Magnetization of mesoscopic superconducting disks

被引:168
作者
Deo, PS
Schweigert, VA
Peeters, FM
Geim, AK
机构
[1] CATHOLIC UNIV NIJMEGEN, HIGH FIELD MAGNET LAB, NL-6525 ED NIJMEGEN, NETHERLANDS
[2] RUSSIAN ACAD SCI, INST THEORET & APPL MECH, NOVOSIBIRSK 630090, RUSSIA
关键词
D O I
10.1103/PhysRevLett.79.4653
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Solutions of Ginzburg-Landau equations coupled with three-dimensional Maxwell equations reveal an intriguing magnetic response of small superconducting particles, qualitatively different from the two-dimensional approximation but in agreement with recent experiments. Depending on the radius and thickness, first or second order transitions are found for the normal to superconducting state. For a sufficiently large radius of the disk, several transitions in the superconducting phase are obtained which correspond to different angular momentum giant vortex states. The incorporation of the finite thickness in the calculation is crucial in order to obtain agreement with the position and the size of these jumps, and the line shape and magnitude of the magnetization curves.
引用
收藏
页码:4653 / 4656
页数:4
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