Magnetic response of field-cooled type-I superconducting hollow cylinders

被引：2
|
作者：
De Luca, Roberto [1 ]
机构：
[1] INFM, Dipartimento di Fisica, Università degli Studi di Salerno, 84081 Baronissi (SA), Italy
来源：
Physica B: Condensed Matter | 2000年 / 284卷
关键词：
Cooling - Cylinders (containers) - Diamagnetism - Magnetic field effects - Magnetic flux - Magnetic susceptibility - Quantum theory - Thermodynamic properties;
D O I：
10.1016/S0921-4526(99)02101-8
中图分类号：
学科分类号：
摘要：
A long hollow cylinder is the simplest multiply-connected system that allow a rigorous elementary thermodynamic analysis. The magnetic response of hollow cylinders of type-I superconductors after field-cooling exhibited paramagnetic response in a narrow field interval. The amplitude ΔH of this interval depended inversely on the cross-section Sh of the hole. However, the response of the system was diamagnetic for all fields if Sh/S&leα0. For microcylinders of total cross-section S = 6π×10-10 m2 this effect was observed for fields H such 0.82 μT0H<1.09 μT.
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