Bulletin of the American Physical Society
2023 APS March Meeting
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session N44: Topological Superconductivity: Proximity and Interface Effects and Low-dimensional Systems
11:30 AM–2:30 PM,
Wednesday, March 8, 2023
Room: Room 316
Sponsoring
Unit:
DMP
Chair: Srijit Goswami; Lia Krusin-Elbaum
Abstract: N44.00013 : Dependence of topological signatures to junction geometry in planar Josephson junctions*
2:18 PM–2:30 PM
Presenter:
PENG YU
(New York University (NYU))
Authors:
PENG YU
(New York University (NYU))
Neda Lotfizadeh
(New York University)
William F Schiela
(New York University (NYU))
Bassel H Elfeky
(New York University)
Mehdi Hatefipour
(New York Universiry)
William M Strickland
(New York University (NYU))
Ido Levy
(New York University)
Mohammad Farzaneh
(NYU)
Javad Shabani
(New York University (NYU))
Planar Josephson junction based on two-dimensional electron gas (2DEG) is a promising platform for the study of topological superconductivity and Majorana zero modes. Here we fabricate planar Josephson junctions using epitaxial aluminum on semiconducting indium arsenide quantum wells. By adding two tunneling probes at the ends of the junction, we are capable of studying both supercurrent crossing the junction and tunneling spectroscopy at the ends of the junction. The supercurrent in our junctions is known to have a non-monotonic behavior with a proper in-plane magnetic field [1]. We further explore the supercurrent non-monotonic behavior in junctions with various geometries (superconducting lead width, length and width of the junction). For the tunneling spectroscopy, we first optimize the quantum point contact (QPC) by testing different dielectrics and gate configurations. With the optimized QPC, we systematically study the low-energy states probed at the ends of the junction that could be used to study end-to-end correlated states.
[1] M. Dartiailh, et. al, PRL 126, 036802 (2021).
*This work is supported by the DARPA TEE award No. DP18AP900007.
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700