Quantum-resolved investigations of flux dynamics: Collective and single vortex effects.
Quantum-resolved investigations of flux dynamics: Collective and single vortex effects.
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通量动力学的量子分辨研究：集体和单个涡旋效应。
DOI：
10.1103/physrevlett.71.3854
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发表时间：
1993
影响因子：
8.6
通讯作者：
Henini
中科院分区：
文献类型：
--
作者：
Stoddart;Bending;Geim;Henini
用单通量分辨率研究了Pb薄膜中通量涡的动力学。随着磁场的增大，从单一涡旋效应为主的区域到涡旋运动相关的区域会发生交叉。我们直接测量了通量束相关半径，并跟踪了单个漩涡或相关束在施加的直流电流作用下或响应温度变化时的运动。通量流动和通量蠕变的特征已经被确定，使我们能够确定在单个钉钉位置的钉钉力。
The dynamics of flux vortices in Pb films has been investigated with single fluxon resolution. With increasing magnetic field, there is a crossover from a region where single vortex effects dominate to one where vortex motion becomes correlated. We have measured the flux bundle correlation radius directly and tracked single vortices or correlated bundles as they moved under the action of an applied dc current or in response to a change in temperature. The signatures of flux flow and flux creep have been identified, enabling us to determine the pinning force at individual pinning sites.