BiTeCl and BiTeBr: A comparative high-pressure optical study

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F17%3A10367256" target="_blank" >RIV/00216208:11320/17:10367256 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1103/PhysRevB.95.045201" target="_blank" >http://dx.doi.org/10.1103/PhysRevB.95.045201</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevB.95.045201" target="_blank" >10.1103/PhysRevB.95.045201</a>

Jazyk výsledku

angličtina

Název v původním jazyce

BiTeCl and BiTeBr: A comparative high-pressure optical study

Popis výsledku v původním jazyce

We here report a detailed high-pressure infrared transmission study of BiTeCl and BiTeBr. We follow the evolution of two band transitions: the optical excitation beta between two Rashba-split conduction bands, and the absorption. across the band gap. In the low-pressure range, p &lt; 4 GPa, for both compounds beta is approximately constant with pressure and. decreases, in agreement with band structure calculations. In BiTeCl, a clear pressure-induced phase transition at 6 GPa leads to a different ground state. For BiTeBr, the pressure evolution is more subtle, and we discuss the possibility of closing and reopening of the band gap. Our data is consistent with a potential Weyl phase in BiTeBr at 5-6 GPa, followed by the onset of a structural phase transition above 7 GPa.

Název v anglickém jazyce

BiTeCl and BiTeBr: A comparative high-pressure optical study

Popis výsledku anglicky

We here report a detailed high-pressure infrared transmission study of BiTeCl and BiTeBr. We follow the evolution of two band transitions: the optical excitation beta between two Rashba-split conduction bands, and the absorption. across the band gap. In the low-pressure range, p &lt; 4 GPa, for both compounds beta is approximately constant with pressure and. decreases, in agreement with band structure calculations. In BiTeCl, a clear pressure-induced phase transition at 6 GPa leads to a different ground state. For BiTeBr, the pressure evolution is more subtle, and we discuss the possibility of closing and reopening of the band gap. Our data is consistent with a potential Weyl phase in BiTeBr at 5-6 GPa, followed by the onset of a structural phase transition above 7 GPa.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Physical Review B

ISSN

2469-9950

e-ISSN

—

Svazek periodika

95

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

5

Strana od-do

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Kód UT WoS článku

000391855500006

EID výsledku v databázi Scopus

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