Exploring possible Fermi surface nesting and the nature of heavy quasiparticles in the spin-triplet superconductor candidate CeRh2As2

被引：5

作者：

Chen, Bo ^{[1
]}

Liu, Hao ^{[1
]}

Wu, Qi-Yi ^{[1
]}

Zhang, Chen ^{[1
]}

Ye, Xue-Qing ^{[1
]}

Zhao, Yin-Zou ^{[1
]}

Song, Jiao-Jiao ^{[1
]}

Tian, Xin-Yi ^{[1
]}

Tan, Ba-Lei ^{[1
]}

Liu, Zheng-Tai ^{[2
]}

Ye, Mao ^{[2
]}

Chen, Zhen-Hua ^{[2
]}

Huang, Yao-Bo ^{[2
]}

Shen, Da-Wei ^{[3
,4
]}

Yuan, Ya-Hua ^{[1
]}

He, Jun ^{[1
]}

Duan, Yu-Xia ^{[1
]}

Meng, Jian-Qiao ^{[1
]}

机构：

[1] Cent South Univ, Sch Phys, Changsha 410083, Hunan, Peoples R China

[2] Chinese Acad Sci, Shanghai Adv Res Inst, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China

[3] Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230026, Anhui, Peoples R China

[4] Univ Sci & Technol China, Sch Nucl Sci & Technol, Hefei 230026, Anhui, Peoples R China

来源：

PHYSICAL REVIEW B | 2024年 / 110卷 / 04期

基金：

中国国家自然科学基金;

关键词：

TRANSITION;

D O I：

10.1103/PhysRevB.110.L041120

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this Letter, we investigate the electronic structure of a spin-triplet superconductor candidate CeRh2As2 using high-resolution angle-resolved photoemission spectroscopy and density functional theory calculations. Notably, possible Fermi surface nesting hints at connections to magnetic excitation or quadrupole density wave phenomena, elucidating the superconducting mechanisms. Measured band structures reveal primarily localized 4 f electrons, with minor itinerant contributions. Additionally, a transition from localized to itinerant behavior and significant c- f hybridization anisotropy underscore the role of f electrons in shaping electronic properties. These findings deepen our understanding of CeRh2As2's unconventional superconductivity and magnetism. Further exploration promises advances in superconductivity research.

引用

页数：7