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The unconventional doping in YBa2Cu3O7−x/La0.7Ca0.3MnO3 heterostructures by termination control

  • V. T. Tra
  • , R. Huang
  • , X. Gao
  • , Y. J. Chen
  • , Y. T. Liu
  • , W. C. Kuo
  • , Y. Y. Chin
  • , H. J. Lin
  • , J. M. Chen
  • , J. M. Lee
  • , J. F. Lee
  • , P. S. Shi
  • , M. G. Jiang
  • , C. G. Duan
  • , J. Y. Juang
  • , C. T. Chen
  • , H. T. Jeng
  • , Q. He
  • , Y. D. Chuang
  • , J. Y. Lin*
  • Y. H. Chu
*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

摘要

In strongly correlated oxides, heterostructures provide a powerful route to manipulate the charge, spin, orbital, and lattice degrees of freedom to create distinctive functionalities. In this work, we have achieved atomically precise interface control in YBa2Cu3O7−x/La0.7Ca0.3MnO3 (YBCO/LCMO) heterostructures and find a hidden effective doping. This mechanism is responsible for higher Tc in the sample with the MnO2-terminated interface than in that with the La0.7Ca0.3O-terminated interface. The MnO2-terminated sample also shows a larger magnetic moment of Mn together with a lower valence state. For more than a decade, the control of Tc in these heterostructures prior to this work has been solely via the variation of YBCO or LCMO thickness. This work hints at an alternative way of exploiting and exploring the interactions between superconductivity and magnetism in this system.

源语言英语
文章编号032402
期刊Applied Physics Letters
110
3
DOI
出版状态已出版 - 16 1月 2017

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