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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10300 - Physical sciences

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Journal of Materials Chemistry C

ISSN

2050-7526

e-ISSN

2050-7534

Svazek periodika

12

Číslo periodika v rámci svazku

46

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

16

Strana od-do

"18660–18675"

Kód UT WoS článku

001333613800001

EID výsledku v databázi Scopus

2-s2.0-85207369963