Progress in Superconductivity and Cryogenics (한국초전도ㆍ저온공학회논문지)

The Korean Society of Superconductivity and Cryogenics (한국초전도저온학회)
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Annealing condition dependence of the superconducting property and the pseudo-gap in the protect-annealed electron-doped cuprates

  • Jung, Woobeen (Center for Correlated Electron Systems, Institute for Basic Science) ;
  • Song, Dongjoon (National Institute of Advanced Industrial Science and Technology) ;
  • Cho, Su Hyun (Institute of Physics and Applied Physics, Yonsei University) ;
  • Kim, Changyoung (Center for Correlated Electron Systems, Institute for Basic Science) ;
  • Park, Seung Ryong (Department of Physics, Research Institute of Basic Sciences, Incheon National University)
  • Received : 2016.05.21
  • Accepted : 2016.06.09
  • Published : 2016.06.30
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Abstract

Annealing as-grown electron-doped cuprates under a low oxygen-partial-pressure condition is a necessary step to achieve superconductivity. It has been recently found that the so-called protect annealing results in much better superconducting properties in terms of the superconducting transition temperature and volume fraction. In this article, we report on angle-resolved photoemission spectroscopy studies of a protect-annealed electron-doped cuprate $Pr_{0.9}La_{1.0}Ce_{0.1}CuO_4$ on annealing condition dependent superconducting and pseudo-gap properties. Remarkably, we found that the one showing a better superconducting property possesses almost no pseudo-gap while others have strong pseudo-gap feature due to an anti-ferromagnetic order.

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References

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