Pairing Symmetry in Single-Layer Tetragonal Tl <sub>2</sub> Ba <sub>2</sub> CuO <sub>β+δ</sub> Superconductors
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- C. C. Tsuei
- C. C. Tsuei, J. R. Kirtley, M. Rupp, J. Z. Sun, A. Gupta, and M. B. Ketchen are at IBM Research Division, Thomas J. Watson Research Center, Yorktown Heights, NY 10598, USA.
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- J. R. Kirtley
- C. C. Tsuei, J. R. Kirtley, M. Rupp, J. Z. Sun, A. Gupta, and M. B. Ketchen are at IBM Research Division, Thomas J. Watson Research Center, Yorktown Heights, NY 10598, USA.
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- M. Rupp
- C. C. Tsuei, J. R. Kirtley, M. Rupp, J. Z. Sun, A. Gupta, and M. B. Ketchen are at IBM Research Division, Thomas J. Watson Research Center, Yorktown Heights, NY 10598, USA.
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- J. Z. Sun
- C. C. Tsuei, J. R. Kirtley, M. Rupp, J. Z. Sun, A. Gupta, and M. B. Ketchen are at IBM Research Division, Thomas J. Watson Research Center, Yorktown Heights, NY 10598, USA.
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- A. Gupta
- C. C. Tsuei, J. R. Kirtley, M. Rupp, J. Z. Sun, A. Gupta, and M. B. Ketchen are at IBM Research Division, Thomas J. Watson Research Center, Yorktown Heights, NY 10598, USA.
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- M. B. Ketchen
- C. C. Tsuei, J. R. Kirtley, M. Rupp, J. Z. Sun, A. Gupta, and M. B. Ketchen are at IBM Research Division, Thomas J. Watson Research Center, Yorktown Heights, NY 10598, USA.
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- C. A. Wang
- C. A. Wang, Z. F. Ren, and J. H. Wang are at Superconducting Materials Laboratory, Natural Sciences and Mathematics Complex, State University of New York, Buffalo, NY 14260, USA.
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- Z. F. Ren
- C. A. Wang, Z. F. Ren, and J. H. Wang are at Superconducting Materials Laboratory, Natural Sciences and Mathematics Complex, State University of New York, Buffalo, NY 14260, USA.
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- J. H. Wang
- C. A. Wang, Z. F. Ren, and J. H. Wang are at Superconducting Materials Laboratory, Natural Sciences and Mathematics Complex, State University of New York, Buffalo, NY 14260, USA.
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- M. Bhushan
- M. Bhushan is at Department of Physics, State University of New York, Stony Brook, NY 11794, USA.
書誌事項
- 公開日
- 1996-01-19
- DOI
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- 10.1126/science.271.5247.329
- 公開者
- American Association for the Advancement of Science (AAAS)
この論文をさがす
説明
<jats:p> A high-resolution scanning superconducting quantum interference device microscopy study of tetragonal single-layer Tl <jats:sub>2</jats:sub> Ba <jats:sub>2</jats:sub> CuO <jats:sub>6+δ</jats:sub> films, deposited on tricrystal SrTiO <jats:sub>3</jats:sub> substrates, demonstrates the effect of spontaneously generated half flux quanta. This observation shows that in addition to YBa <jats:sub>2</jats:sub> Cu <jats:sub>3</jats:sub> O <jats:sub>7</jats:sub> , the order parameter symmetry in Tl <jats:sub>2</jats:sub> Ba <jats:sub>2</jats:sub> CuO <jats:sub>6+δ</jats:sub> is consistent with that of a <jats:italic>d</jats:italic> <jats:sub> <jats:italic>x</jats:italic> <jats:sup>2</jats:sup> - <jats:italic>y</jats:italic> <jats:sup>2</jats:sup> </jats:sub> pair state. This result also rules out any bilayer or twinning effects and any pairing that is incompatible with the fourfold rotational symmetry as in the Tl <jats:sub>2</jats:sub> Ba <jats:sub>2</jats:sub> CuO <jats:sub>6+δ</jats:sub> superconducting system. </jats:p>
収録刊行物
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- Science
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Science 271 (5247), 329-332, 1996-01-19
American Association for the Advancement of Science (AAAS)