6533b871fe1ef96bd12d237b

RESEARCH PRODUCT

Photon Energy Dependent Hard X-ray Photoemission Spectroscopy of YbCu2Si2

Go KuwaharaShin ImadaAndrei GloskovskyMakina YabashiAtsushi HigashiyaTakao EbiharaKenji TamasakuAkira SekiyamaMihaela GorgoiFranz SchaefersMasato KimuraYoshichika OnukiS. KitayamaClaudia FelserJ. YamaguchiShigemasa SugaG. FunabashiHidenori FujiwaraTetsuya Ishikawa

subject

X ray photoemissionValence (chemistry)Materials sciencePhotoemission spectroscopyHeavy fermionGeneral Physics and AstronomyAtomic physicsPhoton energySpectroscopySpectral line

description

We have performed photon energy ( h ν) dependent hard X-ray photoemission spectroscopy (HAXPES) for YbCu 2 Si 2 , which is a heavy Fermion compound with intermediate Yb valence. We identified that the bulk components in the Si 1 s and Yb 3 d spectra develop with increasing h ν from 2.5 to 6 keV. Moreover, the temperature dependence of the Yb 3 d spectra measured at h ν= 8 keV has shown a valence fluctuation behavior. These results suggest that high h ν HAXPES is essential to determine the mean valence of the Yb compounds.

yearjournalcountryeditionlanguage
2012-01-01Journal of the Physical Society of Japan
https://doi.org/10.1143/jpsjs.81sb.sb055