نتایج جستجو برای: superconducting materials
تعداد نتایج: 460211 فیلتر نتایج به سال:
We report systematic investigations of the magnetic superconducting properties of the new superconducting materials (NS): New high temperature superconductors (HTS), Organic superconductors (OS), fullerenes, carbon nanotubes, MgB2 etc. We show that, contrary to conventional superconductors where the superconducting state can be coherent over several tenths of km, the macroscopic coherence ran...
The microscopic mechanism governing the zero-resistance flow of current in some iron-based, high-temperature superconducting materials is not well understood up to now. A central issue concerning the investigation of these materials is their superconducting gap symmetry and structure. Here we present a combined study of low-temperature specific heat and scanning tunnelling microscopy measuremen...
Superconducting and topological states are two most intriguing quantum phenomena in solid materials. The entanglement of these two states, the topological superconducting state, will give rise to even more exotic quantum phenomena. While many materials are found to be either a superconductor or a topological insulator, it is very rare that both states exist in one material. Here, we demonstrate...
Mechanical relaxation experiments have been widely applied to bulk high temperature (HT,) superconducting materials. In contrast to that only few results obtained on HT, superconducting thin films were reported. None dealt with stress driven phenomena due to the high background damping from the substrate materials used. In applied magnetic fields, however, a host reed technique can be used and ...
Mesoscale Materials Chemistry Laborato Research Center for Materials Nanoarchit Materials Science (NIMS), 1-1 Namiki, Tsu [email protected] Faculty of Science and Engineering, Waseda 169-8555, Japan TOC Capacitor, 3-20-32 Tenryucho, Okayas Institute for Superconducting & Electro Innovative Materials, University of Wollon North Wollongong, NSW 2500, Australia. E† Electronic supplementar...
Synthesis of the CuSr2YCu20 7 compounds with Re, W and Mo substituted for Cu has been optimized for the highest T~. Materials prepared in air at 990°C and annealed at 650-700°C in 220 atm. 02 are tetragonal with the transition elements substituting on the Cu-"chain" site, have oxygen content ~ 7.3, and are superconducting with T~ ~ 70 K. The irreversibility lines show rather poor pinning charac...
In the iron pnictides and chalcogenides, multiple orbitals participate in the superconducting state, enabling different gap structures to be realized in distinct materials. Here we argue that the spectral weights of these orbitals can, in principle, be controlled by a tetragonal symmetry-breaking uniaxial strain, due to the enhanced nematic susceptibility of many iron-based superconductors. By ...
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