Electronic Structure of Delafossite-Type Metallic Oxide PdCoO2

• Hasegawa Masashi

  Institute for Materials Research, Tohoku University

• Higuchi Tohru

  Department of Applied Physics, Science University of Tokyo

• Tanaka Masayuki

  Toshiba Corparation Semiconductor Company

• Tsukamoto Takeyo

  Department of Applied Physics, Science University of Tokyo

• Shin Shik

  Institute for Solid State Physics, University of Tokyo

• Takei Humihiko

  Graduate School of Science, Osaka University

書誌事項

タイトル別名

• Electronic Structure of Delafossite-Type Metallic Oxide PdCoO<SUB>2</SUB>

抄録

The electronic structure of metallic oxide PdCoO₂ has been investigated by photoemission and inverse photoemission spectroscopies. It is found that the finite density of states at the Fermi level in the spectra is observed at the low photon energy where the ionization cross-section of Pd 4d increases with decreasing photon energy. Resonant photoemission spectra of PdCoO₂ at photon energies near the Co 3p to 3d and Pd 4p to 4d absorption thresholds, indicate no density of states at the Fermi level in the partial density of states of Co 3d, and finite density of states at the Fermi level in the partial density of states of Pd 4d, respectively. These results indicate that the main contribution to the density of states at the Fermi level is Pd 4d and that the low resistivity of PdCoO₂ is attributable to the itinerancy of the Pd 4d electrons.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 42 (6), 961-964, 2001

  公益社団法人 日本金属学会

キーワード

• paradium cobalt oxide
• metallic delafossite-type oxide
• photoemission and inverse photoemission spectroscopies
• electronic structure
• electrical resistivity
• pseudogap

詳細情報

• CRID: 1390282679225074432
• NII論文ID: 130004451515
• NII論文ID: 10006549471
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.42.961
• COI: 1:CAS:528:DC%2BD3MXlvVGnurc%3D
• ISSN: 13475320
• ISSN: 13459678
• NDL書誌ID: 5823924
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I5823924
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/42/6/42_6_961/_pdf
• 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