Experimental realization of superconducting quantum interference devices with topological insulator junctions

M. Veldhorst; C.G. Molenaar; X.L. Wang; H. Hilgenkamp; Alexander Brinkman

doi:10.1063/1.3686150

Experimental realization of superconducting quantum interference devices with topological insulator junctions

M. Veldhorst, C.G. Molenaar, X.L. Wang, H. Hilgenkamp, Alexander Brinkman

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Abstract

We demonstrate topological insulator (Bi2Te3) dc SQUIDs, based on superconductingNb leads coupled to nano-fabricated Nb-Bi2Te3-Nb Josephson junctions. The high reproducibility and controllability of the fabrication process allow the creation of dc SQUIDs with parameters that are in agreement with design values. Clear critical current modulation of both the junctions and the SQUID with applied magnetic fields have been observed. We show that the SQUIDs have a periodicity in the voltage-flux characteristic of Φ0 of relevance to the ongoing pursuit of realizing interferometers for the detection of Majorana fermions in superconductor—topological insulator structures.

Original language	English
Article number	072602
Pages (from-to)	072602-1-072602-3
Number of pages	3
Journal	Applied physics letters
Volume	100
Issue number	7
DOIs	https://doi.org/10.1063/1.3686150
Publication status	Published - 2012

Keywords

METIS-286920
IR-83582

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10.1063/1.3686150

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title = "Experimental realization of superconducting quantum interference devices with topological insulator junctions",

abstract = "We demonstrate topological insulator (Bi2Te3) dc SQUIDs, based on superconductingNb leads coupled to nano-fabricated Nb-Bi2Te3-Nb Josephson junctions. The high reproducibility and controllability of the fabrication process allow the creation of dc SQUIDs with parameters that are in agreement with design values. Clear critical current modulation of both the junctions and the SQUID with applied magnetic fields have been observed. We show that the SQUIDs have a periodicity in the voltage-flux characteristic of Φ0 of relevance to the ongoing pursuit of realizing interferometers for the detection of Majorana fermions in superconductor—topological insulator structures.",

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author = "M. Veldhorst and C.G. Molenaar and X.L. Wang and H. Hilgenkamp and Alexander Brinkman",

year = "2012",

doi = "10.1063/1.3686150",

language = "English",

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pages = "072602--1--072602--3",

journal = "Applied physics letters",

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publisher = "American Institute of Physics",

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T1 - Experimental realization of superconducting quantum interference devices with topological insulator junctions

AU - Veldhorst, M.

AU - Molenaar, C.G.

AU - Wang, X.L.

AU - Hilgenkamp, H.

AU - Brinkman, Alexander

PY - 2012

Y1 - 2012

N2 - We demonstrate topological insulator (Bi2Te3) dc SQUIDs, based on superconductingNb leads coupled to nano-fabricated Nb-Bi2Te3-Nb Josephson junctions. The high reproducibility and controllability of the fabrication process allow the creation of dc SQUIDs with parameters that are in agreement with design values. Clear critical current modulation of both the junctions and the SQUID with applied magnetic fields have been observed. We show that the SQUIDs have a periodicity in the voltage-flux characteristic of Φ0 of relevance to the ongoing pursuit of realizing interferometers for the detection of Majorana fermions in superconductor—topological insulator structures.

AB - We demonstrate topological insulator (Bi2Te3) dc SQUIDs, based on superconductingNb leads coupled to nano-fabricated Nb-Bi2Te3-Nb Josephson junctions. The high reproducibility and controllability of the fabrication process allow the creation of dc SQUIDs with parameters that are in agreement with design values. Clear critical current modulation of both the junctions and the SQUID with applied magnetic fields have been observed. We show that the SQUIDs have a periodicity in the voltage-flux characteristic of Φ0 of relevance to the ongoing pursuit of realizing interferometers for the detection of Majorana fermions in superconductor—topological insulator structures.

KW - METIS-286920

KW - IR-83582

U2 - 10.1063/1.3686150

DO - 10.1063/1.3686150

M3 - Article

SN - 0003-6951

VL - 100

SP - 072602-1-072602-3

JO - Applied physics letters

JF - Applied physics letters

IS - 7

M1 - 072602

ER -

Experimental realization of superconducting quantum interference devices with topological insulator junctions

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