Susceptibility of a Magnetic Impurity in Two-Dimensional Disordered Electron Systems.

• Ohashi Takuma

  Department of Applied Physics, Osaka University, Suita, Osaka 565-0871

• Suga Sei-ichiro

  Department of Applied Physics, Osaka University, Suita, Osaka 565-0871

抄録

We investigate the Kondo effect in two-dimensional disordered electron systems using a finite-temperature quantum Monte Carlo method. Depending on the position of a magnetic impurity, the local moment is screened or unscreened by the spin of the conduction electron. The results suggest that the Kondo temperature takes different values depending on the position of a magnetic impurity. We show that the distribution of the Kondo temperature becomes wide and the weight at T_K=0 becomes large as randomness increases. The average susceptibility shows a weak power-law divergence at low temperature in strongly disordered systems, indicating a non-Fermi-liquid behavior. We calculate the correlation function between the local moment and the spin of the conduction electron. The results are discussed in connection with Kondo screening.

収録刊行物

• Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ

  Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ 71 (5), 1246-1249, 2002

  一般社団法人 日本物理学会

キーワード

• Kondo effect
• random potential
• susceptibility
• Kondo temperature
• spin correlation function

詳細情報

• CRID: 1390001204185247872
• NII論文ID: 210000103663
• NII論文ID: 110001971711
• NII書誌ID: AA00704814
• DOI: 10.1143/jpsj.71.1246
• BIBCODE: 2002JPSJ...71.1246O
• ISSN: 13474073
• ISSN: 00319015
• NDL書誌ID: 6162935
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6162935
• Web Site: http://journals.jps.jp/doi/pdf/10.1143/JPSJ.71.1246
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可