Photoemission study of some novel materials: Rare earth/transition metal interface, Ba*0.6*K*0.4*BiO3* and AlPdM

摘要

Synchrotron radiation photoemission spectroscopy and low energy electron diffraction (LEED) are applied to explore several novel materials: (a) Ce epitaxial growth on W (110) surfaces. (b) Eu epitaxial growth on Ta (110) surfaces. (c) Sm epitaxial growth on Ta (110) surfaces. (d) quasicrystalline AlPdMn, and (e) superconducting Ba(sub 1-x)K(sub x)BiO(sub 3). In the case of rare earth overlayers on transition metal surface, resonance photoemission spectroscopy is used to enhance the 4f features. The metal surface phase transition is investigated on an atomic-scale. In the case of quasicrystalline AlPdMn and superconducting Ba(sub 1-x)K(sub x)BiO(sub 3) the electronic structures are investigated by angle-resolved photoemission.