Series of maxima in the field dependent magnetic moment of layered superconductors

作者：Sywert H. Brongersma, E. Verweij, N. J. Koeman, D.G. de Groot, Ronald Griessen, Boris I. Ivlev · 发表于：Physical Review Letters · 年份：1993 · DOI：10.1103/physrevlett.71.2319 · 被引用次数：105 · 研究领域：Physics of Superconductivity and Magnetism、Magnetic properties of thin films、Magnetic and transport properties of perovskites and related materials

Magnetic moment measurements on niobium/copper multilayers by means of a torque magnetometer exhibit a series of maxima at specific field strengths ${\mathit{H}}_{\mathit{N}}$ when the applied magnetic field makes a small angle with the plane of the superconducting layers. These maxima are shown to be closely related to rearrangements of the parallel vortex system, during which an increasing number of vortex chains is formed in the sample.