Nonuniform carrier density in Cd3As2 evidenced by optical spectroscopy
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10387081" target="_blank" >RIV/00216208:11320/18:10387081 - isvavai.cz</a>
Alternative codes found
RIV/00216224:14310/18:00104789
Result on the web
<a href="https://doi.org/10.1103/PhysRevB.97.125204" target="_blank" >https://doi.org/10.1103/PhysRevB.97.125204</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.97.125204" target="_blank" >10.1103/PhysRevB.97.125204</a>
Alternative languages
Result language
angličtina
Original language name
Nonuniform carrier density in Cd3As2 evidenced by optical spectroscopy
Original language description
We report the detailed optical properties of Cd3As2 crystals in a wide parameter space: temperature, magnetic field, carrier concentration, and crystal orientation. We investigate high-quality crystals synthesized by three different techniques. In all the studied samples, independently of how they were prepared and how they were treated before the optical experiments, our data indicate conspicuous fluctuations in the carrier density (up to 30%). These charge puddles have a characteristic scale of 100 mu m, they become more pronounced at low temperatures, and possibly, they become enhanced by the presence of crystal twinning. The Drude response is characterized by very small scattering rates (similar to 1 meV) for as-grown samples. Mechanical treatment, such as cutting or polishing, influences the optical properties of single crystals, by increasing the Drude scattering rate and also modifying the high-frequency optical response. Magnetoreflectivity and Kerr rotation are consistent with electronlike charge carriers and a spatially nonuniform carrier density.
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
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
<a href="/en/project/LQ1601" target="_blank" >LQ1601: CEITEC 2020</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2018
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
97
Issue of the periodical within the volume
12
Country of publishing house
US - UNITED STATES
Number of pages
9
Pages from-to
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UT code for WoS article
000428011700005
EID of the result in the Scopus database
2-s2.0-85044479218