102 citations · 378 across the 15 of their papers we have counts for
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cond-mat.str-el2008★ 1 cited
Random dispersion approximation for the Hubbard model
S. Ejima, F. Gebhard, R. M. Noack
We use the Random Dispersion Approximation (RDA) to study the Mott-Hubbard transition in the Hubbard model at half band filling. The RDA becomes exact for the Hubbard model in infi…
cond-mat.str-el2008★ 10 cited
Phase diagram of the t-U-J1-J2 chain at half filling
X. Huang, E. Szirmai, F. Gebhard +2
We investigate the half-filled Hubbard chain with additional nearest- and next-nearest-neighbor spin exchange, J1 and J2, using bosonization and the density-matrix renormalization…
cond-mat.str-el2008★ 28 cited
Spin-orbit coupling in ferromagnetic Nickel
J. Bünemann, F. Gebhard, T. Ohm +2
We use the Gutzwiller variational theory to investigate the electronic and the magnetic properties of fcc-Nickel. Our particular focus is on the effects of the spin-orbit coupling.…