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Conductance oscillations of core-shell nanowires in transversal magnetic fields

Conductance oscillations of core-shell nanowires in transversal magnetic fields

Title: Conductance oscillations of core-shell nanowires in transversal magnetic fields
Author: Gudmundsson, Vidar   orcid.org/0000-0001-8939-3522
Manolescu, Andrei   orcid.org/0000-0002-0713-4664
Nemnes, George Alexandru   orcid.org/0000-0002-8500-4953
Sitek, Anna   orcid.org/0000-0002-0602-1959
Erlingsson, Sigurður Ingi
Rosdahl, Tómas   orcid.org/0000-0001-5126-6413
Date: 2016-05-31
Language: English
Scope: 1-6
University/Institute: Háskólinn í Reykjavík
Reykjavik University
Háskóli Íslands
University of Iceland
School: Tækni- og verkfræðideild (HR)
School of Science and Engineering (RU)
Verkfræði- og náttúruvísindasvið (HÍ)
School of Engineering and Natural Sciences (UI)
Department: Raunvísindastofnun (HÍ)
Science Institute (UI)
Series: Physical Review B;93(20)
ISSN: 2469-9950
2469-9969 (eISSN)
DOI: 10.1103/PhysRevB.93.205445
Subject: Quantum wells; Tubes; Nanowires; Heterostructures; Nanóvírar; Raffræði; Hálfleiðarar
URI: https://hdl.handle.net/20.500.11815/851

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Manolescu, A., Nemnes, G. A., Sitek, A., Rosdahl, T. O., Erlingsson, S. I., & Gudmundsson, V. (2016). Conductance oscillations of core-shell nanowires in transversal magnetic fields. Physical Review B, 93(20), 205445. doi.org/10.1103/PhysRevB.93.205445


We analyze theoretically electronic transport through a core-shell nanowire in the presence of a transversal magnetic field. We calculate the conductance for a variable coupling between the nanowire and the attached leads and show how the snaking states, which are low-energy states localized along the lines of the vanishing radial component of the magnetic field, manifest their existence. In the strong-coupling regime they induce flux periodic, Aharonov-Bohm-like, conductance oscillations, which, by decreasing the coupling to the leads, evolve into well-resolved peaks. The flux periodic oscillations arise due to interference of the snaking states, which is a consequence of backscattering at either the contacts with leads or magnetic or potential barriers in the wire.


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