Ultrafast spin-polarization control of Dirac fermions in topological insulators
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23640%2F16%3A43929032" target="_blank" >RIV/49777513:23640/16:43929032 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1103/PhysRevB.93.155426" target="_blank" >http://dx.doi.org/10.1103/PhysRevB.93.155426</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.93.155426" target="_blank" >10.1103/PhysRevB.93.155426</a>
Alternative languages
Result language
angličtina
Original language name
Ultrafast spin-polarization control of Dirac fermions in topological insulators
Original language description
Three-dimensional topological insulators (TIs) are characterized by spin-polarized Dirac-cone surface states that are protected from backscattering by time-reversal symmetry. Control of the spin polarization of topological surface states (TSSs) using femtosecond light pulses opens novel perspectives for the generation and manipulation of dissipationless surface spin currents on ultrafast time scales. Using time-, spin-, and angle-resolved spectroscopy, we directly monitor the ultrafast response of the spin polarization of photoexcited TSSs to circularly polarized femtosecond pulses of infrared light. We achieve all-optical switching of the transient out-of-plane spin polarization, which relaxes in about 1.2 ps. Our observations establish the feasibility of ultrafast optical control of spin-polarized Dirac fermions in TIs and pave the way for optospintronic applications at ultimate speeds.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Result continuities
Project
<a href="/en/project/ED2.1.00%2F03.0088" target="_blank" >ED2.1.00/03.0088: Centre of the New Technologies and Materials</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2016
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
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Volume of the periodical
93
Issue of the periodical within the volume
15
Country of publishing house
US - UNITED STATES
Number of pages
10
Pages from-to
'155426-1' - '155426-10'
UT code for WoS article
000374534000003
EID of the result in the Scopus database
2-s2.0-84964470830