159 citations · 1.4k across the 50 of their papers we have counts for
9 papers · 1 filter
Stripe phases - possible ground state of the high-Tc superconductors
Marcin Raczkowski, Andrzej M. Oles, Raymond Fresard
Based on the mean-field method applied either to the extended single-band Hubbard model or to the single-band Peierls-Hubbard Hamiltonian we study the stability of both site-center…
Unconventional Hall effect in oriented CaCoO thin films
H. W Eng, P. Limelette, W. Prellier +2
Transport properties of the good thermoelectric misfit oxide CaCoO are examined. In-plane resistivity and Hall resistance measurements were made on epitaxial thin films…
Half-filled stripes in the t-t'-U Hubbard model
M. Raczkowski, A. M. Oles, R. Fresard
Using a self-consistent Hartree-Fock approximation we investigate the relative stability of various stripe phases in the extended -- Hubbard model. One finds that a negat…
Magnetic ordering in trigonal chain compounds
V. Eyert, U. Schwingenschloegl, C. Hackenberger +3
We present electronic structure calculations for the one-dimensional magnetic chain compounds Ca_3CoRhO_6 and Ca_3FeRhO_6. The calculations are based on density functional theory a…
Non-linear effects and Joule heating in I-V curves in manganites
Silvana Mercone, Raymond Fresard, Vincent Caignaert +6
We study the influence of the Joule effect on the non-linear behavior of the transport I-V curves in polycrystalline samples of the manganite Pr0.8Ca0.2MnO3 by using the crystallin…
Strongly correlated properties of the thermoelectric cobalt oxide Ca3Co4O9
P. Limelette, V. Hardy, P. Auban-Senzier +7
We have performed both in-plane resistivity, Hall effect and specific heat measurements on the thermoelectric cobalt oxide CaCoO. Four distinct transport regimes…
Mean-field phase diagram of interacting e_g electrons
M. Raczkowski, A. M. Oles, R. Fresard
We investigate the magnetic phase diagram of the two-dimensional model for e_g electrons which describes layered nickelates. One finds a generic tendency towards magnetic order acc…
Interplay of orbitally polarized and magnetically ordered phases in doped transition metal oxides
R. Fresard, M. Raczkowski, A. M. Oles
We investigate the magnetic instabilities of the two-dimensional model of interacting e_g electrons for hole doping away from two electrons per site in the mean-field approximation…
Melting of the stripe phases in the t-t'-U Hubbard model
M. Raczkowski, R. Fresard, A. M. Oles
We investigate melting of stripe phases in the overdoped regime x>0.3 of the two-dimensional t-t'-U Hubbard model, using a spin rotation invariant form of the slave boson represent…