2 papers
cond-mat.str-el2001
Phase diagram and optical conductivity of the ionic Hubbard model
P. Brune, G. I. Japaridze, A. P. Kampf +1
We investigate the ground state phase diagram of the one-dimensional ionic Hubbard model with an alternating potential at half-filling by the bosonization technique as well as by n…
cond-mat.supr-con2000
Anisotropic conductivity in superconducting NCCO
U. Michelucci, A. P. Kampf, A. Pimenov
The low temperature behaviour of the in-plane and c-axis conductivity of electron-doped cuprates like NCCO is examined; it is shown to be consistent with an isotropic quasiparticle…