The preparation and electrical properties of high-temperature superconductor nanowire arrays are reported for the first time. YBa2Cu3O(7-delta) nanowires with widths as small as 10 nm (much smaller than the magnetic penetration depth) and lengths up to 200 microm are studied by four-point electrical measurements. All nanowires exhibit a superconducting transition above liquid nitrogen temperatu...

In high-temperature cuprate superconductors, it is now generally agreed that superconductivity is realized by doping an antiferromagnetic Mott (charge transfer) insulator. The doping-induced insulator-to-superconductor transition has been widely observed in cuprates, which provides important information for understanding the superconductivity mechanism. In the iron-based superconductors, howeve...

Since the discovery of the high Tc superconductivity by Bednorz and Muller, several workers around the world have studied several systems to reach a really high Tc superconductor. As the strong electron-phonon coupling may be one of the possible origins of the high Tc, a knowledge about the phonon in these materials is essential. In order to investigate phonon spectra, Raman and infrared spectr...

Macroscopic mechanisms of applied current penetration in high-Tc superconductors are discussed to understand the basic physical trends, which are characteristic for the stable and unstable formation of the thermo-electrodynamics states of high-Tc superconductors placed in DC external magnetic field. The performed analysis shows that the definition of the current stability conditions of high-Tc ...

As devices become ever smaller and more efficient, the crystallochemically controlled synthesis of high-performance materials that comprise their core has attracted enormous attention. Integration complex functional into next generation electronic will require exquisite control anisotropic form, either as nanotubes, nanotapes, or nanowires, yet easy preparation abundant quantities them remains ...