Inhomogeneous superconducting state of superconducting networks in a magnetic field
Inhomogeneous superconducting state of superconducting networks in a magnetic field
复制标题
磁场中超导网络的非均匀超导状态
DOI：
10.1103/physrevb.68.094509
复制
发表时间：
2003
影响因子：
3.7
通讯作者：
M. Kato
中科院分区：
文献类型：
--
作者：
O. Sato;M. Kato
利用de Gennes-Alexander网络方程，研究了磁场中超导蜂窝网络和正方形网络的转变温度。我们发现，由于外场的有限集团的转变温度TC的下降是小的相比，周期性网络。当T≤ TC时，有限边团簇的超导序参量变得不均匀，而无限格点的超导序参量变得不均匀。从序参量相位的缠绕数得到了量子化磁通粒子的分布。
Making use of de Gennes-Alexander's network equation, we have investigated the transition temperature of superconducting honeycomb and square lattice networks in magnetic field. We found that the decrease of the transition temperature T C of the finite cluster due to the external field is small compared with that of the periodic networks. At T≤T C , the superconducting order parameter becomes inhomogeneous for the finite clusters with edge in contrast to the case of the infinite lattice with periodic boundary condition. Also we obtained the distribution of quantized fluxoids from the winding number of the phase of the order parameter.