Concomitant singularities of Yb-valence and magnetism at a critical lattice parameter of icosahedral quasicrystals and approximants
| العنوان: | Concomitant singularities of Yb-valence and magnetism at a critical lattice parameter of icosahedral quasicrystals and approximants |
|---|---|
| المؤلفون: | Shinjirou Yokota, Keisuke Namba, Noriaki K. Sato, Keiichiro Imura, Hitoshi Yamaoka, Takuma Kawai, Kazuhiko Deguchi, Nozomu Hiraoka, Shinnosuke Hirokawa, Jun'ichiro Mizuki, Yoshiya Yamamoto, Kazushi Sakamoto, Tsutomu Ishimasa, Hirofumi Ishii |
| المصدر: | Scientific Reports, Vol 10, Iss 1, Pp 1-10 (2020) Scientific Reports |
| بيانات النشر: | Nature Publishing Group, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Physics, Phase transition, Electronic properties and materials, Multidisciplinary, Valence (chemistry), Condensed matter physics, Magnetism, Icosahedral symmetry, lcsh:R, Quasicrystal, lcsh:Medicine, 02 engineering and technology, 021001 nanoscience & nanotechnology, 01 natural sciences, Article, Lattice constant, 0103 physical sciences, Condensed Matter::Strongly Correlated Electrons, lcsh:Q, Condensed-matter physics, 010306 general physics, 0210 nano-technology, Translational symmetry, lcsh:Science, Absolute zero |
| الوصف: | Non-Fermi-liquid (NFL), a significant deviation from Fermi-liquid theory, usually emerges near an order-disorder phase transition at absolute zero. Recently, a diverging susceptibility toward zero temperature was observed in a quasicrystal (QC). Since an electronic long-range ordering is normally absent in QCs, this anomalous behaviour should be a new type of NFL. Here we study high-resolution partial-fluorescence-yield x-ray absorption spectroscopy on Yb-based intermediate-valence icosahedral QCs and cubic approximant crystals (ACs), some of which are new materials, to unveil the mechanism of the NFL. We find that for both forms of QCs and ACs, there is a critical lattice parameter where Yb-valence and magnetism concomitantly exhibit singularities, suggesting a critical-valence-fluctuation-induced NFL. The present result provides an intriguing structure–property relationship of matter; size of a Tsai-type cluster (that is a common local structure to both forms) tunes the NFL whereas translational symmetry (that is present in ACs but absent in QCs) determines the nature of the NFL against the external/chemical pressure. |
| اللغة: | English |
| تدمد: | 2045-2322 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::419d28fee5ce87887c17f7162fef0c37 http://link.springer.com/article/10.1038/s41598-020-74124-7 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....419d28fee5ce87887c17f7162fef0c37 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 20452322 |
|---|