Journal article
Nonlinear spectroscopy of random quantum magnets
- Abstract:
- We study nonlinear response in quantum spin systems near infinite-randomness critical points. Nonlinear dynamical probes, such as two-dimensional (2D) coherent spectroscopy, can diagnose the nearly localized character of excitations in such systems. We present exact results for nonlinear response in the 1D random transverse-field Ising model, from which we extract information about critical behavior that is absent in linear response. Our analysis yields exact scaling forms for the distribution functions of relaxation times that result from realistic channels for dissipation in random magnets. We argue that our results capture the scaling of relaxation times and nonlinear response in generic random quantum magnets in any spatial dimension.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, 1.3MB, Terms of use)
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- Publisher copy:
- 10.1103/PhysRevLett.125.237601
Authors
- Publisher:
- American Physical Society
- Journal:
- Physical Review Letters More from this journal
- Volume:
- 125
- Issue:
- 23
- Article number:
- 237601
- Publication date:
- 2020-12-02
- Acceptance date:
- 2020-10-21
- DOI:
- EISSN:
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1079-7114
- ISSN:
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0031-9007
- Language:
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English
- Keywords:
- Pubs id:
-
1138075
- Local pid:
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pubs:1138075
- Deposit date:
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2020-10-21
Terms of use
- Copyright holder:
- American Physical Society
- Copyright date:
- 2020
- Rights statement:
- © 2020 American Physical Society
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