Krieg, Janina ; Chen, Chaoyu ; Avila, José ; Zhang, Zeying ; Sigle, Wilfried ; Zhang, Hongbin ; Trautmann, Christina ; Asensio, Maria Carmen ; Toimil-Molares, Maria Eugenia (2016)
Exploring the Electronic Structure and Chemical Homogeneity of Individual Bi2Te3 Nanowires by Nano-Angle-Resolved Photoemission Spectroscopy.
In: Nano Letters, 16 (7)
doi: 10.1021/acs.nanolett.6b00400
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Due to their high surface-to-volume ratio, cylindrical Bi2Te3 nanowires are employed as model systems to investigate the chemistry and the unique conductive surface states of topological insulator nanomaterials. We report on nanoangle-resolved photoemission spectroscopy (nano-ARPES) characterization of individual cylindrical Bi2Te3 nanowires with a diameter of 100 nm. The nanowires are synthesized by electrochemical deposition inside channels of ion-track etched polymer membranes. Core level spectra recorded with submicron resolution indicate a homogeneous chemical composition along individual nanowires, while nano-ARPES intensity maps reveal the valence band structure at the single nanowire level. First-principles electronic structure calculations for chosen crystallographic orientations are in good agreement with those revealed by nano-ARPES. The successful application of nano-ARPES on single one-dimensional nanostructures constitutes a new avenue to achieve a better understanding of the electronic structure of topological insulator nanomaterials.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2016 |
| Autor(en): | Krieg, Janina ; Chen, Chaoyu ; Avila, José ; Zhang, Zeying ; Sigle, Wilfried ; Zhang, Hongbin ; Trautmann, Christina ; Asensio, Maria Carmen ; Toimil-Molares, Maria Eugenia |
| Art des Eintrags: | Bibliographie |
| Titel: | Exploring the Electronic Structure and Chemical Homogeneity of Individual Bi2Te3 Nanowires by Nano-Angle-Resolved Photoemission Spectroscopy |
| Sprache: | Englisch |
| Publikationsjahr: | 17 Juni 2016 |
| Verlag: | American Chemical Society |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Nano Letters |
| Jahrgang/Volume einer Zeitschrift: | 16 |
| (Heft-)Nummer: | 7 |
| DOI: | 10.1021/acs.nanolett.6b00400 |
| URL / URN: | https://doi.org/10.1021/acs.nanolett.6b00400 |
| Kurzbeschreibung (Abstract): | Due to their high surface-to-volume ratio, cylindrical Bi2Te3 nanowires are employed as model systems to investigate the chemistry and the unique conductive surface states of topological insulator nanomaterials. We report on nanoangle-resolved photoemission spectroscopy (nano-ARPES) characterization of individual cylindrical Bi2Te3 nanowires with a diameter of 100 nm. The nanowires are synthesized by electrochemical deposition inside channels of ion-track etched polymer membranes. Core level spectra recorded with submicron resolution indicate a homogeneous chemical composition along individual nanowires, while nano-ARPES intensity maps reveal the valence band structure at the single nanowire level. First-principles electronic structure calculations for chosen crystallographic orientations are in good agreement with those revealed by nano-ARPES. The successful application of nano-ARPES on single one-dimensional nanostructures constitutes a new avenue to achieve a better understanding of the electronic structure of topological insulator nanomaterials. |
| Freie Schlagworte: | Bi2Te3, electrochemical Deposition, ion track technology, nanoangle-resolved photoemission spectroscopy (nano-ARPES), nanowire, topological insulator |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Ionenstrahlmodifizierte Materialien 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Theorie magnetischer Materialien |
| Hinterlegungsdatum: | 29 Dez 2017 09:23 |
| Letzte Änderung: | 02 Jan 2018 13:26 |
| PPN: | |
| Sponsoren: | This work was supported by the SOLEIL synchrotron under the proposal 20130543., J.K. and M.E.T.-M. acknowledge support by the DFG Priority Program SPP 1666., J.K. acknowledges support by the graduate school HGS-HIRe., Z.Z. is funded by the International Graduate Exchange Program of Beijing Institute of Technology. |
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