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Phase-coherent transport in topological insulator nanocolumns and nanoribbons
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Paper Abstract

The transport properties of topological insulator nanostructures prepared by selective-area molecular beam epitaxy is investigated. For the nanocolumn structures based on Sb2Te3/Bi2Te3-heterostructures pronounced universal conductance fluctuations are observed in the magnetoconductance, indicating phase-coherent transport. Furthermore, angle-dependent measurements indicate that the phase coherent loops are mainly oriented parallel to the substrate plane. Measurements on nanoribbons based on (Bi0.57Sb0.43)2Te3 revealed a resistance dip due to weak antilocalization as well as universal conductance fluctuations. Here, we also found indications, that the phase-coherent loops are predominantly oriented parallel to the quintuple layers forming the topological insulator.

Paper Details

Date Published: 20 September 2018
PDF: 6 pages
Proc. SPIE 10732, Spintronics XI, 107320V (20 September 2018); doi: 10.1117/12.2322720
Show Author Affiliations
Thomas Schäpers, Peter Grünberg Institut 9 (Germany)
Forschungszentrum Jülich GmbH (Germany)
Christian Weyrich, Peter Grünberg Institut 9 (Germany)
Forschungszentrum Jülich GmbH (Germany)
Daniel Rosenbach, Peter Grünberg Institut 9 (Germany)
Forschungszentrum Jülich GmbH (Germany)
Jonas Kölzer, Peter Grünberg Institut 9 (Germany)
Forschungszentrum Jülich GmbH (Germany)
Tobias Schmitt, Peter Grünberg Institut 9 (Germany)
Forschungszentrum Jülich GmbH (Germany)
Peter Schüffelgen, Peter Grünberg Institut 9 (Germany)
Forschungszentrum Jülich GmbH (Germany)
Gregor Mussler, Peter Grünberg Institut 9 (Germany)
Forschungszentrum Jülich GmbH (Germany)
Michael Schleenvoigt, Peter Grünberg Institut 9 (Germany)
Forschungszentrum Jülich GmbH (Germany)
Abdur Rehman Jalil, Peter Grünberg Institut 9 (Germany)
Forschungszentrum Jülich GmbH (Germany)
Hans Lüth, Peter Grünberg Institut 9 (Germany)
Forschungszentrum Jülich GmbH (Germany)
Detlev Grützmacher, Peter Grünberg Institut 9 (Germany)
Forschungszentrum Jülich GmbH (Germany)


Published in SPIE Proceedings Vol. 10732:
Spintronics XI
Henri-Jean Drouhin; Jean-Eric Wegrowe; Manijeh Razeghi; Henri Jaffrès, Editor(s)

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