首页> 外文期刊>Physical review >Fluxoid fluctuations in mesoscopic superconducting rings
【24h】

Fluxoid fluctuations in mesoscopic superconducting rings

机译:介观超导环中的助焊剂涨落

获取原文
获取原文并翻译 | 示例
           

摘要

Superconducting rings represent an ideal system for studying phase coherence in one dimension. We study the temperature dependence of the magnetic susceptibility of superconducting rings with a scanning superconducting quantum interference device. The physical parameters of the rings were designed to reduce the superconducting phase stiffness. We observe a suppression of the susceptibility signal below the critical temperature, which we attribute to a thermodynamic sampling of metastable states with different phase winding number, termed fluxoid fluctuations. We introduce a simple model (N. C. Koshnick, Ph.D. thesis, Stanford University, 2009) for the susceptibility of a ring affected by fluxoid fluctuations and compare it with one-dimensional (ID) Ginzburg-Landau (GL) theory including all thermal fluctuations. We find good agreement between our fluxoid model and the full ID GL theory up to a shift in the critical temperature. Additionally, our magnetic susceptibility data are well described by ID GL theory.
机译:超导环是研究一维相位相干性的理想系统。我们用扫描超导量子干涉装置研究了超导环的磁化率的温度依赖性。环的物理参数设计为降低超导相刚度。我们观察到在临界温度以下会抑制磁化率信号,这归因于具有不同相绕组数的亚稳态的热力学采样,称为磁通量波动。我们介绍了一个受磁通量波动影响的环的磁化率的简单模型(NC Koshnick,博士学位,斯坦福大学,2009),并将其与一维(ID)的Ginzburg-Landau(GL)理论进行比较,包括所有热波动。我们发现,在临界温度变化之前,我们的磁通量模型与完整的ID GL理论之间具有良好的一致性。此外,ID GL理论很好地描述了我们的磁化率数据。

著录项

  • 来源
    《Physical review》 |2011年第13期|p.134523.1-134523.12|共12页
  • 作者单位

    Department of Physics and Department of Applied Physics, Stanford University, Stanford, California 94305, USA;

    Department of Physics and Department of Applied Physics, Stanford University, Stanford, California 94305, USA;

    Department of Physics and Department of Applied Physics, Stanford University, Stanford, California 94305, USA,Department of Physics, RWTH Aachen University, Aachen Germany;

    Department of Physics and Department of Applied Physics, Stanford University, Stanford, California 94305, USA;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    persistent currents; magnetic properties;

    机译:持续的电流;磁性;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号