Epitaxial growth of hexagonal tungsten bronze Cs_xWO₃ films in superconducting phase region exceeding bulk limit

• Takuto Soma

• Kohei Yoshimatsu

• Akira Ohtomo

抄録

We report epitaxial synthesis of superconducting Cs x WO 3 ( x = 0.11, 0.20, and 0.31) films on Y-stabilized ZrO 2 (111) substrates. The hexagonal crystal structure was verified not only for the composition within the stable region of the bulk ( x = 0.20 and 0.31), but also for the out-of-range composition ( x = 0.11). The onset of the superconducting transition was recorded at 5.8 K for x = 0.11. We found a strong correlation between the superconducting transition temperature ( T C ) and the c -axis length, irrespective of the Cs content. These results indicated that the hidden superconducting phase region of hexagonal tungsten bronze is accessible using epitaxial synthesis of lightly doped films.

収録刊行物

• Applied Physics Express

  Applied Physics Express 9 (7), 075801-, 2016-06-20

  IOP Publishing

キーワード

• General Physics and Astronomy
• General Engineering

詳細情報

• CRID: 1360003449884596096
• NII論文ID: 210000137993
• DOI: 10.7567/apex.9.075801
• ISSN: 18820786
• ISSN: 18820778
• Web Site: http://stacks.iop.org/1882-0786/9/i=7/a=075801/pdf
• Web Site: http://stacks.iop.org/1882-0786/9/i=7/a=075801?key=crossref.fd54660fe25b47008a88fa195fd21ca6
• Web Site: https://iopscience.iop.org/article/10.7567/APEX.9.075801
• Web Site: https://iopscience.iop.org/article/10.7567/APEX.9.075801/pdf
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