ATOMISTIC MODELING OF DIFFUSION IN ALUMINUM (2007)
S. Grabowski, K. Kadau, P. Entel
We present molecular-dynamics simulations of self-di#usion in Al. In order to facilitate the description of elastic and vibrational properties as well as vacancy migration, an embedded-atom method...
ELEMENTARY DIFFUSION PROCESSES IN AL-CU-ZN ALLOYS: AN AB INITIO STUDY (2007)
The vacancy formation and migration energy of Al as well as the migration energies of Cu and Zn impurities were calculated at T = 0 K using the Local-Density Approximation based on ultrasoft...
The structure of zinc and copper oxide species hosted in porous siliceous matrices (2003)
Tkachenko, O. P., Klementiev, K. V., Löffler, E., Ritzkopf, I., Schüth, F., Bandyopadhyay, M., ...
Perturbation expansion for 2-D Hubbard model (2000)
Zlatic, V., Horvatic, B., Dolicki, B., Grabowski, S., Entel, P.
We develop an efficient method to calculate the third-order corrections to the self-energy of the hole-doped two-dimensional Hubbard model in space-time representation. Using the Dyson equation we...
Effects of Electronic Correlations on the Thermoelectric Power of the Cuprates (1997)
Hildebrand, G., Hagenaars, T. J., Hanke, W., Grabowski, S., Schmalian, J.
We show that important anomalous features of the normal-state thermoelectric power S of high-Tc materials can be understood as being caused by doping dependent short-range antiferromagnetic...
Überbetrieblicher QS-Wissenstransfer (1997)
Berger, K., Grabowski, S., Kamiske, G.F., Schnauber, H., Specht, D.
Fördernde und hemmende Faktoren des QS-Wissenstransfers (1997)
Bäuerle, T., Berger, K., Dörre, P., Grabowski, S., Hauer, R., ...
Grabowski, S., Schmalian, J., Bennemann, K. H.
The normal and superconducting state of YBa_{2}Cu_{3}O_{6+\delta} and Bi_{2}Sr_{2}CaCu_{2}O_{8+\delta} are investigated by using the mono- and bilayer Hubbard model within the fluctuation exchange...
Schmalian, J., Langer, M., Grabowski, S., Bennemann, K. H.
Using the fluctuation exchange approximation of the one band Hubbard model, we discuss the origin of the changing Fermi surface volume in underdoped cuprate systems due to the transfer of occupied...
Electronic Theory for Bilayer-Effects in High-T_c Superconductors (1996)
Grabowski, S., Schmalian, J., Langer, M., Bennemann, K. H.
The normal and the superconducting state of two coupled CuO_2 layers in the High-T_c superconductors are investigated by using the bilayer Hubbard model, the FLEX approximation on the real frequency...
Langer, M., Schmalian, J., Grabowski, S., Bennemann, K. H.
We analyze the doping dependence of the intensity and energetical position of shadow states in high -T$_{c}$ superconductors within the 2D Hubbard model and using our recently developed numerical...
Grabowski, S., Langer, M., Schmalian, J., Bennemann, K. H.
The superconducting phase of the 2D one-band Hubbard model is studied within the FLEX approximation and by using an Eliashberg theory. We investigate the doping dependence of $T_c$, of the gap...
Langer, M., Schmalian, J., Grabowski, S., Bennemann, K. H.
We analyze the breakdown of Fermi-liquid behavior within the 2D Hubbard model as function of doping using our recently developed numerical method for the self consistent summation of bubble and...
Grabowski, S., Schmalian, J., Langer, M., Bennemann, K. H.
The doping dependence of the superconducting state for the 2D one-band Hubbard Hamiltonian is determined. By using an Eliashberg-type theory, we find that the gap function $\Delta_{\bf k}$ has a...
Langer, M., Schmalian, J., Grabowski, S., Bennemann, K. H.
Using a new method for the solution of the FLEX-equations, which allows the determination of the self energy $\Sigma_{\bf k}(\omega)$ of the $2D$ Hubbard model on the real frequency axis, we...
Grabowski, S., Garcia, Martin E., Bennemann, K. H.
We present a theory which permits for the first time a detailed analysis of the dependence of the absorption spectrum on atomic structure and cluster size. Thus, we determine the development of the...
Grabowski, S., Garcia, Martin E., Bennemann, K. H.
We present a theory which permits for the first time a detailed analysis of the dependence of the absorption spectrum on atomic structure and cluster size. Thus, we determine the development of the...