COMPOSITE FLUX-LINE LATTICES STABILIZED IN SUPERCONDUCTING FILMS BY A REGULAR ARRAY OF ARTIFICIAL DEFECTS
COMPOSITE FLUX-LINE LATTICES STABILIZED IN SUPERCONDUCTING FILMS BY A REGULAR ARRAY OF ARTIFICIAL DEFECTS
复制标题
DOI：
10.1103/physrevlett.74.3269
复制
发表时间：
1995-04-17
影响因子：
8.6
通讯作者：
BRUYNSERAEDE, Y
中科院分区：
文献类型：
--
作者：
BAERT, M;METLUSHKO, VV;BRUYNSERAEDE, Y
测量了具有亚微米孔的正方形晶格的Pb/Ge超导多层膜的磁通蠕动率和临界电流。我们发现了由空穴处的单量子或多量子涡旋和间隙处的单皮质组成的新的复合磁通线晶格。在接近临界温度的温度下，磁通线在间隙处的“金属”行为导致一级相变，类似于纳尔逊和维诺库尔介绍的磁通线的莫特绝缘体-金属相变。
Flux creep rate and critical current have been measured in superconducting Pb/Ge multilayers with a square lattice of submicron holes. The new composite flux-line lattices consisting of single or multiquanta vortices at holes and single cortices at interstitial positions have been identified. The “metallic” behavior of the flux lines at the interstices at temperatures close to the critical temperature leads to a first-order phase transition analogous to the Mott insulator-metal transition for flux lines, introduced by Nelson and Vinokur.