Fujitsu Corporation

International Superconductivity Technology Center

International Superconductivity Technology Center, the Juridical Foundation

Nec Corporation

Sharp Kabushiki Kaisha Corporation

Other

Hitachi, Ltd.

The Chugoku Electric Power Co., Inc.

Yoshihiro Ishimaru

Keiichi Tanabe

Youichi Enomoto

Hironori Wakana

Yoshinobu Tarutani

Shoji Tanaka

Masahiro Horibe

Yuuji Mizuno

Hideo Suzuki

Katsumi Suzuki

Naoki Koshizuka

Seiji Adachi

Jian-Guo Wen

Kunihiko Hayashi

Koji Tsubone

Osami Horibe

A superconducting junction element has a lower electrode formed by a superconductor layer, a barrier layer provided on a portion of a surface of the lower electrode, an upper electrode formed by a superconductor and covering the barrier layer, and a superconducting junction formed by the lower electrode, the barrier layer and the upper electrode. A critical current density of the superconducting junction is controlled based on an area of the lower electrode.

Superconducting junction element and superconducting junction circuit

The present invention provides a superconducting device including a substrate, a first superconducting pattern formed on the substrate, an insulating pattern formed on the first superconducting pattern, and a second superconducting pattern formed at the uppermost level in the multilayered superconducting pattern. A barrier layer of a Josephson junction is formed on the lower side of, or within the second superconducting pattern. The second superconducting pattern constitutes a circuit element on the insulating pattern.

Superconducting device and method of manufacturing the same

An image processing apparatus includes a contour extraction unit and a contour correcting unit. The contour extraction unit ascertains intensity difference between each of the pixels in the original image data and pixels around the pixel, and evaluates sharpness of a contour to determine intensity of a pixel in the contour image data based on gradient of intensity of the pixel. The contour correcting unit shifts a contour of the pixel in a predetermined direction based on a direction of a slant of the gradient of intensity when an absolute value of the gradient of intensity is larger than threshold.

Image processing apparatus, image processing method, and computer product

At least two ramp-edge-structure Josephson junctions having different critical current densities to one another are provided on a substrate.

High-temperature superconducting device and manufacturing method thereof

One of optical packets x copied by an optical copying mechanismis converted into an electric packet by an optic/electric converting mechanism. An address information extracting mechanismextracts address information from a header of the packet converted into the electric packet. A control light generating mechanismgenerates a control light based on the extracted address information. The other of the copied optical packets x is delayed by an optical delaying mechanismfor a predetermined time, and entered to a third nonlinear optical effect device. The third nonlinear optical effect deviceswitches a route of the optical packet x based on the control light. The optical packet x is outputted through an optic/electric converting mechanism, a buffer, a multiplexing mechanism, and an electric/optic converting mechanism

Apparatus and method for self-routing optical packet

A method of fabricating a Josephson device includes the steps of forming a first superconducting layer and forming a second superconducting layer to form a Josephson junction therebetween, wherein the step of forming the second superconducting layer includes the steps of conducting a first step of forming the second superconducting layer with improved uniformity and conducting a second step of forming the second superconducting layer on the second superconducting layer formed in the first step with improved film quality.

Josephson device and fabrication process thereof

Any oxide superconductor Josephson junction element having an oxide superconductor oriented in the c-axis direction with respect to a substrate, and a needle-like, a-axis (or b-axis) oriented oxide superconductor. Both sides of the needle-like, a-axis (or b-axis) oriented oxide superconductor are sandwiched between the c-axis oriented superconductors. The crystal boundary sections between the needle-like, a-axis (or b-axis) oriented oxide superconductor and each of the c-axis oriented superconductors form a weak link of the Josephson junction. The needle-like, a-axis (or b-axis) oriented oxide superconductor is grown such that the c-axis direction thereof is oriented in the (110) direction which is inclined at an angle of 45 degrees with respect to the (100) direction or (010) direction of the c-axis oriented superconductors.

Oxide superconductor Josephson junction element and process for

A superconducting Josephson junction element including a first, a-axis oriented, superconductive metal oxide crystal grain having a first area of a {001} plane, and a second, c-axis oriented, superconductive metal oxide crystal grain having a second area of a {110} plane, wherein the first and second crystal grains are in contact with each other at the first and second areas to form a grain boundary therebetween.

High Tc superconducting Josephson junction element

An oxide superconductor element, produced by forming a damaged region on a substrate surface by the Ga.sup.+ focusing ion beam method and then depositing an oxide superconductor thin-film over it, is characterized in that a NdBa.sub.2 Cu.sub.3 O.sub.7-y (0.ltoreq.y.ltoreq.0.5) oxide superconductor is used in a tunnel junction having a tunneling barrier region with weak superconductivity.

Growing community of inventors

Yokohama, Japan

Yoshihiro Ishimaru