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arXiv · 1705.04295

Linear dichroism in angle-resolved core-level photoemission spectra reflecting 4f ground-state symmetry of strongly correlated cubic Pr compounds

Satoru Hamamoto·Shuhei Fujioka·Yuina Kanai·Kohei Yamagami·Yasuhiro Nakatani·Koya Nakagawa·Hidenori Fujiwara·Takayuki Kiss·Atsushi Higashiya·Atsushi Yamasaki·Toshiharu Kadono·Shin Imada·Arata Tanaka·Kenji Tamasaku·Makina Yabashi·Tetsuya Ishikawa·Keisuke T. Matsumoto·Takahiro Onimaru·Toshiro Takabatake·Akira Sekiyama
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Abstract

We report experimentally observed linear dichroism in angle-resolved core-level photoemission spectra of PrIr2Zn20 and PrB6 in cubic symmetry. The different anisotropic 4f charge distributions between the compounds due to the crystalline-electric-field splitting are responsible for the difference in the linear dichroism, which has been verified by spectral simulations with the full multiplet theory for a single-site Pr3+ ion in cubic symmetry. The observed linear dichroism and polarization-dependent spectra in two different photoelectron directions for PrIr2Zn20 are reproduced by theoretical analysis for the Gamma_3 ground state, whereas those of the Pr 3d and 4d core levels indicate the Gamma_5 ground state for PrB6.

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Satoru Hamamoto, Shuhei Fujioka, Yuina Kanai, Kohei Yamagami, Yasuhiro Nakatani, Koya Nakagawa, Hidenori Fujiwara, Takayuki Kiss, Atsushi Higashiya, Atsushi Yamasaki, Toshiharu Kadono, Shin Imada, Arata Tanaka, Kenji Tamasaku, Makina Yabashi, Tetsuya Ishikawa, Keisuke T. Matsumoto, Takahiro Onimaru, Toshiro Takabatake, Akira Sekiyama. 2017-05-11. Linear dichroism in angle-resolved core-level photoemission spectra reflecting 4f ground-state symmetry of strongly correlated cubic Pr compounds. https://doi.org/10.7566/jpsj.86.123703

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