Multi-band magnetotransport in exfoliated thin films of Cu x Bi2Se3

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F18%3A39912828" target="_blank" >RIV/00216275:25310/18:39912828 - isvavai.cz</a>
Result on the web
<a href="http://iopscience.iop.org/article/10.1088/1361-648X/aab193/meta" target="_blank" >http://iopscience.iop.org/article/10.1088/1361-648X/aab193/meta</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1361-648X/aab193" target="_blank" >10.1088/1361-648X/aab193</a>

Result language
angličtina
Original language name
Multi-band magnetotransport in exfoliated thin films of Cu x Bi2Se3
Original language description
We report magnetotransport studies in thin (<100 nm) exfoliated films of Cu x Bi2Se3 and we detect an unusual electronic transition at low temperatures. Bulk crystals show weak superconductivity with K and a possible electronic phase transition around 200 K. Following exfoliation, superconductivity is supressed and a strongly temperature dependent multi-band conductivity is observed for T < 30 K. This transition between competing conducting channels may be enhanced due to the presence of electronic ordering, and could be affected by the presence of an effective internal stress due to Cu intercalation. By fitting to the weak antilocalisation conductivity correction at low magnetic fields we confirm that the low temperature regime maintains a quantum phase coherence length nm indicating the presence of topologically protected surface states.
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
20501 - Materials engineering

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

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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