Rashba asymmetric topological insulator BiTeCl under compression: equation of state, vibrational features and electronic properties

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F24%3A39921934" target="_blank" >RIV/00216275:25310/24:39921934 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1039/D4TC03027C" target="_blank" >https://doi.org/10.1039/D4TC03027C</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d4tc03027c" target="_blank" >10.1039/d4tc03027c</a>

Result language

angličtina

Original language name

Rashba asymmetric topological insulator BiTeCl under compression: equation of state, vibrational features and electronic properties

Original language description

We present an in-depth characterization of the structural, vibrational, and electronic properties of the Rashba asymmetric topological insulator BiTeCl under high-pressure conditions (10 GPa) from an experimental and theoretical perspective. X-ray diffraction and Raman spectroscopy measurements reveal an incomplete and reversible phase transition to an allegedly less symmetric structure at a pressure above 5 GPa. The experimental equation of state and the axial compressibility of BiTeCl are reported and discussed, as well as a detailed analysis of the evolution of its vibrational features. The electronic band structure of BiTeCl is calculated and its behavior under compression is discussed, with emphasis on the behavior of the band gap and the increase of the Rashba splitting, which is found to be weakly anisotropic. An analysis of the electron density topology indicates that the low-pressure phase of BiTeCl is characterized by intralayer electron-deficient multicenter Bi-Te and Bi-Cl bonds and that interlayer bonds are not purely van der Waals in nature. BiTeCl under high-pressure conditions is characterized. The equation of state, vibrational features, and electronic band structure are discussed, as well as the non-pure van der Waals character of the interlayer bonding of the low-pressure phase.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10300 - Physical sciences

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Materials Chemistry C

ISSN

2050-7526

e-ISSN

2050-7534

Volume of the periodical

12

Issue of the periodical within the volume

46

Country of publishing house

GB - UNITED KINGDOM

Number of pages

16

Pages from-to

"18660–18675"

UT code for WoS article

001333613800001

EID of the result in the Scopus database

2-s2.0-85207369963