Temperature dependence of the energy band gap in ZrTe5: Implications for the topological phase

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F23%3A10473188" target="_blank" >RIV/00216208:11320/23:10473188 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=32DeAIDHgM" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=32DeAIDHgM</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.107.L041202" target="_blank" >10.1103/PhysRevB.107.L041202</a>

Result language
angličtina
Original language name
Temperature dependence of the energy band gap in ZrTe5: Implications for the topological phase
Original language description
Using Landau-level spectroscopy, we determine the temperature dependence of the energy band gap in zirconium pentatelluride (ZrTe(5)). We find that the band gap reaches E(g) = (5 +/- 1) meV at low temperatures and increases monotonically when the temperature is raised. This implies that ZrTe(5) is a weak topological insulator, with noninverted ordering of electronic bands in the center of the Brillouin zone. Our magnetotransport experiments performed in parallel show that the resistivity anomaly in ZrTe(5) is not connected with the temperature dependence of the band gap.
Czech name
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Czech description
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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.)

Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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