S. E. Schnatterly

Momentum-dependent charge transfer excitations in Sr2CuO2Cl2 angle-resolved electron energy loss spectroscopy

Electron-hole pair excitations in the insulating cuprates

Interband transitions, plasmons, and dispersion in hexagonal boron nitride

Sr_2CuO_2Cl_2

Valence-band electronic structure of silicon nitride studied with the use of soft-x-ray emission.

were investigated by angle-resolved electron energy loss spectroscopy. The optically allowed and optically forbidden transitions were observed to be strongly anisotropic in

Observation of Surface Plasmons and Measurement of the Optical Constants for Sodium and Potassium

Cu-O_2

Anisotropy of BN and Be x-ray-emission bands

plane. The former show a large energy dispersion

Inelastic electron scattering in amorphous silicon nitride and aluminum oxide with multiple-scattering corrections.

\sim 1.5

Anisotropy of the high-energy satellites of the K emission band in graphite.

eV along [110], and the latter appear at a higher energy position (

LOCAL-FIELD EFFECTS AND FORBIDDEN TRANSITIONS IN C60 SOLID THIN FILMS

\sim 4.5

Shakeup in soft-x-ray emission. I. The low-energy tail

eV) only along [100], but not along [110]. We interpret these results as transitions involving excitons. A small exciton model is examined to explain both the observed features.