Evidence for Gamma_8 Ground-State Symmetry of Cubic YbB12 Probed by Linear Dichroism in Core-Level Photoemission
| Autor: | Kanai, Yuina, Mori, Takeo, Naimen, Sho, Yamagami, Kohei, Fujiwara, Hidenori, Higashiya, Atsushi, Kadono, Toshiharu, Imada, Shin, Kiss, Takayuki, Tanaka, Arata, Tamasaku, Kenji, Yabashi, Makina, Ishikawa, Tetsuya, Iga, Fumitoshi, Sekiyama, Akira |
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| Rok vydání: | 2015 |
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| Zdroj: | J. Phys. Soc. Jpn. 84, 073705 (2015) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.7566/JPSJ.84.073705 |
| Popis: | We have successfully observed linear dichroism in angle-resolved Yb3+ 3d5/2 core-level photoemission spectra for YbB12 in cubic symmetry. Its anisotropic 4f charge distribution due to the crystal-field splitting is responsible for the linear dichroism, which has been verified by spectral simulations using ionic calculations with the full multiplet theory for a single-site Yb3+ ion in cubic symmetry. The observed linear dichroism as well as the polarization-dependent spectra in two different photoelectron directions for YbB12 are quantitatively reproduced by theoretical analysis for the Gamma_8 ground state, indicating the Gamma_8 ground-state symmetry for the Yb3+ ions mixed with the Yb2+ state. Comment: 5 pages, 3 figures, to be published in J. Phys. Soc. Jpn. (Letters) |
| Databáze: | arXiv |
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