Suppression of Pseudogap Behavior and Antiferromagnetic Fluctuations by Electron Doping in T′-La1.8Eu0.2CuO4-yFyStudied by 63,65Cu NMR

Masaki Watai, Yongsun Lee, Hideto Fukazawa, Yoh Kohori, Toshiki Sunohara, Kota Shiosaka, Takayuki Kawamata, Yoji Koike

研究成果: Article査読

抄録

We performed 63,65Cu NMR measurements of an electron-doped high-Tc cuprate superconductor T′-La1.8Eu0.2-CuO4-yFy (0 ≤ y ≤ 0.125) having Nd2CuO4-type structure (so-called T′-structure). Pseudogap behavior is observed in the lightly electron-doped region of y ≤ 0.075. The nuclear spin-lattice relaxation rate 1/T1 revealed that the antiferromagnetic spin fluctuations are suppressed by electron doping. These behaviors are like those reported in the optimum- and over-doped region of hole-doped high-Tc cuprate superconductors. It appears that electrons are more effectively doped through partial substitution in T′-La1.8Eu0.2CuO4-yFy than in isostructural T′-Pr1.7-xLa0.7CexCuO4.

本文言語English
論文番号023704
ジャーナルjournal of the physical society of japan
90
2
DOI
出版ステータスPublished - 2021 2 15

ASJC Scopus subject areas

  • 物理学および天文学(全般)

フィンガープリント

「Suppression of Pseudogap Behavior and Antiferromagnetic Fluctuations by Electron Doping in T′-La<sub>1.8</sub>Eu<sub>0.2</sub>CuO<sub>4-y</sub>F<sub>y</sub>Studied by <sup>63,65</sup>Cu NMR」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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