Andreev Spectroscopy in Three-Terminal Hybrid Nanostructure

• Authors: G. Michałek , B. Bułka , M. Urbaniak , T. Domański , K. Wysokiński
• Languages of publication: EN

Abstracts

EN

We consider a hybrid three-terminal structure consisting of a quantum dot coupled to three leads, two normal and one superconducting. The current flowing between one of the normal and the superconducting electrodes induces voltage in the other normal (floating) electrode. The value of the induced voltage depends on the position of the Andreev levels in the quantum dot and is a measure of the interplay between the electron transfer and the subgap anomalous reflection processes. When the crossed (i.e. non-local) Andreev reflections dominate the induced potential in the normal electrode becomes negative. This situation occurs for the relatively strong coupling to the superconducting electrode and only outside the Coulomb blockade region. Taking the superconducting electrode as the voltage probe one gets additional information on competition of injected carriers.

Keywords

EN

73.63.Kv; 73.23.Hk; 74.45.+c

Discipline

• 73.23.Hk: Coulomb blockade; single-electron tunneling
• 74.45.+c: Proximity effects; Andreev reflection; SN and SNS junctions
• 73.63.Kv: Quantum dots

• Journal: Acta Physica Polonica A
• Year: 2015
• Volume: 127
• Issue: 2
• Pages: 293-295

Dates

published

2015-02

Contributors

author

G. Michałek

• Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland

author

B. Bułka

• Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland

author

M. Urbaniak

• Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland

author

T. Domański

• Institute of Physics, M. Curie-Skłodowska University, pl. M. Curie-Skłodowskiej 1, 20-031 Lublin, Poland

author

K. Wysokiński

• Institute of Physics, M. Curie-Skłodowska University, pl. M. Curie-Skłodowskiej 1, 20-031 Lublin, Poland

References

• [1] A. Martín-Rodero, A. Levy Yeyati, Adv. Phys. 60, 899 (2011), doi: 10.1080/00018732.2011.624266
• [2] G. Michałek, B.R. Bułka, T. Domański, K.I. Wysokiński, Phys. Rev. B 88, 155425 (2013), doi: 10.1103/PhysRevB.88.155425
• [3] H. Haug, A.-P. Jauho, Quantum Kinetics in Transport and Optics of Semiconductors, 2nd ed., Springer Verlag, Berlin 2008, doi: 10.1007/978-3-540-73564-9
• [4] J. Hubbard, Proc. R. Soc. Lond. A 281, 401 (1964), doi: 10.1098/rspa.1964.0190
• [5] G. Michałek, B.R. Bułka, M. Urbaniak, T. Domański, K.I. Wysokiński, to be published

Identifiers

DOI

10.12693/APhysPolA.127.293