Role of Van Hove singularities and effective mass anisotropy in polarization-resolved high harmonic spectroscopy of silicon
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F22%3A00568403" target="_blank" >RIV/68378271:_____/22:00568403 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11320/22:10451971
Result on the web
<a href="https://hdl.handle.net/11104/0339715" target="_blank" >https://hdl.handle.net/11104/0339715</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1038/s42005-022-01075-y" target="_blank" >10.1038/s42005-022-01075-y</a>
Alternative languages
Result language
angličtina
Original language name
Role of Van Hove singularities and effective mass anisotropy in polarization-resolved high harmonic spectroscopy of silicon
Original language description
Nonlinear optical response of materials exposed to strong nonresonant light fields leads to production of high energy photons whose spectra contain fingerprints of the coherent electron dynamics in the material. In this paper we investigate how the high harmonic spectra generated in crystalline silicon are linked to specific properties of its band structure. By comparing the polarization anisotropy of high harmonic spectra for two distinct frequencies of the driving pulses we show that the anisotropy has two sources. When driven by mid-infrared light, the signal at specific photon energies is enhanced by the presence of Van Hove singularities in the joint density of states of silicon. With near-infrared driving pulses, in contrast, the high harmonic yield is mainly influenced by the anisotropy of the reduced mass of electron-hole pair, which is related to the nonresonant excitation probability. The experimental results are compared with numerical calculations using time-dependent density functional theory.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
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
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
COMMUNICATIONS PHYSICS
ISSN
2399-3650
e-ISSN
2399-3650
Volume of the periodical
5
Issue of the periodical within the volume
1
Country of publishing house
DE - GERMANY
Number of pages
8
Pages from-to
288
UT code for WoS article
000885004200001
EID of the result in the Scopus database
2-s2.0-85142191608