Asymmetric flux pinning in laterally nanostructured ferromagnetic/superconducting bilayers

被引:27
作者
Lange, M
Van Bael, MJ
Van Look, L
Temst, K
Swerts, J
Güntherodt, G
Moshchalkov, VV
Bruynseraede, Y
机构
[1] Katholieke Univ Leuven, Vaste Stof Fys & Magnetisme Lab, B-3001 Louvain, Belgium
[2] Rhein Westfal TH Aachen, Inst Phys 2, D-52056 Aachen, Germany
来源
EUROPHYSICS LETTERS | 2001年 / 53卷 / 05期
关键词
D O I
10.1209/epl/i2001-00606-0
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We investigated the pinning of flux lines in a superconducting lm by a regular array of magnetic antidots. The sample consists of a Co/Pt multilayer with perpendicular magnetic anisotropy in which a regular pattern of submicron holes is introduced and which is covered by a type-II superconducting Pb film. The resulting ferromagnetic/superconducting heterostructure shows a pronounced asymmetric magnetization curve with respect to the field polarity. This asymmetry clearly demonstrates that the magnetic contribution dominates the pinning potential imposed by the magnetic antidots on the superconducting film.
引用
收藏
页码:646 / 652
页数:7
相关论文
共 20 条
[1]   MAGNETIC DOMAINS IN THIN EPITAXIAL CO/AU(111) FILMS [J].
ALLENSPACH, R ;
STAMPANONI, M ;
BISCHOF, A .
PHYSICAL REVIEW LETTERS, 1990, 65 (26) :3344-3347
[2]  
[Anonymous], CLASSICAL ELECTRODYN
[3]   COMPOSITE FLUX-LINE LATTICES STABILIZED IN SUPERCONDUCTING FILMS BY A REGULAR ARRAY OF ARTIFICIAL DEFECTS [J].
BAERT, M ;
METLUSHKO, VV ;
JONCKHEERE, R ;
MOSHCHALKOV, VV ;
BRUYNSERAEDE, Y .
PHYSICAL REVIEW LETTERS, 1995, 74 (16) :3269-3272
[4]   FLUX PHASES AND QUANTIZED PINNING FORCE IN SUPERCONDUCTOR WITH A PERIODIC LATTICE OF PINNING CENTERS [J].
BAERT, M ;
METLUSHKO, VV ;
JONCKHEERE, R ;
MOSHCHALKOV, VV ;
BRUYNSERAEDE, Y .
EUROPHYSICS LETTERS, 1995, 29 (02) :157-162
[5]   CRITICAL CURRENTS IN AL FILMS WITH A TRIANGULAR LATTICE OF 1-MU-M HOLES [J].
HEBARD, AF ;
FIORY, AT ;
SOMEKH, S .
IEEE TRANSACTIONS ON MAGNETICS, 1977, 13 (01) :589-592
[6]   Magnetic pinning of the vertex lattice by arrays of submicrometric dots [J].
Jaccard, Y ;
Martin, JI ;
Cyrille, MC ;
Velez, M ;
Vicent, JL ;
Schuller, IK .
PHYSICAL REVIEW B, 1998, 58 (13) :8232-8235
[7]   MICROSTRUCTURAL DEPENDENCE OF MAGNETIC-PROPERTIES OF PT/CO MULTILAYER THIN-FILMS [J].
LI, ZG ;
CARCIA, PF .
JOURNAL OF APPLIED PHYSICS, 1992, 71 (02) :842-848
[8]   Magnetization controlled superconductivity in a film with magnetic dots [J].
Lyuksyutov, IF ;
Pokrovsky, V .
PHYSICAL REVIEW LETTERS, 1998, 81 (11) :2344-2347
[9]   Vortex structure around a magnetic dot in planar superconductors [J].
Marmorkos, IK ;
Matulis, A ;
Peeters, FM .
PHYSICAL REVIEW B, 1996, 53 (05) :2677-2685
[10]   Artificially induced reconfiguration of the vortex lattice by arrays of magnetic dots [J].
Martín, JI ;
Vélez, M ;
Hoffmann, A ;
Schuller, IK ;
Vicent, JL .
PHYSICAL REVIEW LETTERS, 1999, 83 (05) :1022-1025