Magnetic phase diagrams of electron-doped high-Tc cuprates Pr1-xLaCexCuO4-δ and Nd2-xCexCuO4-δ studied by μSR measurements

T. Kubo, T. Uefuji, M. Fujita, K. Yamada, I. Watanabe, K. Nagamine

研究成果: Article査読

11 被引用数 (Scopus)

抄録

Magnetic phase diagrams of electron-doped high-temperature superconducting (SC) cuprates Nd2-xCexCuO4-δ (NCCO) and Pr1-xLaCexCuO4-δ (PLCCO) has been studied by means of muon spin relaxation and rotation (μSR) measurements. Two characteristic temperatures TN1 and TN2 are defined in the zero-field μSR (ZF-μSR) measurements for both NCCO and PLCCO. Below T = TN1, which approximately corresponds to the previously reported Néel temperature, an exponential type muon spin relaxation firstly appears in the time spectra and upon cooling below around TN2 another faster component of relaxation or muon spin rotation is observed similarly. Although critical concentration for the bulk superconductivity is different between the two systems, antiferromagnetic (AF) phase contacts with the SC phase partially overlapping in both systems and AF phase is suddenly reduced in the appearance of SC phase, suggesting a competition between superconductivity and AF order. Our quantitative analyses of the AF volume fraction clearly demonstrate this.

本文言語English
ページ(範囲)354-359
ページ数6
ジャーナルPhysica C: Superconductivity and its applications
378-381
PART 1
DOI
出版ステータスPublished - 2002 10 1
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • エネルギー工学および電力技術
  • 電子工学および電気工学

フィンガープリント

「Magnetic phase diagrams of electron-doped high-T<sub>c</sub> cuprates Pr<sub>1-x</sub>LaCe<sub>x</sub>CuO<sub>4-δ</sub> and Nd<sub>2-x</sub>Ce<sub>x</sub>CuO<sub>4-δ</sub> studied by μSR measurements」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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