Electronic structure of heavy fermion system CePt2In7 from angle-resolved photoemission spectroscopy

We have carried out high-resolution angle-resolved photoemission measurements on the Cebased heavy fermion compound CePt2In7 that exhibits stronger two-dimensional character than the prototypical heavy fermion system CeCoIn5. Multiple Fermi surface sheets and a complex band structure are clearly res...

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Bibliographic Details
Published in:arXiv.org 2017-06
Main Authors: Shen, Bing, Li, Yu, Liu, Kai, Lyu, Shoupeng, Jia, Xiaowen, Bauer, E D, Thompson, J D, Zhang, Yan, Wang, Chenlu, Hu, Cheng, Ding, Ying, Sun, Xuan, Hu, Yong, Liu, Jing, Gao, Qiang, Zhao, Lin, Liu, Guodong, Xu, Zuyan, Chen, Chuangtian, Lu, Zhongyi, Zhou, X J
Format: Article
Language:English
Subjects:
Band structure
Band structure of solids
Electronic structure
Fermi surfaces
Fermions
Heavy fermion systems
Mathematical analysis
Photoelectric emission
Unconventional superconductivity
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Summary:We have carried out high-resolution angle-resolved photoemission measurements on the Cebased heavy fermion compound CePt2In7 that exhibits stronger two-dimensional character than the prototypical heavy fermion system CeCoIn5. Multiple Fermi surface sheets and a complex band structure are clearly resolved. We have also performed detailed band structure calculations on CePt2In7. The good agreement found between our measurements and the calculations suggests that the band renormalization effect is rather weak in CePt2In7. A comparison of the common features of the electronic structure of CePt2In7 and CeCoIn5 indicates that CeCoIn5 shows a much stronger band renormalization effect than CePt2In7. These results provide new information for understanding the heavy fermion behaviors and unconventional superconductivity in Ce-based heavy fermion systems.
ISSN:2331-8422
DOI:10.48550/arxiv.1706.05794