#### Filter Results:

- Full text PDF available (10)

#### Publication Year

1998

2017

- This year (2)
- Last 5 years (7)
- Last 10 years (11)

#### Publication Type

#### Co-author

#### Journals and Conferences

#### Key Phrases

Learn More

- Arno Schindlmayr
- 1998

We present a simple analytic scheme for calculating the binding energy of excitons in semiconductors that takes full account of the existing anisotropy in the effective mass, as a complement to the qualitative treatment in most textbooks. Results obtained for excitons in gallium nitride form the basis for a discussion of the accuracy of this approach.… (More)

c 2006 by John von Neumann Institute for Computing Permission to make digital or hard copies of portions of this work for personal or classroom use is granted provided that the copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. To copy otherwise requires prior… (More)

We present an implementation of the GW approximation for the electronic self-energy within the fullpotential linearized augmented-plane-wave FLAPW method. The algorithm uses an all-electron mixed product basis for the representation of response matrices and related quantities. This basis is derived from the FLAPW basis and is exact for wave-function… (More)

- Michael Friedrich, A. Riefer, S. Sanna, Wolf Gero Schmidt, Arno Schindlmayr
- Journal of physics. Condensed matter : an…
- 2015

The vibrational properties of stoichiometric LiNbO3 are analyzed within density-functional perturbation theory in order to obtain the complete phonon dispersion of the material. The phonon density of states of the ferroelectric (paraelectric) phase shows two (one) distinct band gaps separating the high-frequency (∼800 cm(-1)) optical branches from the… (More)

- Christoph Friedrich, Arno Schindlmayr, Stefan Blügel
- Computer Physics Communications
- 2009

- Christoph Freysoldt, Philipp Eggert, Patrick Rinke, Arno Schindlmayr, R. W. Godby, Matthias Scheffler
- Computer Physics Communications
- 2007

Excited-state calculations, notably for quasiparticle band structures, are nowadays routinely performed within the GW approximation for the electronic self-energy. Nevertheless, certain numerical approximations and simplifications are still employed in practice to make the computations feasible. An important aspect for periodic systems is the proper… (More)

- A. Riefer, Nils Weber, +5 authors Wolf Gero Schmidt
- Journal of physics. Condensed matter : an…
- 2017

The electronic band structures of hexagonal ZnO and cubic ZnS, ZnSe, and ZnTe compounds are determined within hybrid-density-functional theory and quasiparticle calculations. It is found that the band-edge energies calculated on the [Formula: see text] (Zn chalcogenides) or GW (ZnO) level of theory agree well with experiment, while fully self-consistent… (More)

- Mathias Wand, Arno Schindlmayr, Torsten Meier, Jens Forstner
- CLEO: 2011 - Laser Science to Photonic…
- 2011

We present an ab-initio method for calculating nonlinear and nonlocal optical effects in metallic slabs with sub-wavelength thickness. We find a strong localization of the second-harmonic current at the metal-vacuum interface.

- Joachim A. Paier, Xinguo Ren, +8 authors andMatthias Scheffler
- 2017

We start from the Bethe–Goldstone equation (BGE) to derive a simple orbital-dependent correlation functional—BGE2—which terminates the BGE expansion at the second-order, but retains the selfconsistent coupling of electron-pair correlations.We demonstrate that BGE2 is size consistent and one-electron ‘self-correlation’ free. The electron-pair correlation… (More)

- Arno Schindlmayr
- 2002

The good performance of the GW approximation for band-structure calculations in solids was long taken as a sign that the sum of self-energy diagrams is converged and that all omitted terms are small. However, with modern computational resources it has now become possible to evaluate self-consistency and vertex corrections explicitly, and the numerical… (More)