NDLI: Preparation of Narrowed <formula formulatype=inline> <tex Notation=TeX>${rm YBa}_{2}{rm Cu}_{3}{rm O}_{7-{rm x}}$</tex></formula> Nanobridges Down to 30 nm <newline/>With Reduced Degradation

Content Provider	IEEE Xplore Digital Library
Author	Kajino, K. Kimura, T. Horii, Y. Watanabe, M. Inoue, M. Fujimaki, A.
Copyright Year	2002
Abstract	We have established the new method of fabricating high-J_c YBa₂Cu₃O_7-x (YBCO) nanobridges with high reproducibility. Nanobridges ranging in 30-400 nm wide were formed by using electron beam lithography. An ultra thin film of 2-3 nm-thick insulative YBCO was deposited after nanobridge formation for recovering the damaged films occurred in the process. The critical current density J_c was approximately 620 MA/cm² at 4.2 K in a width of 30 nm bridges, and increased by about two orders of magnitude in the different widths of J_c. The critical temperature T_c was 87 K, about the same as T_c of the film. The current-voltage characteristics showed a different curve from the conventional flux-flow type as the widths have been narrowed. Nanobridges developed in this study are expected to the applications for nano-SQUIDs or the optical input/output interfaces in single-flux-quantum circuits.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	178
Ending Page	182
Page Count	5
File Size	2776078
File Format	PDF
ISSN	10518223
Volume Number	19
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Yttrium barium copper oxide Optical films Reproducibility of results Electron beams Lithography Sputtering Insulation Critical current density Bridge circuits Temperature superconducting devices High-temperature superconductors nanobridge
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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Sub-Micron ${rm YBa}_{2}{rm Cu}_{3}{rm O}_{7-{rm x}}$ Biepitaxial Junctions

Understanding the MOD Process Between Decomposition and YBCO Formation

$J_{rm c}-B$ Properties of ${rm YBa}_{2}{rm Cu}_{3}{rm O}_{7}$ Films Prepared on ${rm CeO}_{2}/{rm YSZ/CeO}_{2}$ Buffered Ni-Electroplated Cu Tapes

Edge-like planar sandwich-type junctions using a-axis oriented YBa/sub 2/Cu/sub 3/O/sub 7-x//insulator/YBa/sub 2/Cu/sub 3/O/sub 7-x/ trilayers

Optical detector using granular YBa/sub 2/Cu/sub 3/O/sub 7-/spl delta// weak link-type junctions

Microstructure and Interface Phase Formation in ${rm YBa}_{2}{rm Cu}_{3}{rm O}_{7-delta}$ Prepared by an MOD Process

Study of ${rm Sm}_{rm x}{rm Zr}_{1-{rm x}}{rm O}_{rm y}$ Buffer Layer and Its Effects on YBCO Properties

Intermodulation Distortion in Epitaxial Y-Ba-Cu-O Thick Films and Multilayers

Spontaneous conductance fluctuations and percolation in YBa/sub 2/Cu/sub 3/O/sub 7/ thin films

Preparation of Narrowed ${rm YBa}_{2}{rm Cu}_{3}{rm O}_{7-{rm x}}$ Nanobridges Down to 30 nm With Reduced Degradation

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Edge-like planar sandwich-type junctions using a-axis oriented YBa/sub 2/Cu/sub 3/O/sub 7-x//insulator/YBa/sub 2/Cu/sub 3/O/sub 7-x/ trilayers

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