An accurate width is determined for the valence band of diamond by imaging photoelectron momentum distributions for a variety of initial- and final-state energies.

We have performed soft X-ray angle-resolved photoemission spectroscopy (SXARPES) of microwave plasma-assisted chemical vapor deposition diamond films with different B concentrations in order to...

Jan 1, 1997 · Jimenez, I. , Terminello, L. , Sutherland, D. , Carlisle, J. , Shirley, E. and Himpsel, F. (1997), Accurate valence band width of diamond, Physical Review B ...

A variable surface dipole on the atomic scale, possibly due to the adsorption--desorption of a background gas, is reported. A study of the relative cross section of the upper (p-like) versus the lower (s-like) portion of the diamond valence band indicates comparable cross sections at a photon energy h..omega..=160 eV.

Jun 17, 2019 · The diamond and zinc-blende semiconductors are well-known and have been widely studied for decades. Yet, their electronic structure still surprises with unexpected topological properties of the valence bands.

In this paper we show that a tight-binding method using a few interaction parameters gives accurate results for the valence bands of the diamond and zincblende crystals C, Si, Ge, GaAs, and ZnSe. The tight-binding method we use is equivalent to that of Slater and Koster [GI. It can also be regarded as.

Apr 1, 1997 · The U.S. Department of Energy's Office of Scientific and Technical Information

Feb 19, 2013 · Valence-band dispersions of hydrogen-terminated diamond along the Γ-Δ-direction from normal emission spectra. Red squares represent the band dispersion and circles represent the dispersionless band features, both experimentally obtained.

Run pw2wannier90 to compute the overlap between Bloch states and the projections for the starting guess (written in the diamond.mmn and diamond.amn files).

Jan 1, 2022 · According to the classical covalent-bond (CVB) model, the two s and two p valence electrons in C, Si, and Ge crystals with diamond structure adopt an equivalent sp 3 structure and form four covalent bonds between an atom and its four adjacent atoms. Therefore, the four valence electrons (sp 3) per atom should have the same energy state. However ...