- Tytuł:
- Localized f electron aspect in heavy-germion intermetallic YbRh₂Si₂
- Autorzy:
-
Radwanski, R.
Nalecz, D.
Fedyk, S.
Ropka, Z. - Powiązania:
- https://bibliotekanauki.pl/articles/1048149.pdf
- Data publikacji:
- 2018-03
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
Heavy fermion
crystal field
Kondo resonance
YbRh₂Si₂ - Opis:
- We point out that there is more and more experiments showing the almost perfect localization of thirteen f-electrons in the canonical heavy-fermion system: YbRh₂Si₂. The revealing of the Yb³⁺ crystal-field (CEF) states confirms the Quantum Atomistic Solid State Theory. QUASST was the only theory, which has claimed from 1992 the existence of the discrete CEF electronic structure and the Kramers doublet ground state in heavy-fermion intermetallics. The removal of the on-site Kramers degeneracy via spin-dependent interactions is origin of the large specific heat at low temperatures (a hallmark of the heavy-fermion phenomena) and of low-energy neutral spin-like excitations. The Kondo resonance is related to the slight splitting of the Kramers doublet ground state of the Yb³⁺ ion.
- Źródło:
-
Acta Physica Polonica A; 2018, 133, 3; 387-390
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł