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

Journal Article · · Chinese Physics. B
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  1. Chinese Academy of Sciences (CAS), Beijing (China). Inst. of Physics, National Lab. for Superconductivity, Beijing National Lab. for Condensed Matter Physics (BNLCP-CAS); Univ. of Chinese Academy of Sciences, Beijing (China)
  2. Chinese Academy of Sciences (CAS), Beijing (China). Inst. of Physics, National Lab. for Superconductivity, Beijing National Lab. for Condensed Matter Physics (BNLCP-CAS)
  3. Renmin Univ. of China, Beijing (China). Dept. of Physics and Beijing Key Lab. of Opto-electronic Functional Materials & Micro-nano Devices
  4. Chinese Academy of Sciences (CAS), Beijing (China). Inst. of Physics, National Lab. for Superconductivity, Beijing National Lab. for Condensed Matter Physics (BNLCP-CAS); Military Transportation Univ., Tianjin (China)
  5. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  6. Chinese Academy of Sciences (CAS), Beijing (China). Technical Inst. of Physics and Chemistry
  7. Chinese Academy of Sciences (CAS), Beijing (China). Inst. of Physics, National Lab. for Superconductivity, Beijing National Lab. for Condensed Matter Physics (BNLCP-CAS); Univ. of Chinese Academy of Sciences, Beijing (China); Collaborative Innovation Center of Quantum Matter, Beijing (China)

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.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Natural Science Foundation of China (NSFC)
Grant/Contract Number:
AC52-06NA25396; 2015CB921300; 2013CB921700; 2013CB921904; XDB07020300; 91421304; 14XNLQ03; 16XNLQ01
OSTI ID:
1431068
Report Number(s):
LA-UR-17-30413
Journal Information:
Chinese Physics. B, Vol. 26, Issue 7; ISSN 1674-1056
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 5 works
Citation information provided by
Web of Science

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