# Geometric dependence of Nb-Bi2Te3-Nb topological Josephson junction transport parameters

C.G. Molenaar, Denise Pèilíng Leusink, X.L. Wang, Alexander Brinkman

4 Citations (Scopus)

### Abstract

Part of Special issue on Topological Superconductors Superconductor-topological insulator–superconductor Josephson junctions have been fabricated in order to study the width dependence of the critical current, normal state resistance and flux periodicity of the critical current modulation in an external field. Previous literature reports suggest anomalous scaling in topological junctions due to the presence of Majorana bound states. However, for most realized devices, one would expect that trivial $2\pi$-periodic Andreev levels dominate transport. We also observe anomalous scaling behaviour of junction parameters, but the scaling can be well explained by mere geometric effects, such as the parallel bulk conductivity shunt and flux focusing.
Original language Undefined 104003 - 6 Superconductor science and technology 27 10 https://doi.org/10.1088/0953-2048/27/10/104003 Published - 2014

• IR-94526
• METIS-309410

### Cite this

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title = "Geometric dependence of Nb-Bi2Te3-Nb topological Josephson junction transport parameters",
abstract = "Part of Special issue on Topological Superconductors Superconductor-topological insulator–superconductor Josephson junctions have been fabricated in order to study the width dependence of the critical current, normal state resistance and flux periodicity of the critical current modulation in an external field. Previous literature reports suggest anomalous scaling in topological junctions due to the presence of Majorana bound states. However, for most realized devices, one would expect that trivial $2\pi$-periodic Andreev levels dominate transport. We also observe anomalous scaling behaviour of junction parameters, but the scaling can be well explained by mere geometric effects, such as the parallel bulk conductivity shunt and flux focusing.",
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Geometric dependence of Nb-Bi2Te3-Nb topological Josephson junction transport parameters. / Molenaar, C.G.; Leusink, Denise Pèilíng; Wang, X.L.; Brinkman, Alexander.

In: Superconductor science and technology, Vol. 27, No. 10, 104003, 2014, p. -.

TY - JOUR

T1 - Geometric dependence of Nb-Bi2Te3-Nb topological Josephson junction transport parameters

AU - Molenaar, C.G.

AU - Leusink, Denise Pèilíng

AU - Wang, X.L.

AU - Brinkman, Alexander

PY - 2014

Y1 - 2014

N2 - Part of Special issue on Topological Superconductors Superconductor-topological insulator–superconductor Josephson junctions have been fabricated in order to study the width dependence of the critical current, normal state resistance and flux periodicity of the critical current modulation in an external field. Previous literature reports suggest anomalous scaling in topological junctions due to the presence of Majorana bound states. However, for most realized devices, one would expect that trivial $2\pi$-periodic Andreev levels dominate transport. We also observe anomalous scaling behaviour of junction parameters, but the scaling can be well explained by mere geometric effects, such as the parallel bulk conductivity shunt and flux focusing.

AB - Part of Special issue on Topological Superconductors Superconductor-topological insulator–superconductor Josephson junctions have been fabricated in order to study the width dependence of the critical current, normal state resistance and flux periodicity of the critical current modulation in an external field. Previous literature reports suggest anomalous scaling in topological junctions due to the presence of Majorana bound states. However, for most realized devices, one would expect that trivial $2\pi$-periodic Andreev levels dominate transport. We also observe anomalous scaling behaviour of junction parameters, but the scaling can be well explained by mere geometric effects, such as the parallel bulk conductivity shunt and flux focusing.

KW - IR-94526

KW - METIS-309410

U2 - 10.1088/0953-2048/27/10/104003

DO - 10.1088/0953-2048/27/10/104003

M3 - Article

VL - 27

SP - -

JO - Superconductor science and technology

JF - Superconductor science and technology

SN - 0953-2048

IS - 10

M1 - 104003

ER -