788814

Publisher:: National Academy of Sciences
Journal:: Proceedings of the National Academy of Sciences More from this journal
Volume:: 117
Issue:: 41
Pages:: 25219-25224
Publication date:: 2020-09-25
Acceptance date:: 2020-08-18
DOI:: 10.1073/pnas.2007986117
ISSN:: 0027-8424

Language:: English
Keywords:: FFR
Pubs id:: 1127211
Local pid:: pubs:1127211
Deposit date:: 2020-08-19

Terms of use

Copyright holder:: Fava et al.
Copyright date:: 2020
Rights statement:: © 2020 the Author(s). Published by PNAS. This open access article is distributed under Creative Commons Attribution-NonCommercial-NoDerivatives License 4.0 (CC BY-NC-ND).

Licence:: CC Attribution-NonCommercial-NoDerivatives (CC BY-NC-ND)

Views and Downloads

About views and downloads

If you are the owner of this record, you can report an update to it here: Report update to this record

TO TOP