Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9841698 | Physica C: Superconductivity and its Applications | 2005 | 5 Pages |
Abstract
We have investigated a honeycomb microhole network of Pb film by a SQUID magnetometer and a SQUID microscope. A negative pattern of honeycomb network of photoresist has been fabricated by an electron beam lithography. A film of 200-nm thickness was prepared by the evaporation of Pb on the photoresist pattern, where the silicon substrate is 4 Ã 4 mm in size. The period of the network is 7.4 μm and line width is 1 μm. We found the matching effect in a M-H curve of the Pb honeycomb network by the SQUID magnetometer. The applied field ranges from â4.7 G to +4.7 G. Vortex configurations in the honeycomb network of the period 15 μm and line width 2 μm have also been observed by the SQUID microscope. We suggest that vortices form some local triangular configurations at lower temperatures.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Hirokazu Yoshikawa, Hiroshi Noda, Osamu Sato, Masaru Kato, Kazuo Satoh, Tsutomu Yotsuya, Takekazu Ishida,