本文应用二维约瑟夫森弱连接网络模型,讨论了磁场引起的二维超导体系中磁通"涡旋-反涡旋"束缚对的激发问题,给出了自由涡旋分布n(T,H)的分析表达式,对比YBCO颗粒膜样品的非平衡微波响应测量数据发现:两者具有相似的分布特征.该结果表明,高温超导颗粒膜的非平衡微波响应机制与磁通"涡旋-反涡旋"束缚对的激发态可能存在某种内在联系.
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