A coated conductor comprises a substrate supporting a ReBCO superconductor adapted to carry current in a superconducting state. The superconductor is characterized in having peaks in critical current (J.sub.c) of at least 0.2 MA/cm.sup.2 in a magnetic field of about 1 Tesla when the field is applied normal to the surface of the superconductor and when the field is applied parallel to the surface of the superconductor, and further characterized in that the superconductor includes horizontal defects and columnar detects in a size and an amount sufficient to result in the said critical current response. The conductor is characterized in that the ratio of the height of the peaks in the J.sub.c is in the range from 3:1 with the ratio of the field perpendicular (0 degrees) to the field parallel (+/−90 degrees) to the range from 3:1 with the ratio of the field parallel to the field perpendicular.

Coils for superconducting magnets and methods of making coils for superconducting magnets and controlling the turn-to-turn contact resistance of coils. The coils include a REBCO superconducting tape coated with a layer of tin-lead solder, co-wound with an oxidized stainless steel tape. The inclusion of tin-lead solder on the REBCO tape and a layer of oxidation on the stainless steel tape advantageously allow for tuning of the turn-to-turn contact resistance of the coil, and advantageously mitigates the effect of repeated pressure cycling on the turn-to-turn contact resistance.

Electrical, mechanical, computing, and/or other devices that include components formed of extremely low resistance (ELR) materials, including, but not limited to, modified ELR materials, layered ELR materials, and new ELR materials, are described.

This disclosure teaches methods for making high-temperature superconducting striated tape combinations and the product high-temperature superconducting striated tape combinations. This disclosure describes an efficient and scalable method for aligning and bonding two superimposed high-temperature superconducting (HTS) filamentary tapes to form a single integrated tape structure. This invention aligns a bottom and top HTS tape with a thin intervening insulator layer with microscopic precision, and electrically connects the two sets of tape filaments with each other. The insulating layer also reinforces adhesion of the top and bottom tapes, mitigating mechanical stress at the electrical connections. The ability of this method to precisely align separate tapes to form a single tape structure makes it compatible with a reel-to-reel production process.

An antenna comprising; a substrate; a continuous film of yttrium barium copper oxide (YBCO) disposed on the substrate having first and second regions, wherein the first region has a first oxygen doping level and wherein the second region has a second oxygen doping level that is different from the first oxygen doping level; a nano-scale conductive structure, shaped to resonate at a terahertz (THz) frequency, disposed on a boundary between the first and second regions; and a conductive path electrically connected to the first and second regions and to the conductive structure such that induced current in the structure due to incoming THz radiation heats the boundary thereby creating a thermal gradient, which results in the generation of Seebeck effect voltage.

High temperature superconductor (HTS)-based interconnect systems comprising a cable including HTS-based interconnects are described. Each of the HTS-based interconnects includes a first portion extending from a first end towards an intermediate portion and a second portion extending from the intermediate portion to a second end. Each of the HTS-based interconnects includes a substrate layer formed in the first portion, in the intermediate portion, and in the second portion, a high temperature superconductor layer formed in at least a sub-portion of the first portion, in the intermediate portion, and in the second portion, and a metallic layer formed in the first portion and in at least a sub-portion of the intermediate portion. The HTS-based interconnect system includes a thermal load management system configured to maintain the intermediate portion of each of the HTS-based interconnects at a predetermined temperature in a range between a temperature of 60 kelvin and 92 kelvin.

A second-generation high temperature superconducting (HTS) strip and a preparation method thereof are provided. The second-generation HTS strip includes a superconducting strip body and a stabilizing layer arranged thereon. The stabilizing layer is a copper-graphene composite film with a total thickness of 2-30 microns on one side. The superconducting strip may be obtained by the preparation method of: (1) putting a superconducting strip body into a magnetron sputtering reaction chamber, followed by pumping to a high-level vacuum and filling with a working gas; (2) using copper and graphene as targets, and performing a sputter coating by controlling a magnetron sputtering power, to deposit the targets onto at least one surface of the superconducting strip body. The prepared HTS strips containing copper-graphene stabilizing layer with high strength and high conductivity may have 30%-70% higher tensile strength than conventional copper plated superconducting strips, with less than 10% IACS attenuation in conductivity.

A segment of a field coil, a toroidal field coil, and a method of manufacturing is provided. The segment of a field coil is for use in a superconducting electromagnet. The segment includes an assembly for carrying electrical current in a coil of a magnet. The assembly includes a pre-formed housing comprising a channel configured to retain high temperature superconductor (HTS) tape, the channel including at least one pre-formed curved section. The assembly further includes a plurality of layers of HTS tape fixed within the channel. Wherein the pre-formed curved section has a radius of curvature which is less than a total thickness of the layers of HTS tape in that section divided by twice a maximum permitted strain of the HTS tape.

A REBCO superconductor tape that can achieve a lift factor greater than or equal to approximately 3.0 or 4.0 in an approximately 3 T magnetic field applied perpendicular to a REBCO tape at approximately 30 K. In an embodiment, the REBCO superconductor tape can include a critical current density less than or equal to approximately 4.2 MA/cm.sup.2 at 77 K in the absence of an external magnetic field. In another embodiment, the REBCO superconductor tape can include a critical current density greater than or equal to approximately 12 MA/cm.sup.2 at approximately 30 K in a magnetic field of approximately 3 T having an orientation parallel to a c-axis.

A superconducting power cable system includes a superconducting power cable in a first temperature environment separated from a second temperature environment by a thermal barrier. The first temperature environment is an interior of a cryostat and is at a lower temperature than the second temperature environment located outside of the cryostat. At least one superconducting feeder cable has a first end electrically coupled to the superconducting power cable in the first temperature environment, and a second end electrically coupled to a normal conducting current lead in the second temperature environment. Each superconducting feeder cable is a flexible superconducting cable or wire formed of multiple superconducting tapes that are wound in a helical fashion and in multiple layers around a round former.