Nonlinear valley selection rules and all-optical probe of broken time-reversal symmetry in monolayer WSe2
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F25%3A43932199" target="_blank" >RIV/60461373:22310/25:43932199 - isvavai.cz</a>
Result on the web
<a href="https://www.nature.com/articles/s41566-024-01591-z" target="_blank" >https://www.nature.com/articles/s41566-024-01591-z</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1038/s41566-024-01591-z" target="_blank" >10.1038/s41566-024-01591-z</a>
Alternative languages
Result language
angličtina
Original language name
Nonlinear valley selection rules and all-optical probe of broken time-reversal symmetry in monolayer WSe2
Original language description
In monolayer transition metal dichalcogenides, time-reversal symmetry-combined with broken space-inversion symmetry-defines the spin-valley degree of freedom. As such, the engineering and control of time-reversal symmetry by optical or magnetic fields constitutes the foundation of valleytronics. Here we propose a new approach for the detection of broken time-reversal symmetry and valley imbalance in monolayer WSe2 based on second-harmonic generation. At room temperature, our method can selectively probe a net valley imbalance generated by ultrafast, coherent and valley-exclusive optical Stark and Bloch-Siegert effects. This work demonstrates the potential and unique capabilities of nonlinear optics as a probe of broken time-reversal symmetry as well as a tool for ultrafast and non-destructive valleytronic operations.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10402 - Inorganic and nuclear chemistry
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Nature Photonics
ISSN
1749-4885
e-ISSN
1749-4893
Volume of the periodical
19
Issue of the periodical within the volume
3
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
300-306
UT code for WoS article
001391764200001
EID of the result in the Scopus database
2-s2.0-85214413796