ARPES study of LSCO and PBCO: Electronic structure of the stripe phase and the 1/4-filled Cu-O chains

T. Mizokawa*, A. Ino, T. Yoshida, A. Fujimori, C. Kim, H. Eisaki, Z. X. Shen, S. Horii, T. Kakeshita, S. Uchida, K. Tomimoto, S. Tajima, Yuh Yamada

*この研究の対応する著者

研究成果: Article査読

抄録

We have studied the electronic structure of the stripe phase in La2-xSrxCuO4 (LSCO) and the Cu-O chains in PrBa2Cu3O7, (Pr123) and PrBa2Cu408 (Pr124) using angle-resolved photoemission spectroscopy (ARPES). In LSCO with x = 0.12, the spectral feature near the Fermi level (EF) is almost fiat from (π, 0) to (π, π/4), namely, along the stripe direction in LSCO. While the 1/4-filled chain in Pr123 has a band gap because of charge ordering, the metallic chain in Pr124 shows a dispersive feature which reaches EF at ∼(π, π/4) and a flat feature near EF which is similar to that observed in the stripe phase of LSCO. Although Pr124 shows spectral-weight suppression near EF due to the instability toward charge ordering, the suppression is imperfect and Pr124 has a substantial spectral weight at EF probably due to the chain-chain coupling. This is in sharp contrast to LSC0 with the perfect gap opening near (π, π/4). The difference between the Stripe phase in LSCO and the coupled chains of Pr124 would be derived from the interaction between the stripe and the neighboring Cu spins which suppresses the charge ordering along the stripe.

本文言語English
ページ(範囲)3602-3609
ページ数8
ジャーナルInternational Journal of Modern Physics B
14
29-31
DOI
出版ステータスPublished - 2000 12 20
外部発表はい

ASJC Scopus subject areas

  • 統計物理学および非線形物理学
  • 凝縮系物理学

フィンガープリント

「ARPES study of LSCO and PBCO: Electronic structure of the stripe phase and the 1/4-filled Cu-O chains」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル