Journal article
Persistent coherence of quantum superpositions in an optimally doped cuprate revealed by 2D spectroscopy
- Abstract:
- Quantum materials displaying intriguing magnetic and electronic properties could be key to the development of future technologies. However, it is poorly understood how the macroscopic behavior emerges in complex materials with strong electronic correlations. While measurements of the dynamics of excited electronic populations have been able to give some insight, they have largely neglected the intricate dynamics of quantum coherence. Here, we apply multidimensional coherent spectroscopy to a prototypical cuprate and report unprecedented coherent dynamics persisting for ~500 fs, originating directly from the quantum superposition of optically excited states separated by 20 to 60 meV. These results reveal that the states in this energy range are correlated with the optically excited states at ~1.5 eV and point to nontrivial interactions between quantum many-body states on the different energy scales. In revealing these dynamics and correlations, we demonstrate that multidimensional coherent spectroscopy can interrogate complex quantum materials in unprecedented ways.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, 5.1MB, Terms of use)
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- Publisher copy:
- 10.1126/sciadv.aaw9932
Authors
+ Engineering and Physical Sciences Research Council
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- Funder identifier:
- http://dx.doi.org/10.13039/501100000266
- Grant:
- EP/H033939/1
- Publisher:
- American Association for the Advancement of Science
- Journal:
- Science Advances More from this journal
- Volume:
- 6
- Issue:
- 9
- Pages:
- eaaw9932
- Publication date:
- 2020-02-28
- Acceptance date:
- 2019-12-05
- DOI:
- EISSN:
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2375-2548
- Language:
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English
- Keywords:
- Pubs id:
-
1093388
- Local pid:
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pubs:1093388
- Deposit date:
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2020-03-13
Terms of use
- Copyright holder:
- Novelli et al.
- Copyright date:
- 2020
- Rights statement:
- Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license, which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.
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