Evolution of the Kondo lattice electronic structure above the transport coherence temperature
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720,
- Department of Physics, Randall Laboratory, University of Michigan, Ann Arbor, MI 48109,
- National High Magnet Field Laboratory, Los Alamos National Laboratory, Los Alamos, NM 84745,
- Department of Physics, University of California San Diego, La Jolla, CA 92903,
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 37673, Korea,
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 37673, Korea,, Division of Advanced Nuclear Engineering, POSTECH, Pohang 37673, Korea
Significance The temperature ( )-dependent evolution of the Kondo lattice electronic structure is a long-standing topic of theoretical and experimental investigation, still lacking a truly microscopic theory that agrees with a full experimental characterization. Here multiple characteristic scales of the interaction of localized moments with conduction electrons in the Kondo lattice CeCo are identified and investigated using angle-resolved photoemission measurements that substantiate dynamical mean-field theory which newly includes the full realism of crystalline electric-field (CEF) splittings. Thereby errors in the itinerant versus localized -state classification from standard density functional theory are corrected, microscopic insight into the broad -range crossover of -hybridization effects is gained, and a prediction of CEF degeneracy crossover below the lattice coherence is made.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division
- Grant/Contract Number:
- AC02-05CH11231; FG02-07ER46379; DEFG02-04-ER46105; 89233218CNA000001; FG02-04ER46105
- OSTI ID:
- 1658389
- Alternate ID(s):
- OSTI ID: 1829645
- Report Number(s):
- LA-UR-20-29086
- Journal Information:
- Proceedings of the National Academy of Sciences of the United States of America, Journal Name: Proceedings of the National Academy of Sciences of the United States of America Vol. 117 Journal Issue: 38; ISSN 0027-8424
- Publisher:
- Proceedings of the National Academy of SciencesCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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