594 citations · 720 across the 6 of their papers we have counts for
6 papers
Random-phase approximation and its applications in computational chemistry and materials science
Xinguo Ren, Patrick Rinke, Christian Joas +1
The random-phase approximation (RPA) as an approach for computing the electronic correlation energy is reviewed. After a brief account of its basic concept and historical developme…
Geometric characterization of nodal domains: the area-to-perimeter ratio
Yehonatan Elon, Sven Gnutzmann, Christian Joas +1
In an attempt to characterize the distribution of forms and shapes of nodal domains in wave functions, we define a geometric parameter - the ratio between the area of a domain…
Microwave photoconductivity of a two-dimensional electron gas due to intra-Landau-level transitions
Christian Joas, Juergen Dietel, Felix von Oppen
Motivated by a recent experiment, we study the microwave-induced photoconductivity of a two-dimensional electron gas arising from intra-Landau-level transitions within a model wher…
Parametric resonance of a two-dimensional electron gas under bichromatic irradiation
C. Joas, M. E. Raikh, F. von Oppen
In an ultrahigh mobility 2D electron gas, even a weak nonparabolicity of the electron dispersion, by violating Kohn's theorem, can have a drastic effect on dc magnetotransport unde…
Theory for phonon-induced superconductivity in MgB
C. Joas, I. Eremin, D. Manske +1
We analyze superonductivity in MgB observed below K resulting from electron-phonon coupling involving a mode at meV and most importantly the in-plane…
Electronic theory for superconductivity in SrRuO: triplet pairing due to spin-fluctuation exchange
I. Eremin, D. Manske, C. Joas +1
Using a two-dimensional Hubbard Hamiltonian for the three electronic bands crossing the Fermi level in SrRuO we calculate the band structure and spin susceptibility $χ({\bf…