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Experimental realization of superconducting quantum interference devices with topological insulator junctions

Journal Article


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Abstract


  • We demonstrate topological insulator (Bi2Te3) dc SQUIDs, based on superconducting Nb 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 U0 of relevance to the ongoing pursuit of realizing

    interferometers for the detection of Majorana fermions in superconductor—topological insulator

    structures.

UOW Authors


  •   Veldhorst, Menno (external author)
  •   Molenaar, C G. (external author)
  •   Wang, Xiaolin
  •   Hilgenkamp, Hans (external author)
  •   Brinkman, A (external author)

Publication Date


  • 2012

Citation


  • Veldhorst, M., Molenaar, C. G., Wang, X., Hilgenkamp, H. & Brinkman, A. (2012). Experimental realization of superconducting quantum interference devices with topological insulator junctions. Applied Physics Letters, 100 (7), 072602-1-072602-3.

Scopus Eid


  • 2-s2.0-84863142023

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=8158&context=engpapers

Ro Metadata Url


  • http://ro.uow.edu.au/engpapers/5226

Has Global Citation Frequency


Start Page


  • 072602-1

End Page


  • 072602-3

Volume


  • 100

Issue


  • 7

Place Of Publication


  • United States

Abstract


  • We demonstrate topological insulator (Bi2Te3) dc SQUIDs, based on superconducting Nb 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 U0 of relevance to the ongoing pursuit of realizing

    interferometers for the detection of Majorana fermions in superconductor—topological insulator

    structures.

UOW Authors


  •   Veldhorst, Menno (external author)
  •   Molenaar, C G. (external author)
  •   Wang, Xiaolin
  •   Hilgenkamp, Hans (external author)
  •   Brinkman, A (external author)

Publication Date


  • 2012

Citation


  • Veldhorst, M., Molenaar, C. G., Wang, X., Hilgenkamp, H. & Brinkman, A. (2012). Experimental realization of superconducting quantum interference devices with topological insulator junctions. Applied Physics Letters, 100 (7), 072602-1-072602-3.

Scopus Eid


  • 2-s2.0-84863142023

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=8158&context=engpapers

Ro Metadata Url


  • http://ro.uow.edu.au/engpapers/5226

Has Global Citation Frequency


Start Page


  • 072602-1

End Page


  • 072602-3

Volume


  • 100

Issue


  • 7

Place Of Publication


  • United States