Naslov
Site-selective 11B NMR studies on YbAlB4

Autori
Takano, Shun ; Grbić, Mihael Srđan ; Kimura, Kimura ; Yoshida, Makoto ; Takigawa, Masashi ; O'Farrell, Eoin C. T. ; Kuga, Kentaro ; Nakatsuji, Satoru ; Harima, Hisatomo

Izvornik
Journal of physics : Conference series (1742-6588) 683 (2016); 012008-1

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
NMR; heavy fermion; site symmetry

Sažetak
β-YbAlB4 is a distinctive heavy fermion superconductor that exhibits unconventional quantum criticality without tuning in a strongly intermediate valence state. In this paper, we report the result of 11B NMR measurements on the single crystals of, β-YbAlB4 and α- YbAlB4, the locally isostructural polymorph of β-YbAlB4. All 11B NMR lines for both samples were successfully assigned to inequivalent crystallographic sites by comparing the experimental results and the ab-initio calculation of the electric field gradient. In both compounds, the anisotropy of the Knight shift exhibits a characteristic radial pattern, indicating approximate axial symmetry of the hybridization between the Yb-4f electrons and the conduction electrons.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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