Observation of dx2-y2-like superconducting gap in an electron-doped high-temperature superconductor

被引：101

作者：

Sato, T

Kamiyama, T

Takahashi, T ^{[2
]}

Kurahashi, K

Yamada, K

机构：

[1] Kyoto Univ, Kyoto Univ, Inst Chem Res, Uji, Kyoto 6110011, Japan

[2] Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan

来源：

SCIENCE | 2001年 / 291卷 / 5508期

关键词：

D O I：

10.1126/science.1058021

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

High-resolution angle-resolved photoemission spectroscopy of the electron-doped high-temperature superconductor Nd2-xCexCuO4 (x = 0.15, transition temperature T-c = 22 K) has found the quasiparticle signature as well as the anisotropic d(x2-y2)-like superconducting gap. The spectral line shape at the superconducting state shows a strong anisotropic nature of the many-body interaction. The result suggests that the electron-hole symmetry is present in the high-temperature superconductors.

引用

页码：1517 / 1519

页数：3

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