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Title: Evolution of ground-state wave function in CeCoIn 5 upon Cd or Sn doping

We present linear polarization-dependent soft-x-ray absorption spectroscopy data at the Ce M 4,5 edges of Cd- and Sn-doped CeCoIn 5. The 4f ground-state wave functions have been determined for their superconducting, antiferromagnetic, and paramagnetic ground states. The absence of changes in the wave functions in CeCo (In 1- xCd x) 5 suggests that the 4f-conduction-electron (c f) hybridization is not affected by global Cd doping, thus supporting the interpretation of magnetic droplets nucleating long-range magnetic order. This is contrasted by changes in the wave function due to Sn substitution. Increasing Sn in CeCo (In 1 - ySn y) 5 compresses the 4f orbitals into the tetragonal plane of these materials, suggesting enhanced c f hybridization with the in-plane In(1) atoms and a homogeneous altering of the electronic structure. As these experiments show, the 4 f wave functions are a very sensitive probe of small changes in the hybridization of 4f and conduction electrons, even conveying information about direction dependencies.
Authors:
 [1] ;  [1] ;  [2] ;  [3] ;  [4] ; ORCiD logo [4] ; ORCiD logo [4] ;  [4] ; ORCiD logo [4] ;  [5] ;  [5] ;  [6] ;  [6] ;  [7] ;  [3] ;  [2]
  1. Univ. of Cologne (Germany). Inst. of Physics II
  2. Univ. of Cologne (Germany). Inst. of Physics II; Max Planck Inst. for Chemical Physics of Solids, Dresden (Germany)
  3. Max Planck Inst. for Chemical Physics of Solids, Dresden (Germany)
  4. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  5. ALBA Synchrotron Light Source, Barcelona (Spain)
  6. European Synchrotron Radiation Facility (ESRF), Grenoble (France)
  7. Hiroshima Univ., Higahsi-Hiroshima (Japan). Dept. of Quantum Matter
Publication Date:
Report Number(s):
LA-UR-17-30510
Journal ID: ISSN 2469-9950; PRBMDO
Grant/Contract Number:
AC52-06NA25396; NSF-DMR-1708199
Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 97; Journal Issue: 4; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
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); German Research Foundation (DFG)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Material Science
OSTI Identifier:
1431074
Alternate Identifier(s):
OSTI ID: 1417230