Suppression of hybridization by Cd doping in
- Science and Technology on Surface Physics and Chemistry Laboratory, Mianyang (China)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Fudan Univ., Shanghai (China)
- Chinese Academy of Sciences (CAS), Shanghai (China). Shanghai Institute of Applied Physics
- Fudan Univ., Shanghai (China); Univ. of Science and Technology of China, Hefei (China); Collaborative Innovation Center of Advanced Microstructures, Nanjing (China)
The interaction between superconductivity and magnetism in heavy fermion compounds has remained a challenge ever since the discovery of unconventional superconductivity in such systems. The heavy fermion ( = Co,Rh,Ir) family offers a good platform to study the relationship between superconductivity and magnetism, whose ground state can be easily tuned by chemical doping, making the ambient-pressure experimental techniques like angle-resolved photoemission spectroscopy possible to address this old but engaging question. By Cd doping, the superconducting state of can be smoothly tuned to an antiferromagnetic ground state, which can be reversed by applying pressure. In this study, we present an electronic structure study of with an antiferromagnetic ground state and the results are compared with . We found that the hybridization strength between the electrons and conduction electrons in has been suppressed by Cd doping, but still the Fermi surface includes a significant contribution from the Ce electrons. Our results find that the electronic tuning effect by Cd doping arises from the change in the hybridization strength between the Ce electrons and conduction electrons caused by the Cd dopant, and the subtle interplay between itinerancy and localization of the electrons determines the ground state.
- Research Organization:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; Science Challenge Project; National Natural Science Foundation of China (NSFC); National Key Research and Development Program of China
- Grant/Contract Number:
- 89233218CNA000001; TZ2016004; 11874330; 11974319; U1630248; 2017YFA0303104
- OSTI ID:
- 1819135
- Report Number(s):
- LA-UR-19-24910; TRN: US2214064
- Journal Information:
- Physical Review B, Vol. 100, Issue 23; ISSN 2469-9950
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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