Unknown

Dataset Information

0

Robustness of a Topologically Protected Surface State in a Sb2Te2Se Single Crystal.

ABSTRACT: A topological insulator (TI) is a quantum material in a new class with attractive properties for physical and technological applications. Here we derive the electronic structure of highly crystalline Sb2Te2Se single crystals studied with angle-resolved photoemission spectra. The result of band mapping reveals that the Sb2Te2Se compound behaves as a p-type semiconductor and has an isolated Dirac cone of a topological surface state, which is highly favored for spintronic and thermoelectric devices because of the dissipation-less surface state and the decreased scattering from bulk bands. More importantly, the topological surface state and doping level in Sb2Te2Se are difficult to alter for a cleaved surface exposed to air; the robustness of the topological surface state defined in our data indicates that this Sb2Te2Se compound has a great potential for future atmospheric applications.

SUBMITTER: Lee CK 

PROVIDER: S-EPMC5114659 | biostudies-literature | 2016 Nov

REPOSITORIES: biostudies-literature

Json Xml
altmetric image

Publications

Robustness of a Topologically Protected Surface State in a Sb<sub>2</sub>Te<sub>2</sub>Se Single Crystal.

Lee Chao-Kuei CK   Cheng Cheng-Maw CM   Weng Shih-Chang SC   Chen Wei-Chuan WC   Tsuei Ku-Ding KD   Yu Shih-Hsun SH   Chou Mitch Ming-Chi MM   Chang Ching-Wen CW   Tu Li-Wei LW   Yang Hung-Duen HD   Luo Chih-Wei CW   Gospodinov Marin M MM  

Scientific reports 20161118

A topological insulator (TI) is a quantum material in a new class with attractive properties for physical and technological applications. Here we derive the electronic structure of highly crystalline Sb<sub>2</sub>Te<sub>2</sub>Se single crystals studied with angle-resolved photoemission spectra. The result of band mapping reveals that the Sb<sub>2</sub>Te<sub>2</sub>Se compound behaves as a p-type semiconductor and has an isolated Dirac cone of a topological surface state, which is highly favor  ...[more]

Similar Datasets

Unknown Terahertz conductivity of topological surface states in Bi₁.₅Sb₀.₅Te₁.₈Se₁.₂.
| S-EPMC3865466 | biostudies-other
Unknown Surface State-Dominated Photoconduction and THz Generation in Topological Bi<sub>2</sub>Te<sub>2</sub>Se Nanowires.
| S-EPMC5338589 | biostudies-literature
Unknown Enhancement in surface mobility and quantum transport of Bi<sub>2-x</sub>Sb<sub>x</sub>Te<sub>3-y</sub>Se<sub>y</sub> topological insulator by controlling the crystal growth conditions.
| S-EPMC6251917 | biostudies-literature
Unknown Suppressed electronic contribution in thermal conductivity of Ge<sub>2</sub>Sb<sub>2</sub>Se<sub>4</sub>Te.
| S-EPMC8664948 | biostudies-literature
Unknown Interface Analysis of MOCVD Grown GeTe/Sb<sub>2</sub>Te<sub>3</sub> and Ge-Rich Ge-Sb-Te/Sb<sub>2</sub>Te<sub>3</sub> Core-Shell Nanowires.
| S-EPMC9146787 | biostudies-literature
Unknown Possible flat band bending of the Bi<sub>1.5</sub>Sb<sub>0.5</sub>Te<sub>1.7</sub>Se<sub>1.3</sub> crystal cleaved in an ambient air probed by terahertz emission spectroscopy.
| S-EPMC5090861 | biostudies-literature
Unknown Prominent metallic surface conduction and the singular magnetic response of topological Dirac fermion in three-dimensional topological insulator Bi<sub>1.5</sub>Sb<sub>0.5</sub>Te<sub>1.7</sub>Se<sub>1.3</sub>.
| S-EPMC5501823 | biostudies-literature
Unknown Topological Surface-Dominated Spintronic THz Emission in Topologically Nontrivial Bi<sub>1-</sub> <sub>x</sub> Sb<sub>x</sub> Films.
| S-EPMC9313944 | biostudies-literature
Unknown A facile energy-saving route of fabricating thermoelectric Sb<sub>2</sub>Te<sub>3</sub>-Te nanocomposites and nanosized Te.
| S-EPMC6227969 | biostudies-literature
Unknown Sb<sub>2</sub>Te<sub>3</sub> nanoparticle-containing single-walled carbon nanotube films coated with Sb<sub>2</sub>Te<sub>3</sub> electrodeposited layers for thermoelectric applications.
| S-EPMC10082793 | biostudies-literature