Abstract: A DC superconducting interference device (SQUID) utilizes intrinsic Josephson tunnel junctions formed naturally in stacks of high-Tc superconducting single crystals, where the double-side cleaving technique is used to define a ring-shaped high-Tc superconducting structure with two stacks of intrinsic Josephson junctions inserted in the ring.

Abstract: A DC superconducting interference device (SQUID) utilizes intrinsic Josephson tunnel junctions formed naturally in stacks of high-Tc superconducting single crystals, where the double-side cleaving technique is used to define a ring-shaped high-Tc superconducting structure with two stacks of intrinsic Josephson junctions inserted in the ring.

Abstract: Provided is a THz electromagnetic wave radiation and detection device using a high-Tc superconductor. The device includes an electromagnetic generation unit which is formed of a superconducting single crystal mesa structure where intrinsic Josephson junctions of superconducting layers and insulating layers are serially stacked and which can excite a THz electromagnetic wave; an insulating unit which contacts the electromagnetic wave generation unit and is not conductive; and an electromagnetic wave detection unit which contacts the insulating unit, is formed of the superconducting single crystal mesa structure where intrinsic Josephson junctions of the superconducting layers and the insulating layers are serially stacked and which can detect the THz electromagnetic wave. The radiation of the THz electromagnetic wave excited in the electromagnetic wave generation unit is coupled to the electromagnetic wave detection unit through the insulating unit instead of being emitted into the free space (air).