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|Title:||Dualism of the 4f electrons and its relation to high-Temperature antiferromagnetism in the heavy-fermion compound YbCoC2|
|Authors:||Salamatin, D. A.|
Sidorov, V. A.
Chtchelkatchev, N. M.
Magnitskaya, M. V.
Petrova, A. E.
Zibrov, I. P.
Fomicheva, L. N.
Tsvyashchenko, A. V.
|Publisher:||American Physical Society|
|Citation:||Dualism of the 4f electrons and its relation to high-Temperature antiferromagnetism in the heavy-fermion compound YbCoC2 / D. A. Salamatin, N. Martin, V. A. Sidorov, et al. — DOI 10.1103/PhysRevB.101.100406 // Physical Review B. — 2020. — Vol. 101. — Iss. 10. — 100406.|
|Abstract:||We report on the study of the noncentrosymmetric ternary carbide YbCoC2. Our magnetization, specific heat, resistivity, and neutron diffraction measurements consistently show that the system behaves as a heavy-fermion compound, displaying an amplitude-modulated magnetic structure below the Néel temperature reaching TN=33 K under pressure. Such a large value, being the highest among the Yb-based systems, is explained in the light of our ab initio calculations, which show that the 4f electronic states of Yb have a dual nature, i.e., due to their strong hybridization with the 3d states of Co, 4f states expose both localized and itinerant properties. © 2020 American Physical Society.|
4F ELECTRONIC STATE
AB INITIO CALCULATIONS
HEAVY FERMION COMPOUNDS
NEUTRON DIFFRACTION MEASUREMENTS
|metadata.dc.description.sponsorship:||This work was supported by Russian Science Foundation: D.A.S., V.A.S., A.E.P., and A.V.T. acknowledge the support of their experimental work (RSF Grant No. 17-12-01050); N.M.C. and M.V.M. are grateful for support of their theoretical calculations (RSF Grant No. 18-12-00438). The results of calculations were obtained using the computational resources of MCC NRC “Kurchatov Institute” and supercomputers at Joint Supercomputer Center of RAS (JSCC RAS). We also thank the Uran supercomputer of IMM UB RAS for access.|
|RSCF project card:||17-12-01050|
|Appears in Collections:||Научные публикации, проиндексированные в SCOPUS и WoS CC|
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