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Journal article

Spiral spin liquid noise

Abstract:
An emerging concept for identification of different types of spin liquids [C. Broholm et al., Science 367, eaay0668 (2020)] is through the use of spontaneous spin noise [S. Chatterjee, J. F. Rodriguez-Nieva, E. Demler, Phys. Rev. B 99, 104425 (2019)]. Here, we develop spin noise spectroscopy for spin liquid studies by considering Ca10Cr7O28, a material hypothesized to be either a quantum or a spiral spin liquid (SSL). By enhancing techniques introduced for magnetic monopole noise studies [R. Dusad et al., Nature 571, 234–239 (2019)], we measure the time and temperature dependence of spontaneous flux Φ(t, T) and thus magnetization M(t, T) of Ca10Cr7O28 samples. The resulting power spectral density of magnetization noise SMω, T reveals intense spin fluctuations with SMω, T∝ω-α(T) and 0.84
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1073/pnas.2422498122

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Physics - Central
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Physics - Central
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Physics - Central
Role:
Author
ORCID:
0000-0003-0003-8140


More from this funder
Funder identifier:
https://doi.org/10.13039/100014013
More from this funder
Funder identifier:
https://doi.org/10.13039/501100000288
More from this funder
Funder identifier:
https://doi.org/10.13039/501100001602
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Funder identifier:
https://doi.org/10.13039/501100000781
More from this funder
Funder identifier:
https://doi.org/10.13039/100000936


Publisher:
National Academy of Sciences
Journal:
Proceedings of the National Academy of Sciences More from this journal
Volume:
122
Issue:
12
Article number:
e2422498122
Publication date:
2025-03-18
Acceptance date:
2025-02-10
DOI:
EISSN:
1091-6490
ISSN:
0027-8424


Language:
English
Keywords:
Source identifiers:
2782966
Deposit date:
2025-03-19
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