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Synthesis of superconductor-topological insulator nanoribbon heterostructures

Abstract:
Superconductors in proximity to topological insulators (TIs) have the potential to unlock exotic quantum phenomena, such as Majorana fermions. Quasi-one dimensional structures are particularly suited to host these quantum states. Despite the growth of TI nanostructures being relatively straightforward, the in-situ synthesis of superconductor-TI structures has been challenging. Here, we present a systematic study of the growth of the s-wave superconductor Sn on the TI Bi2Te3 by physical vapor transport. If Sn does not enter the Bi2Te3 lattice as a dopant, two types of structures are formed: Sn nanoparticles, that cover Bi2Te3 plates and belts in a cloud-like shape, and thin Sn layers on Bi2Te3 plates, that appear in puddle-like recessions. These heterostructures have potential applications as novel quantum devices.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1142/S1793292017500953

Authors


More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Condensed Matter Physics
Role:
Author
More by this author
Institution:
University of Oxford
Oxford college:
Christ Church
Role:
Author


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Grant:
Seventh Framework Program under Grant Agreement 312483 – ESTEEM2 (Integrated Infrastructure Initiative I3) and transnational access to MPI-FKF (WP13)


Publisher:
World Scientific Publishing
Journal:
Nano More from this journal
Volume:
12
Issue:
8
Article number:
1750095
Publication date:
2017-08-03
Acceptance date:
2017-06-02
DOI:
EISSN:
1793-7094
ISSN:
1793-2920


Keywords:
Pubs id:
pubs:698195
UUID:
uuid:a871d49e-5f32-4471-8384-47b241941bd5
Local pid:
pubs:698195
Source identifiers:
698195
Deposit date:
2017-06-02

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