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International Superconductivity Technology Center

International Superconductivity Technology Center, the Juridical Foundation

Sega Enterprises, Ltd.

The Chugoku Electric Power Co., Inc.

Seiji Adachi

Keiichi Tanabe

Hironori Wakana

Nobuyoshi Inoue

Akira Tsukamoto

Yasuo Oshikubo

Tsuyoshi Sugano

Yusuke Shimizu

Yoshinobu Tarutani

Masahiro Horibe

Yoshihiro Ishimaru

Paul Mitchell Heilman, Iii

Koji Tsubone

Daniel Luke Poling, Jr

Osami Horibe

Yoichi Uchida

Yasuhiro Noguchi

Eric Rayburn Hammond

A high-temperature superconducting magnetic sensor having superconducting layers formed on a substrate, a superconducting quantum interference device (SQUID) being formed on the superconducting layers, the high-temperature superconducting magnetic sensor includes: a pickup coil that is formed on the superconducting layer and is connected to an inductor of the SQUID; and an input coil that is formed on the superconducting layer, is connected to the inductor of the SQUID and the pickup coil to form a closed loop, and is magnetically coupled with the inductor of the SQUID. In planar view, at least one turn of the input coil surrounds the inductor of the SQUID, or is surrounded by the inductor of the SQUID. The width of the superconductor forming the inductor of the SQUID is 10 &#x3bc;m or less.

High-temperature superconducting magnetic sensor

A high-temperature superconducting magnetic sensor having a superconducting layer formed on a substrate and a plurality of superconducting quantum interference devices fabricated on the superconducting layer, which includes: a plurality of input coils that are formed on the superconducting layer and connected to or magnetically coupled with each of the plurality of the superconducting quantum interference devices; a pickup coil that is formed on the superconducting layer and connected so as to form a closed loop together with the plurality of the input coils; and a plurality of trimming wires that are formed on the superconducting layer and can be cut off, while making a short-circuit between both ends of each of the plurality of the input coils.

High-temperature superconducting magnetic sensor and fabrication method of the same

A Josephson device includes a first superconducting electrode layer, a barrier layer and a second superconducting electrode layer that are successively stacked. The first and second superconducting electrode layers are made of an oxide superconductor material having (RE)(AE)CuOas a main component, where an element RE is at least one element selected from a group consisting of Y, La, Pr, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb and Lu, and an element AE is at least one element selected from a group consisting of Ba, Sr and Ca. The barrier layer is made of a material that includes the element RE, the element AE, Cu and oxygen, where in cations within the material forming the barrier layer, a Cu content is in a range of 35 At. % to 55 At. % and an RE content is in a range of 12 At. % to 30 At. %, and the barrier layer has a composition different from compositions of the first and second superconducting electrode layers.

Josephson device, method of forming Josephson device and superconductor circuit

A Josephson junction having a barrier layer sandwiched by two superconductors wherein the superconductors include one or more elements selected from the group of Y, La, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb and Lu, one or more elements selected from the group of Ba, Sr and Ca, and Cu and oxygen, wherein the two superconductors each include at least five elements with compositions different from each other, or the barrier layer () includes one or more elements selected from the group of La, Nd, Sm and Eu, and one or more elements selected from the group of Y, Gd, Dy, Ho, Er, Tm, Yb and Lu.

High temperature superconducting josephson junctin, superconducting electronic device provided with the former and method of manufacturing high temperature superconducting josephson junction

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

A superconductor having at least one Hg&mdash;M&mdash;Cu&mdash;O (M&equals;Ba, Sr and/or Ca) superconducting film provided on a substrate and having a thickness of between 300 &angst; to 950 &angst;. The superconductor may be prepared by forming, on a substrate, a precursor laminate composed of a first, M&mdash;Cu&mdash;O film and a second, Hg&mdash;O film. The precursor laminate film-bearing substrate is placed in a closed vacuum chamber together with a first pellet of HgO, MO and CuO and a second pellet of MO and CuO. The contents in the chamber are heated to form, on the substrate, a superconducting Hg&mdash;M&mdash;Cu&mdash;O film. The thickness of the first M&mdash;Cu&mdash;O film of the precursor is controlled so that the thickness of the superconducting Hg&mdash;M&mdash;Cu&mdash;O film is in the range of between 300 &angst; to 950 &angst;.

Mercury-containing copper oxide superconductor

When program data is distributed to users across an open network, such as the Internet, a licensing agreement concluded between a server for the program data and a manager is maintained and the unauthorized copying of program data is prevented. Therefore, to fulfill such the situation, a program data distribution system includes an open network; a file server, connected to the open network, for distributing encrypted program data; a key server, connected to the open network, for distributing a decryption key used to decode the encrypted program data; and a terminal, connected to the open network, for processing program data, the terminal employing the decryption key distributed by the key server to decode the encrypted program data obtained from the file server.

Program data distribution via open network

Mercury-containing copper oxide superconductor and method of producing same

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Narashino, Japan

Seiji Adachi