Bulletin of the American Physical Society
APS March Meeting 2020
Volume 65, Number 1
Monday–Friday, March 2–6, 2020; Denver, Colorado
Session R49: Superconducting Proximity Effect and Josephson Junctions IV
8:00 AM–10:36 AM,
Thursday, March 5, 2020
Room: Mile High Ballroom 1B
Sponsoring
Unit:
DCMP
Chair: Thomas Bullard, UES, Inc.
Abstract: R49.00001 : Search for Majorana bound states in niobium-Bi2Se3-niobium arrays and junctions*
Presenter:
Xiangyu Song
(University of Illinois at Urbana-Champaign)
Authors:
Xiangyu Song
(University of Illinois at Urbana-Champaign)
Yang Bai
(University of Illinois at Urbana-Champaign)
Guang Yue
(University of Illinois at Urbana-Champaign)
James N Eckstein
(University of Illinois at Urbana-Champaign)
Dale J Van Harlingen
(University of Illinois at Urbana-Champaign)
Alexey Bezryadin
(University of Illinois at Urbana-Champaign)
We have fabricated and measured lateral superconductor-topological insulator-superconductor (S-TI-S) single junctions, square arrays, transmon geometries, and other geometries to look for the signatures of MBS.
Our experiments include Fraunhofer patterns on such patterns, which show some signature kinks at fields less then flux quantum, lifted nodes, and missing critical current maxima. We will discuss extensive measurement performed on niobium-Bi2Se3 hybrid structures in microwave resonators, which include kinetic inductance vs. magnetic field and the quality factor vs. magnetic field measurements. The possibility of making a transmon qubit with a topological insulator film will be discussed.
*The work is supported by NSF-DMR 1836710 grant and by Army Research Office under agreement W911NF1910067.
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