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Kasai, Shinya*; Hirayama, Yusuke*; Takahashi, Yukiko*; Mitani, Seiji*; Hono, Kazuhiro*; Adachi, Hiroto; Ieda, Junichi; Maekawa, Sadamichi
Applied Physics Letters, 104(16), p.162410_1 - 162410_4, 2014/04
Times Cited Count:14 Percentile:52.06(Physics, Applied)Tonomura, A.*; Hasai, H.*; Kamimura, O.*; Matsuda, T.*; Harada, K.*; Nakayama, Y.*; Shimoyama, J.*; Kishio, K.*; Hanaguri, T.*; Kitazawa, K.*; et al.
Nature, 412(6847), p.620 - 622, 2001/08
Times Cited Count:104 Percentile:94.31(Multidisciplinary Sciences)Direct observation microscopically elucidated the behaviour of vortices in Bi-2212 thin films. The isotropic pinning of vortices by columnar defects at low magnetic fields indirectly inferred by macroscopic magnetization measurements can be explained microscopically as follows; vortex lines are trapped along columns ate temperatures above 19K irrespective of the direction of the applied magnetic field; and at temperatures below 12K vortex lines always penetrate the film perpendicularly to the film plane owing to the increased background pinning compared to the columnar-defect pinning and also because of the demagnetization effect of thin film.