颗粒状超导金刚石中超导玻璃态的观察
Observation of a superconducting glass state in granular superconducting diamond
摘要：
报道了纳米晶掺硼金刚石薄膜的超导电性与磁场的关系。在相图中的玻璃状态的证据，证明了电阻和磁弛豫测量。通过对零维涨落电导率理论的详细拟合，由电阻数据确定了H-T平面内相边界的位置。这允许以比标准的自组织开始/中点/偏移标准更高的精度来确定电阻行为和非电阻行为之间的边界。
英文摘要：
The magnetic field dependence of the superconductivity in nanocrystalline boron doped diamond thin films is reported. Evidence of a glass state in the phase diagram is presented, as demonstrated by electrical resistance and magnetic relaxation measurements. The position of the phase boundary in the H-T plane is determined from resistance data by detailed fitting to zero-dimensional fluctuation conductivity theory. This allows determination of the boundary between resistive and non-resistive behavior to be made with greater precision than the standard ad hoc onset/midpoint/offset criterion.
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