Detailed Structure of the Magnetic Excitation Spectra of YBa 2Cu 3O y and Its Implication on the Physical Characteristics of the Electron System

Masafumi Ito, Hiroshi Harashina, Yukio Yasui, Masaki Kanada, Satoshi Iikubo, Masatoshi Sato, Akito Kobayashi, Kazuhisa Kakurai

研究成果: Contribution to journalArticle査読

18 被引用数 (Scopus)

抄録

Detailed structure of the magnetic excitation spectra χ″(q, ω) of the superconducting oxide YBa 2Cu 3O 6.5 (the transition temperature T c ≅ 52K) in the wave vector (q)- and the energy(ω)-space, and its temperature (T) dependence have been studied. By adopting an effective energy dispersion of the quasi particles which can reproduce the shape of the Fermi surface and by introducing the exchange interaction between the Cu spins, a rather satisfactory agreement between the calculation and the experimentally observed data can be obtained. In the study, it has been found that the effects of the quasi particle-energy broadening on the excitation spectra χ″ (q,ω) is important. The sharp resonance peak observed at w ∼ 40 meV for the optimally doped system of YBa 2Cu 3O y can be naturally reproduced by the present model.

本文言語英語
ページ(範囲)265-270
ページ数6
ジャーナルjournal of the physical society of japan
71
1
DOI
出版ステータス出版済み - 1 2002
外部発表はい

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

フィンガープリント 「Detailed Structure of the Magnetic Excitation Spectra of YBa <sub>2</sub>Cu <sub>3</sub>O <sub>y</sub> and Its Implication on the Physical Characteristics of the Electron System」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。

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