Nonuniform carrier density in Cd3As2 evidenced by optical
spectroscopy

J 2018

Nonuniform carrier density in Cd3As2 evidenced by optical spectroscopy

CRASSEE, I.; E. MARTINO; C.C. HOMES; Ondřej CAHA; Jiří NOVÁK et al.

Základní údaje

Originální název

Nonuniform carrier density in Cd3As2 evidenced by optical spectroscopy

Autoři

Vydání

Physical Review B, College PK, The American Physical Society, 2018, 2469-9950

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10302 Condensed matter physics

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 3.736

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/18:00104789

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

DIRAC SEMIMETAL CD3AS2; CRYSTAL-GROWTH

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 30. 7. 2026 14:58, Mgr. Jiří Novák, Ph.D.

Anotace

V originále

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.

Návaznosti

LQ1601, projekt VaV

Název: CEITEC 2020 (Akronym: CEITEC2020)

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, CEITEC 2020

692034, interní kód MU

Název: TWINFUSYON - Twinning for Improving Capacity of Research in Multifunctional Nanosystems for Optronic Biosensing (Akronym: TWINFUSYON)

Investor: Evropská unie, TWINFUSYON - Twinning for Improving Capacity of Research in Multifunctional Nanosystems for Optronic Biosensing, Spreading excellence and widening participation

Přiložené soubory

PhysRevB.97.125204.pdf

Požádat o autorskou verzi souboru

Citovat

CRASSEE, I.; E. MARTINO; C.C. HOMES; Ondřej CAHA; Jiří NOVÁK; P. TUCKMANTEL; M. HAKL; A. NATEPROV; E. ARUSHANOV; Q.D. GIBSON; R.J. CAVA; S.M. KOOHPAYEH; K.E. ARPINO; T.M. MCQUEEN; M. ORLITA a A. AKRAP. Nonuniform carrier density in Cd3As2 evidenced by optical spectroscopy. Physical Review B. College PK: The American Physical Society, 2018, roč. 97, č. 12, s. "125204-1" - "125204-9", 9 s. ISSN 2469-9950. Dostupné z: https://doi.org/10.1103/PhysRevB.97.125204.

@article{1475037,
   author = {Crassee, I. and Martino, E. and Homes, C.C. and Caha, Ondřej and Novák, Jiří and Tuckmantel, P. and Hakl, M. and Nateprov, A. and Arushanov, E. and Gibson, Q.D. and Cava, R.J. and Koohpayeh, S.M. and Arpino, K.E. and McQueen, T.M. and Orlita, M. and Akrap, A.},
   article_location = {College PK},
   article_number = {12},
   doi = {https://doi.org/10.1103/PhysRevB.97.125204},
   keywords = {DIRAC SEMIMETAL CD3AS2; CRYSTAL-GROWTH},
   language = {eng},
   issn = {2469-9950},
   journal = {Physical Review B},
   title = {Nonuniform carrier density in Cd3As2 evidenced by optical spectroscopy},
   url = {http://dx.doi.org/10.1103/PhysRevB.97.125204},
   volume = {97},
   year = {2018}
}

TY  - JOUR
ID  - 1475037
AU  - Crassee, I. - Martino, E. - Homes, C.C. - Caha, Ondřej - Novák, Jiří - Tuckmantel, P. - Hakl, M. - Nateprov, A. - Arushanov, E. - Gibson, Q.D. - Cava, R.J. - Koohpayeh, S.M. - Arpino, K.E. - McQueen, T.M. - Orlita, M. - Akrap, A.
PY  - 2018
TI  - Nonuniform carrier density in Cd3As2 evidenced by optical spectroscopy
JF  - Physical Review B
VL  - 97
IS  - 12
SP  - "125204-1" - "125204-9"
EP  - "125204-1" - "125204-9"
PB  - The American Physical Society
SN  - 24699950
KW  - DIRAC SEMIMETAL CD3AS2
KW  - CRYSTAL-GROWTH
UR  - http://dx.doi.org/10.1103/PhysRevB.97.125204
N2  - 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.
ER  -

CRASSEE, I.; E. MARTINO; C.C. HOMES; Ondřej CAHA; Jiří NOVÁK; P. TUCKMANTEL; M. HAKL; A. NATEPROV; E. ARUSHANOV; Q.D. GIBSON; R.J. CAVA; S.M. KOOHPAYEH; K.E. ARPINO; T.M. MCQUEEN; M. ORLITA a A. AKRAP. Nonuniform carrier density in Cd3As2 evidenced by optical spectroscopy. \textit{Physical Review B}. College PK: The American Physical Society, 2018, roč.~97, č.~12, s.~''125204-1'' - ''125204-9'', 9 s. ISSN~2469-9950. Dostupné z: https://doi.org/10.1103/PhysRevB.97.125204.

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