199 citations · 337 across the 8 of their papers we have counts for
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Effect of Local Electron-Electron Correlation in Hydrogen-like Impurities in Ge
H. Sims, E. R. Ylvisaker, E. Şaşıoğlu +3
We have studied the electronic and local magnetic structure of the hydrogen interstitial impurity at the tetrahedral site in diamond-structure Ge, using an empirical tight binding…
Orbital order, stacking defects and spin-fluctuations in the -electron molecular solid RbO
E. R. Ylvisaker, R. R. P. Singh, W. E. Pickett
We examine magnon and orbiton behavior in localized O anti-bonding molecular orbitals using an effective Kugel-Khomskii Hamiltonian derived from a two band Hubbard model…
Anisotropy and Magnetism in the LSDA+U Method
Erik R. Ylvisaker, Warren E. Pickett, Klaus Koepernik
Consequences of anisotropy (variation of orbital occupation) and magnetism, and their coupling, are analyzed for LSDA+U functionals, both the commonly used ones as well as less com…