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Journal Articles

Probing strongly correlated 4$$f$$-orbital symmetry of the ground state in Yb compounds by linear dichroism in core-level photoemission

Mori, Takeo*; Kitayama, Satoshi*; Kanai, Yuina*; Naimen, Sho*; Fujiwara, Hidenori*; Higashiya, Atsushi*; Tamasaku, Kenji*; Tanaka, Arata*; Terashima, Kensei*; Imada, Shin*; et al.

Journal of the Physical Society of Japan, 83(12), p.123702_1 - 123702_5, 2014/12

 Times Cited Count:15 Percentile:71.43(Physics, Multidisciplinary)

We show that the strongly correlated 4$$f$$-orbital symmetry of the ground state is revealed by linear dichroism in core-level photoemission spectra, as we have discovered for YbRh$$_{2}$$Si$$_{2}$$ and YbCu$$_{2}$$Si$$_{2}$$. Theoretical analysis shows us that the linear dichroism reflects the anisotropic charge distributions resulting from a crystalline electric field. We have successfully determined the ground-state 4$$f$$ symmetry for both compounds from the polarization-dependent angle resolved core-level spectra at a temperature well below the first excitation energy. The excited-state symmetry is also probed by temperature dependence of the linear dichroism where the high measurement temperatures are on the order of the crystal-field-splitting energies.

Oral presentation

Dynamic and static structure factor for Staphylococcal Nuclease measured by neutron scattering

Endo, Hitoshi; Tominaga, Taiki; Takata, Shinichi; Matsumoto, Atsushi; Iwase, Hiroki*; Kamikubo, Hironari*; Kataoka, Mikio

no journal, , 

The dynamic and static structure factors for Staphylococcal Nuclease (SNase), which is a nucleolytic enzyme derived from Staphylococcus aureus, were evaluated by neutron spin echo (NSE)and small-angle neutron scattering (SANS) experiments. The SANS experiment was performed with TAIKAN (BL15) time-of-flight diffractometer at J-PARC/MLF, and we could obtain the static structure factors with wide Q range (0.2 $$<$$ Q[1/$AA] $<$$ 2). The NSE measurement was performed with IN15 spectrometer at ILL. Grenoble, which enabled us to obtain intermediate scattering functions over 200 nanoseconds. The effects of hydration and internal motions were considered.

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