Magnetic Field Effect on Charge Imbalance Conversion in Superconducting Wires

DOI Web Site Web Site 被引用文献3件 参考文献30件
  • Takane Yositake
    Department of Quantum Matter, Graduate School of Advanced Sciences of Matter, Hiroshima University
  • Nagato Yasushi
    Information Media Center, Hiroshima University

この論文をさがす

抄録

We study quasiparticle charge imbalance created in a thin superconducting wire at low temperatures focusing on its conversion induced by a weak magnetic field B. We show that the magnetic field effect on charge imbalance is characterized by the parameter Γ=De2B2a2⁄12 (D: diffusion constant, a: effective transverse dimension of the wire), and determine the corresponding conversion time. To observe the influence of magnetic field-induced conversion, we adopt an experimental setup in which excess tunneling current Iex arising from charge imbalance can be measured at an attached junction, and numerically obtain Iex as a function of Γ. It is shown that Iex is strongly suppressed by the conversion even when a magnetic field is weak. This indicates that we can control the charge imbalance conversion rate by applying a weak magnetic field.

収録刊行物

被引用文献 (3)*注記

もっと見る

参考文献 (30)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ