51 citations · 76 across the 8 of their papers we have counts for
6 papers · 1 filter
Spin-Split Conduction band in \eb\ and Tuning of Half-Metallicity with External Stimuli
Jungho Kim, Wei Ku, Chi-Cheng Lee +5
We report Eu L3-edge resonant inelastic x-ray scattering (RIXS) investigation of the electronic structure of EuB6. We observe that the RIXS spectral weight around 1.1 eV increases…
Flavor-twisted boundary condition for simulations of quantum many-body systems
Wei-Guo Yin, Wei Ku
We present an approximative simulation method for quantum many-body systems based on coarse graining the space of the momentum transferred between interacting particles, which lead…
Orbital ordering in LaMnO: Electron-electron versus electron-lattice interactions
Wei-Guo Yin, Dmitri Volja, Wei Ku
The relative importance of electron-lattice (e-l) and electron-electron (e-e) interactions in ordering orbitals in LaMnO is systematically examined within the LDA+ approxima…
Coexistence of gapless excitations and commensurate charge-density wave in the 2H-transition metal dichalcogenides
Ryan Barnett, Anatoli Polkovnikov, Eugene Demler +2
An unexpected feature common to 2H-transition metal dichalcogenides (2H-TMDs) is revealed with first-principles Wannier functions analysis of the electronic structure of the protot…
Temperature dependent d-d excitations in manganites probed by resonant inelastic x-ray scattering
S. Grenier, J. P. Hill, V. Kiryukhin +8
We report the observation of temperature dependent electronic excitations in various manganites utilizing resonant inelastic x-ray scattering (RIXS) at the Mn K-edge. Excitations w…
Exchange coupling in Eu monochalcogenides from first principles
J. Kunes, Wei Ku, W. E. Pickett
Using a density functional method with explicit account for strong Coulomb repulsion within the 4f shell, we calculate effective exchange parameters and the corresponding ordering…