Observation of Bogoliubov Band Hybridization in the Optimally Doped Trilayer Bi2Sr2Ca2Cu3O10+δ

被引：18

作者：

Kunisada, So ^{[1
]}

Adachi, Shintaro ^{[1
,2
,3
]}

Sakai, Shiro ^{[4
]}

Sasaki, Nae ^{[2
]}

Nakayama, Mitsuhiro ^{[1
]}

Akebi, Shuntaro ^{[1
]}

Kuroda, Kenta ^{[1
]}

Sasagawa, Takao ^{[5
]}

Watanabe, Takao ^{[2
]}

Shin, Shik ^{[1
]}

Kondo, Takeshi ^{[1
]}

机构：

[1] Univ Tokyo, ISSP, Kashiwa, Chiba 2778581, Japan

[2] Hirosaki Univ, Grad Sch Sci & Technol, Hirosaki, Aomori 0368561, Japan

[3] Natl Inst Mat Sci, MANA, Tsukuba, Ibaraki 3050047, Japan

[4] RIKEN, Ctr Emergent Matter Sci, Wako, Saitama 3510198, Japan

[5] Tokyo Inst Technol, Mat & Struct Lab, Yokohama, Kanagawa 2268503, Japan

来源：

PHYSICAL REVIEW LETTERS | 2017年 / 119卷 / 21期

关键词：

SUPERCONDUCTORS;

D O I：

10.1103/PhysRevLett.119.217001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using a laser-excited angle-resolved photoemission spectroscopy capable of bulk sensitive and high-energy resolution measurements, we reveal a new phenomenon of superconductors in the optimally doped trilayer Bi2Sr2Ca2Cu3O10+delta. We observe a hybridization of the Bogoliubov bands derived from the inner and outer CuO2 planes with different magnitudes of energy gaps. Our data clearly exhibit the splitting of coherent peaks and the consequent enhancement of spectral gaps. These features are reproduced by model calculations, which indicate that the gap enhancement extends over a wide range of Fermi surface up to the antinode. The significant modulation of electron pairing uncovered here might be a crucial factor to achieve the highest critical temperature in the trilayer cuprates.

引用

页数：5

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