Photoemission Spectroscopy on the System of Noncentrosymmetric Lithium Ternary Borides
POSTER
Abstract
We performed x-ray photoemission spectroscopy at BL27SU of SPring-8 on polycrystalline samples of Li$_{2}$Pd$_{1.5}$Pt$_{1.5}$B and Li$_{2}$Pt$_{3}$B prepared by the arc melting method. We also employed a polycrystalline platinum plate commercially available for comparison. We also performed the calculation of valence band structure of Li$_{2}$Pt$_{3}$B using full-potential augmented plane wave method with local density approximation. Our experimental data on the samples and the previous photoemission study on Li$_{2}$Pd$_{3}$B support that electron correlations do not play an important role in them.
*The x-ray photoemission experiments were performed at SPring-8 under the proposal number of 2007B1519. One of the authors (R. Y.) thanks Grant-in-Aid for Attractive Education in Grant-in-Aid for Attractive Education in Graduate School.