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Title: Electronic structure of heavy fermion system CePt 2In 7 from angle-resolved photoemission spectroscopy

We have carried out high-resolution angle-resolved photoemission measurements on the Cebased heavy fermion compound CePt 2In 7 that exhibits stronger two-dimensional character than the prototypical heavy fermion system CeCoIn 5. Multiple Fermi surface sheets and a complex band structure are clearly resolved. We have also performed detailed band structure calculations on CePt 2In 7. The good agreement found between our measurements and the calculations suggests that the band renormalization effect is rather weak in CePt 2In 7. A comparison of the common features of the electronic structure of CePt 2In 7 and CeCoIn5 indicates that CeCoIn 5 shows a much stronger band renormalization effect than CePt 2In 7. These results provide new information for understanding the heavy fermion behaviors and unconventional superconductivity in Ce-based heavy fermion systems.
Authors:
 [1] ;  [2] ;  [3] ;  [1] ;  [4] ; ORCiD logo [5] ; ORCiD logo [5] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [2] ;  [2] ;  [6] ;  [6] ;  [3] more »;  [7] « less
  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)
Publication Date:
Report Number(s):
LA-UR-17-30413
Journal ID: ISSN 1674-1056
Grant/Contract Number:
AC52-06NA25396; 2015CB921300; 2013CB921700; 2013CB921904; XDB07020300; 91421304; 14XNLQ03; 16XNLQ01
Type:
Accepted Manuscript
Journal Name:
Chinese Physics. B
Additional Journal Information:
Journal Volume: 26; Journal Issue: 7; Journal ID: ISSN 1674-1056
Publisher:
IOP Publishing
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Natural Science Foundation of China (NNSFC)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE; Material Science; heavy fermion; ARPES; electronic structure; band calculation
OSTI Identifier:
1431068