Source abstract
Abstract
Inherent properties of superconducting Bi 2 Sr 2 CaCu 2 O 8+ x films, such as the high superconducting transition temperature T c, efficient Josephson coupling between neighboring CuO layers, and fast quasiparticle relaxation dynamics, make them a promising platform for advances in quantum computing and communication technologies. However, preserving two-dimensional superconductivity during device fabrication is an outstanding experimental challenge because of the fast degradation of the superconducting properties of two-dimensional flakes when they are exposed to moisture, organic solvents, and heat. Herein, to realize superconducting devices utilizing two-dimensional (2D) superconducting films, we develop a novel fabrication technique relying on the cryogenic dry transfer of printable circuits embedded into a silicon nitride membrane. This approach separates the circuit fabrication stage requiring chemically reactive substances and ionizing physical processes from the creation of the thin superconducting structures. Apart from providing electrical contacts in a single transfer step, the membrane encapsulates the surface of the crystal, shielding it from the environment. The fabricated atomically thin Bi 2 Sr 2 CaCu 2 O 8+ x -based devices show a high superconducting transition temperature of T c ≃ 91 K close to that of the bulk crystal and demonstrate stable superconducting properties.
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Affiliations
Leibniz Institute for Solid State and Materials Science Dresden (IFW Dresden), 01069 Dresden, Germany
Institute of Applied Physics, Technische Universität Dresden, 01062 Dresden, Germany
Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, United States
Istituto dei Sistemi Complessi (ISC-CNR) and Dipartimento di Fisica, Universita, Sapienza, P.le A. Moro, 2, I-00185 Rome, Italy
Centro Ricerche Enrico Fermi, Piazza del Viminale, 1, I-00184 Rome, Italy
Department of Physics, University of Naples Federico II, 80125 Naples, Italy
Terra Quantum AG, CH-9000 St. Gallen, Switzerland
Physics Department, CUNY, City College of City University of New York, 160 Convent Ave, New York, New York 10031, United States
Institute of Materials Science, Technische Universität Dresden, 01062 Dresden, Germany
Funding
U.S. Department of Energy · Deutsche Forschungsgemeinschaft · National Science Foundation · Terra Quantum AG · Piano Nazionale di Ripresa e Resilienza (PNRR) Ministero dell'Università e della Ricerca (MUR)
References (38)
Show source-provided references
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