d-Site Substitution Effects in the d-p Model.

• Ono Yoshiaki

  Department of Physics, Nagoya University, Nagoya 464–01

• Deguchi Ken

  Faculty of Education, Tokoha Gakuen University, Shizuoka 420

• Matsuura Tamifusa

  Department of Physics, Nagoya University, Nagoya 464–01

• Kuroda Yoshihiro

  Department of Physics, Nagoya University, Nagoya 464–01

書誌事項

タイトル別名

• d-Site Substitution Effects in the d-p

抄録

Effects of d-site substitution in the d-p model simulating a CuO₂-plane in high-T_c cuprates are investigated using the slave boson technique and the 1/N-expansion method. It is found that nonmagnetic impurities, e.g., Zn, substituted for Cu, strongly scatter the p-holes and drastically decrease hole densities at the neighboring O-sites. In the low doping region, the decrease reduces the Kondo temperature T_K at the neighboring Cu-sites. The repulsion U_pd between holes on the nearest neighbor Cu- and O-sites, which is known to enhance the charge susceptibility in the pure systems without impurities, turns out to promote the reduction of T_K due to the nonmagnetic impurity. Then, Cu d-spins in the vicinity of the impurity behave as local moments at temperatures higher than the reduced T_K.

収録刊行物

• Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ

  Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ 67 (1), 29-32, 1998

  一般社団法人 日本物理学会

キーワード

• high-T<SUB>c</SUB> cuprates
• d-p model
• nonmagnetic impurity
• Kondo temperature
• local moment

詳細情報

• CRID: 1390282679158710272
• NII論文ID: 210000101072
• NII論文ID: 110001978215
• NII書誌ID: AA00704814
• DOI: 10.1143/jpsj.67.29
• BIBCODE: 1998JPSJ...67...29.
• ISSN: 13474073
• ISSN: 00319015
• NDL書誌ID: 4395671
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4395671
• Web Site: http://journals.jps.jp/doi/pdf/10.1143/JPSJ.67.29
• 本文言語コード: en
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