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Title: Superconducting contact and quantum interference between two-dimensional van der Waals and three-dimensional conventional superconductors

Abstract

Atomically thin two-dimensional (2D) transition-metal dichalcogenide (TMD) superconductors enable uniform, flat, and clean van der Waals tunneling interfaces, motivating their integration into conventional superconducting circuits. However, fully superconducting contact must be made between the 2D material and three-dimensional (3D) superconductors to employ the standard microwave drive and readout of qubits in such circuits. We present a method for creating zero-resistance contacts between 2D NbSe2 and 3D aluminum that behave as Josephson junctions (JJs) with large effective areas compared to 3D-3D JJs. The devices formed from 2D TMD superconductors are strongly influenced by the geometry of the flakes themselves as well as the placement of the contacts to bulk 3D superconducting leads. We present a model for the supercurrent flow in a 2D-3D superconducting structure by a numerical solution of the Ginzburg-Landau equations and find good agreement with experiment. Finally, these results demonstrate a crucial step towards a new generation of hybrid superconducting quantum circuits.

Authors:
ORCiD logo [1]; ORCiD logo [1];  [2];  [3];  [3]; ORCiD logo [2];  [2];  [2];  [1]
  1. Carnegie Mellon Univ., Pittsburgh, PA (United States)
  2. Univ. of Pittsburgh, PA (United States)
  3. National Institute for Materials Science (NIMS), Tsukuba (Japan)
Publication Date:
Research Org.:
Carnegie Mellon Univ., Pittsburgh, PA (United States)
Sponsoring Org.:
USDOE Office of Science (SC); The Pittsburgh Foundation; Carnegie Mellon University
OSTI Identifier:
1852505
Grant/Contract Number:  
SC0018115; 1743717; KA2016-85226; MCF-677785
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Materials
Additional Journal Information:
Journal Volume: 5; Journal Issue: 1; Journal ID: ISSN 2475-9953
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; materials science; Josephson effect; superconductivity; interfaces; transition metal dischalcogenides

Citation Formats

Sinko, Michael R., de la Barrera, Sergio C., Lanes, Olivia, Watanabe, Kenji, Taniguchi, Takashi, Tan, Susheng, Pekker, David, Hatridge, Michael, and Hunt, Benjamin M. Superconducting contact and quantum interference between two-dimensional van der Waals and three-dimensional conventional superconductors. United States: N. p., 2021. Web. doi:10.1103/physrevmaterials.5.014001.
Sinko, Michael R., de la Barrera, Sergio C., Lanes, Olivia, Watanabe, Kenji, Taniguchi, Takashi, Tan, Susheng, Pekker, David, Hatridge, Michael, & Hunt, Benjamin M. Superconducting contact and quantum interference between two-dimensional van der Waals and three-dimensional conventional superconductors. United States. https://doi.org/10.1103/physrevmaterials.5.014001
Sinko, Michael R., de la Barrera, Sergio C., Lanes, Olivia, Watanabe, Kenji, Taniguchi, Takashi, Tan, Susheng, Pekker, David, Hatridge, Michael, and Hunt, Benjamin M. Tue . "Superconducting contact and quantum interference between two-dimensional van der Waals and three-dimensional conventional superconductors". United States. https://doi.org/10.1103/physrevmaterials.5.014001. https://www.osti.gov/servlets/purl/1852505.
@article{osti_1852505,
title = {Superconducting contact and quantum interference between two-dimensional van der Waals and three-dimensional conventional superconductors},
author = {Sinko, Michael R. and de la Barrera, Sergio C. and Lanes, Olivia and Watanabe, Kenji and Taniguchi, Takashi and Tan, Susheng and Pekker, David and Hatridge, Michael and Hunt, Benjamin M.},
abstractNote = {Atomically thin two-dimensional (2D) transition-metal dichalcogenide (TMD) superconductors enable uniform, flat, and clean van der Waals tunneling interfaces, motivating their integration into conventional superconducting circuits. However, fully superconducting contact must be made between the 2D material and three-dimensional (3D) superconductors to employ the standard microwave drive and readout of qubits in such circuits. We present a method for creating zero-resistance contacts between 2D NbSe2 and 3D aluminum that behave as Josephson junctions (JJs) with large effective areas compared to 3D-3D JJs. The devices formed from 2D TMD superconductors are strongly influenced by the geometry of the flakes themselves as well as the placement of the contacts to bulk 3D superconducting leads. We present a model for the supercurrent flow in a 2D-3D superconducting structure by a numerical solution of the Ginzburg-Landau equations and find good agreement with experiment. Finally, these results demonstrate a crucial step towards a new generation of hybrid superconducting quantum circuits.},
doi = {10.1103/physrevmaterials.5.014001},
journal = {Physical Review Materials},
number = 1,
volume = 5,
place = {United States},
year = {Tue Jan 12 00:00:00 EST 2021},
month = {Tue Jan 12 00:00:00 EST 2021}
}

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