Photoionization and transient Wannier-Stark ladder in silicon: First-principles simulations versus Keldysh theory
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F21%3A00561201" target="_blank" >RIV/68378271:_____/21:00561201 - isvavai.cz</a>
Result on the web
<a href="https://hdl.handle.net/11104/0333877" target="_blank" >https://hdl.handle.net/11104/0333877</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.104.L241201" target="_blank" >10.1103/PhysRevB.104.L241201</a>
Alternative languages
Result language
angličtina
Original language name
Photoionization and transient Wannier-Stark ladder in silicon: First-principles simulations versus Keldysh theory
Original language description
Nonlinear photoionization of dielectrics and semiconductors is widely treated in the framework of the Keldysh theory whose validity is limited to photon energies that are small compared to the band gap and relatively low laser intensities. The time-dependent density functional theory (TDDFT) simulations, which are free of these limitations, enable one to gain insight into nonequilibrium dynamics of the electronic structure. Here we apply TDDFT to investigate the photoionization of silicon crystal by ultrashort laser pulses in a wide range of laser wavelengths and intensities and compare the results with predictions of the Keldysh theory. Photoionization rates derived from the simulations considerably exceed the data obtained with the Keldysh theory within the validity range of the latter. Possible reasons for the discrepancy are discussed and we provide fundamental data on the photoionization rates beyond the limits of the Keldysh theory.n
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
10306 - Optics (including laser optics and quantum optics)
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review B
ISSN
2469-9950
e-ISSN
2469-9969
Volume of the periodical
104
Issue of the periodical within the volume
24
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
L241201
UT code for WoS article
000778835400001
EID of the result in the Scopus database
2-s2.0-85122042067