40 citations · 167 across the 6 of their papers we have counts for
7 papers
Woptic: optical conductivity with Wannier functions and adaptive k-mesh refinement
E. Assmann, P. Wissgott, J. Kuneš +3
We present an algorithm for the adaptive tetrahedral integration over the Brillouin zone of crystalline materials, and apply it to compute the optical conductivity, dc conductivity…
Anisotropic optical conductivity of the putative Kondo insulator CeRuSn
V. Guritanu, P. Wissgott, T. Weig +11
Kondo insulators and in particular their non-cubic representatives have remained poorly understood. Here we report on the development of an anisotropic energy pseudogap in the tetr…
Microscopic understanding of the orbital splitting and its tuning at oxide interfaces
Zhicheng Zhong, Philipp Wissgott, Karsten Held +1
By means of a Wannier projection within the framework of density functional theory, we are able to identify the modified c-axis hopping and the energy mismatch between the cation b…
Dipole matrix element approach vs. Peierls approximation for optical conductivity
P. Wissgott, J. Kuneš, A. Toschi +1
We develop a computational approach for calculating the optical conductivity in the augmented plane wave basis set of Wien2K and apply it for thoroughly comparing the full dipole m…
Effects of electronic correlations and disorder on the thermopower of NaxCoO2
Philipp Wissgott, Alessandro Toschi, Giorgio Sangiovanni +1
For the thermoelectric properties of NaxCoO2, we analyze the effect of local Coulomb interaction and (disordered) potential differences for Co-sites with adjacent Na-ion or vacancy…
Enhancement of the NaCoO thermopower due to electronic correlations
P. Wissgott, A. Toschi, H. Usui +2
Using the merger of local density approximation and dynamical mean field theory, we show how electronic correlations increase the thermopower of NaCoO by 200%. The newl…