Preparation and Nanoscale Characterization of Highly Stable YBa₂Cu₃O_7-δ Thin Films

• Masashi Kawasaki

• Jianping Gong

• Masashi Nantoh

• Tetsuya Hasegawa

• Koichi Kitazawa

• Masao Kumagai

• Kiyoto Hirai

• Kenichi Horiguchi

• Mamoru Yoshimoto

• Hideomi Koinuma

抄録

High-quality c -axis-oriented YBa 2 Cu 3 O 7-δ (YBCO) films were prepared using the laser ablation method. Films with a full width at half-maximum of the (005) X-ray diffraction peak as narrow as 0.1° and an χ min of Rutherford backscattering spectrometry as low as 3.5% were obtained by optimizing the experimental conditions. The atomic image and superconducting gap at 4.2 K were simultaneously observed for the first time on these high-quality YBCO films by scanning tunneling microscopy and scanning tunneling spectroscopy. Such observations, even after the film was stored in air for three weeks, indicates that YBCO film is sufficiently chemically and physically stable to prevent significant deterioration in superconductivity at the film surface.

収録刊行物

• Japanese Journal of Applied Physics

  Japanese Journal of Applied Physics 32 (4R), 1612-, 1993-04-01

  IOP Publishing

キーワード

• General Physics and Astronomy
• General Engineering

詳細情報

• CRID: 1360003446841750400
• NII論文ID: 30021862543
• NII論文ID: 210000033364
• NII書誌ID: AA10457675
• DOI: 10.1143/jjap.32.1612
• ISSN: 13474065
• ISSN: 00214922
• Web Site: https://iopscience.iop.org/article/10.1143/JJAP.32.1612
• Web Site: https://iopscience.iop.org/article/10.1143/JJAP.32.1612/pdf
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