Magneto-transport properties of curved mesoscopic superconducting strips
Magneto-transport properties of curved mesoscopic superconducting strips
复制标题
弯曲介观超导带的磁输运特性
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
G. Costabile
中科院分区：
文献类型：
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作者：
P. Sabatino;G. Carapella;G. Costabile
在含时的Ginzburg-Landau理论框架下研究了弯曲介观超导带的输运性质。这里考虑的超导带的几何形状是圆柱壳的一部分或完整的圆柱壳，其中磁场垂直于轴施加。圆柱形部分可以表现出相当不对称的输运性质，使其作为亚微米尺度的超导电流整流器具有潜在的兴趣。完整的圆柱形表面表现出良好的发展耗散分支的电压-电流曲线，可以占运动学涡旋-反涡旋相滑移线。这种类型的相位滑移线引起的电压振荡的频率范围高于与熟悉的磁通量流动状态相关联的频率范围。
Transport properties of curved mesoscopic superconducting strips are investigated in the framework of the time-dependent Ginzburg–Landau formalism. The geometries of the superconducting strips considered here are either a section of a cylindrical shell or a full cylindrical shell in which the magnetic field is applied perpendicular to the axis. The cylindrical section can exhibit considerably asymmetric transport properties, making it potentially interesting as a sub-micrometer scale superconducting current rectifier. The full cylindrical surface exhibits well developed dissipative branches in the voltage–current curves, that can be accounted for by kinematic vortex–antivortex phase slip lines. Such kinds of phase slip lines cause voltage oscillations in a frequency range higher than the one associated with the familiar flux flow regime.