Fe.sub.x./sub.Bi.sub.2./sub.Se.sub.3./sub. superconductivity, dimensional transport, and high electron mobility are associated with the natural nanostructure of Bi.sub.2./sub.Se.sub.3./sub. single crystals

0579135 - FZÚ 2024 RIV US eng J - Journal Article
Zich, J. - Míšek, Martin - Holý, V. - Carva, K. - Čížek, J. - Navrátil, Jiří - Čermák, P. - Knotek, P. - Čermák Štraitrová, K. - Cichoň, Stanislav - Hejtmánek, Jiří - Jirák, Zdeněk - Drašar, Č.
Fe_xBi₂Se₃ superconductivity, dimensional transport, and high electron mobility are associated with the natural nanostructure of Bi₂Se₃ single crystals.
Physical Review B. Roč. 108, č. 12 (2023), č. článku 125308. ISSN 2469-9950. E-ISSN 2469-9969
R&D Projects: GA MŠMT(CZ) LM2018096; GA ČR GA19-16315S
Institutional support: RVO:68378271
Keywords : 1st-principles calculations * topological insulator * symmetry-breaking * state
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 3.7, year: 2022
Method of publishing: Limited access
https://doi.org/10.1103/PhysRevB.108.125308

Bi2Se3 is a narrow gap semiconductor that has been studied comprehensively over a long period. Its thorough exploration as one of the best thermoelectric (TE) materials started in the 1950s [1]. Later, at the turn of the millennium, magnetic order induced by transition metals attracted much attention in the search for diluted magnetic semiconductors [2]. Its further rediscovery was related to nontrivial topology in electronic states at interfaces. The fact that it belongs to threedimensional (3D) topological insulators with one distinctive Dirac cone within the surface states triggered an enormous research effort [3,4]. This was accompanied by a wide variety of doping studies aimed at revealing the interference of magnetic/nonmagnetic impurities with topological surface states (TSS) in general. Within these studies, a couple of dopants proved to induce an unconventional (nematic) superconductivity (SC) [5–7].

Permanent Link: https://hdl.handle.net/11104/0348000