Infrared spectroscopy of Cr- and V-doped Sb2Te3: Dilute magnetic semiconductors
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F14%3A39898459" target="_blank" >RIV/00216275:25310/14:39898459 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1103/PhysRevB.90.205205" target="_blank" >http://dx.doi.org/10.1103/PhysRevB.90.205205</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.90.205205" target="_blank" >10.1103/PhysRevB.90.205205</a>
Alternative languages
Result language
angličtina
Original language name
Infrared spectroscopy of Cr- and V-doped Sb2Te3: Dilute magnetic semiconductors
Original language description
Temperature dependent optical reflectance measurements on well characterized samples of nonintentionally doped, Cr-doped, and V-doped Sb2Te3 show that both the parent compound and the Cr-doped version are narrow-gap semiconductors (E-g approximate to 0.25 eV) with a conventional Drude free carrier absorption. The carrier density increases slightly with decreasing temperature while the scattering rate increases quadratically with temperature, which is a sign of the importance of optical phonon scattering. Vanadium doping introduces a change in the temperature dependence of the scattering rate as well as higher electrical resistivity than Cr-doped Sb2Te3. An analysis of the literature values of the saturation magnetization of Sb2-xVxTe3 for H parallel toc suggests V is in a mixed valence state V3+/V4+.
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
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2014
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
1098-0121
e-ISSN
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Volume of the periodical
90
Issue of the periodical within the volume
20
Country of publishing house
US - UNITED STATES
Number of pages
7
Pages from-to
"205205-1"-"205205-7"
UT code for WoS article
000344409800003
EID of the result in the Scopus database
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