Effect of Anisotropic Hybridization in YbAlB\(_4\) Probed by Linear Dichroism in Core-Level Hard X-ray Photoemission Spectroscopy

Effect of Anisotropic Hybridization in YbAlB\(_4\) Probed by Linear Dichroism in Core-Level Hard X-ray Photoemission Spectroscopy

We have probed the crystalline electric-field ground states of pure \(|J = 7/2, J_z = \pm 5/2\rangle\) as well as the anisotropic \(c\)-\(f\) hybridization in both valence fluctuating systems \(\alpha\)- and \(\beta\)-YbAlB\(_4\) by linear polarization dependence of angle-resolved core level photoem...

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Veröffentlicht in:arXiv.org 2018-11
Hauptverfasser: Kuga, Kentaro, Kanai, Yuina, Fujiwara, Hidenori, Yamagami, Kohei, Hamamoto, Satoru, Aoyama, Yuichi, Sekiyama, Akira, Higashiya, Atsushi, Kadono, Toshiharu, Imada, Shin, Yamasaki, Atsushi, Tanaka, Arata, Tamasaku, Kenji, Yabashi, Makina, Ishikawa, Tetsuya, Nakatsuji, Satoru, Kiss, Takayuki
Format: Artikel
Sprache:eng
Schlagworte:
Anisotropy
Dependence
Dichroism
Electric fields
Fermi liquids
Hybridization
Linear polarization
Photoelectric emission
Photoelectron spectroscopy
Spectrum analysis
Variations
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Zusammenfassung:We have probed the crystalline electric-field ground states of pure \(|J = 7/2, J_z = \pm 5/2\rangle\) as well as the anisotropic \(c\)-\(f\) hybridization in both valence fluctuating systems \(\alpha\)- and \(\beta\)-YbAlB\(_4\) by linear polarization dependence of angle-resolved core level photoemission spectroscopy. Interestingly, the small but distinct difference between \abyb was found in the polar angle dependence of linear dichroism, indicating the difference in the anisotropy of \(c\)-\(f\) hybridization which may be essential to a heavy Fermi liquid state in \(\alpha\)-YbAlB\(_4\) and a quantum critical state in \(\beta\)-YbAlB\(_4\).
ISSN:2331-8422
DOI:10.48550/arxiv.1811.07537