Muon-spin relaxation study of the spin correlations in the overdoped regime of electron-doped high-Tc cuprate superconductors

被引：5

作者：

Baqiya, Malik A. ^{[1
]}

Adachi, Tadashi ^{[2
]}

Takahashi, Akira ^{[3
]}

Konno, Takuya ^{[3
]}

Ohgi, Taro ^{[3
]}

Watanabe, Isao ^{[4
]}

Koike, Yoji ^{[3
]}

机构：

[1] Inst Teknol Sepuluh Nopember ITS, Fac Math & Nat Sci, Dept Phys, ITS Campus, Sukolilo 60111, Surabaya, Indonesia

[2] Sophia Univ, Dept Engn & Appl Sci, Chiyoda Ku, 7-1 Kioi Cho, Tokyo 1028554, Japan

[3] Tohoku Univ, Dept Appl Phys, Aoba Ku, 6-6-05 Aoba, Sendai, Miyagi 9808579, Japan

[4] RIKEN, Inst Phys & Chem Res, Nishina Ctr Accelerator Based Sci, Meson Sci Lab, 2-1 Hirosawa, Wako, Saitama 3510198, Japan

来源：

PHYSICAL REVIEW B | 2019年 / 100卷 / 06期

关键词：

MAGNETIC ORDER;

D O I：

10.1103/PhysRevB.100.064514

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In order to investigate the low-energy antiferromagnetic Cu-spin correlations and their relation to the superconductivity, we have performed muon-spin-relaxation (mu SR) measurements using single crystals of the electron-doped high-T-c cuprate Pr1-xLaCexCuO4 in the overdoped regime. The mu SR spectra have revealed that the Cu-spin correlations are developed in the overdoped samples where the superconductivity appears. The development of the Cu-spin correlations weakens with increasing x and is negligibly small in the heavily overdoped sample where the superconductivity almost disappears. Considering that the Cu-spin correlations also exist in the superconducting electron-doped cuprates in the undoped and underdoped regimes [T. Adachi et al., J. Phys . Soc. Jpn. 85, 114716 (2016)], our findings suggest that the mechanism of the superconductivity is related to the low-energy Cu-spin correlations in the entire doping regime of the electron-doped cuprates.

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页数：5

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