Research Development Corporation of Japan

Kabushiki Kaisha Riken

Technological University of Nagaoka

Tsutomu Yamashita

Toshio Hirai

Hideyuki Kurosawa

Hisanori Yamane

Jinichi Matsuda

A method of manufacturing Josephson junctions includes steps of high Tc superconductor thin films on a substrates by chemical vapor deposition using raw materials, which includes at least yttrium, barium and copper, serving as vapor generating sources, and fabricating the high Tc superconductor thin films into micro-bridges to produce Josephson junctions.

Method of manufacturing josephson junctions

A superconducting electron beam generator comprising a cavity resonator situated in a refrigerator and containing a superconductive metal member fixed on the cavity end plate, a tip of which member is disposed at the strongest point of a high frequency electric field formed in the cavity. A high quality and high energy coherent electron beam is emitted by the electric field from the tip of the metal member along an axis of the cavity and derived through a minute hole formed through the opposite end plate. This superconducting electron beam generator is particularly suitable for a high resolution electron microscope, a high quality X-ray generator, a crystallographic electron beam apparatus and the like.

Superconducting electron beam generator

Growing community of inventors

Nagaoka, Japan

Tsutomu Yamashita