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Title: Band Dependent Interlayer f -Electron Hybridization in CeRhIn 5

Abstract

A key issue in heavy fermion research is how subtle changes in the hybridization between the 4 f (5 f ) and conduction electrons can result in fundamentally different ground states. CeRhIn 5 stands out as a particularly notable example: when replacing Rh with either Co or Ir, antiferromagnetism gives way to superconductivity. In this photoemission study of CeRhIn 5 , we demonstrate that the use of resonant angle-resolved photoemission spectroscopy with polarized light allows us to extract detailed information on the 4 f crystal field states and details on the 4 f and conduction electron hybridization, which together determine the ground state. We directly observe weakly dispersive Kondo resonances of f electrons and identify two of the three Ce4 f $$^{1}_{5/2}$$ crystal-electric-field levels and band-dependent hybridization, which signals that the hybridization occurs primarily between the Ce 4 f states in the CeIn3 layer and two more three-dimensional bands composed of the Rh 4 d and In 5 p orbitals in the RhIn2 layer. Our conclusions allow us to connect the properties observed at elevated temperatures with the unusual low-temperature properties of this enigmatic heavy fermion compound.

Authors:
 [1];  [2];  [2];  [2];  [2];  [2];  [2];  [2];  [3];  [3];  [4];  [4];  [5];  [5];  [6]; ORCiD logo [7];  [8];  [4];  [9]
  1. Fudan Univ., Shanghai (China); China Academy of Engineering Physics, Mianyang (China)
  2. Fudan Univ., Shanghai (China)
  3. China Academy of Engineering Physics, Mianyang (China)
  4. Zhejiang Univ., Hangzhou (China)
  5. Paul Scherrer Inst. (PSI), Villigen (Switzerland)
  6. Harwell Science and Innovation Campus, Didcot (United Kingdom)
  7. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  8. Zhejiang Univ., Hangzhou (China); Collaborative Innovation Center of Advanced Microstructures, Nanjing (China)
  9. Fudan Univ., Shanghai (China); Collaborative Innovation Center of Advanced Microstructures, Nanjing (China)
Publication Date:
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 (NSFC); USDOE
OSTI Identifier:
1525818
Alternate Identifier(s):
OSTI ID: 1422863
Report Number(s):
LA-UR-18-21614
Journal ID: ISSN 0031-9007; PRLTAO
Grant/Contract Number:  
89233218CNA000001
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 120; Journal Issue: 6; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Electronic structure; Heavy-fermion systems; Angle-resolved photoemission spectroscopy

Citation Formats

Chen, Q. Y., Xu, D. F., Niu, X. H., Peng, R., Xu, H. C., Wen, C. H. P., Liu, X., Shu, L., Tan, S. Y., Lai, X. C., Zhang, Y. J., Lee, H., Strocov, V. N., Bisti, F., Dudin, P., Zhu, Jianxin, Yuan, H. Q., Kirchner, Stefan, and Feng, D. L.. Band Dependent Interlayer f -Electron Hybridization in CeRhIn5. United States: N. p., 2018. Web. https://doi.org/10.1103/PhysRevLett.120.066403.
Chen, Q. Y., Xu, D. F., Niu, X. H., Peng, R., Xu, H. C., Wen, C. H. P., Liu, X., Shu, L., Tan, S. Y., Lai, X. C., Zhang, Y. J., Lee, H., Strocov, V. N., Bisti, F., Dudin, P., Zhu, Jianxin, Yuan, H. Q., Kirchner, Stefan, & Feng, D. L.. Band Dependent Interlayer f -Electron Hybridization in CeRhIn5. United States. https://doi.org/10.1103/PhysRevLett.120.066403
Chen, Q. Y., Xu, D. F., Niu, X. H., Peng, R., Xu, H. C., Wen, C. H. P., Liu, X., Shu, L., Tan, S. Y., Lai, X. C., Zhang, Y. J., Lee, H., Strocov, V. N., Bisti, F., Dudin, P., Zhu, Jianxin, Yuan, H. Q., Kirchner, Stefan, and Feng, D. L.. Fri . "Band Dependent Interlayer f -Electron Hybridization in CeRhIn5". United States. https://doi.org/10.1103/PhysRevLett.120.066403. https://www.osti.gov/servlets/purl/1525818.
@article{osti_1525818,
title = {Band Dependent Interlayer f -Electron Hybridization in CeRhIn5},
author = {Chen, Q. Y. and Xu, D. F. and Niu, X. H. and Peng, R. and Xu, H. C. and Wen, C. H. P. and Liu, X. and Shu, L. and Tan, S. Y. and Lai, X. C. and Zhang, Y. J. and Lee, H. and Strocov, V. N. and Bisti, F. and Dudin, P. and Zhu, Jianxin and Yuan, H. Q. and Kirchner, Stefan and Feng, D. L.},
abstractNote = {A key issue in heavy fermion research is how subtle changes in the hybridization between the 4f (5f) and conduction electrons can result in fundamentally different ground states. CeRhIn5 stands out as a particularly notable example: when replacing Rh with either Co or Ir, antiferromagnetism gives way to superconductivity. In this photoemission study of CeRhIn5, we demonstrate that the use of resonant angle-resolved photoemission spectroscopy with polarized light allows us to extract detailed information on the 4f crystal field states and details on the 4f and conduction electron hybridization, which together determine the ground state. We directly observe weakly dispersive Kondo resonances of f electrons and identify two of the three Ce4f$^{1}_{5/2}$ crystal-electric-field levels and band-dependent hybridization, which signals that the hybridization occurs primarily between the Ce 4f states in the CeIn3 layer and two more three-dimensional bands composed of the Rh 4d and In 5p orbitals in the RhIn2 layer. Our conclusions allow us to connect the properties observed at elevated temperatures with the unusual low-temperature properties of this enigmatic heavy fermion compound.},
doi = {10.1103/PhysRevLett.120.066403},
journal = {Physical Review Letters},
number = 6,
volume = 120,
place = {United States},
year = {2018},
month = {2}
}

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Cited by: 8 works
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Figures / Tables:

FIG. 1 FIG. 1: FSs of CeRhIn5 at 12 K. (a) Calculated $α$ , $β$ and $γ$ FSs of CeRhIn5, when considering fully localized $f$ electrons. (b) and (c) Photoemission intensity maps in the (b) $ΓZAM$ and (c) $ΓZRX$ plane. The dispersion of $γ$ is not marked due to its pronounced $k$$z$more » dependence.The momentum cuts taken with 546 and 582 eV has been marked with the green solid line in (b) and (c). (d) and (e) Photoemission intensity maps in the (d) $ΓXM$ and (e) $ZAR$ plane taken with 582 and 546 eV photons. All data were integrated over a window of ($E$$F$ -20 meV, $E$$F$+20 meV).« less

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    Works referencing / citing this record:

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      Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.