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題名: Evidence for Suppression of Superconductivity by Spin Imbalance in Co-Al-Co Single-Electron Transistors
作者: Chen, C. D.;Kuo, Watson;Chung, D. S.;Shyu, J. H.;Wu, Cen-Shawn
貢獻者: 物理學系
日期: 2002-01
上傳時間: 2013-03-12T04:06:03Z
出版者: The American Physical Society
摘要: Spin imbalance can lead to suppression of superconductivity. We report the phenomena manifesting this effect under spin-polarized quasiparticle currents in ferromagnet-superconductor-ferromagnet single-electron transistors. The measured superconducting gap as a function of magnetic field reveals a dramatic decrease when the magnetizations of the two leads are misaligned. The effect of suppression increases with increasing source-drain voltage. A comparison with theoretical calculations is presented. This method may render it applicable to control superconductivity at low temperatures within low fields.
關聯: Physical Review Letters, 88(4): 047004
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