M. Matlak

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cond-mat.str-el2007

Electronic Correlations within Fermionic Lattice Models

M. Matlak, B. Grabiec, S. Krawiec

We investigate two-site electronic correlations within generalized Hubbard model, which incorporates the conventional Hubbard model (parameters: $t$ (hopping between nearest neighb…

cond-mat.str-el2005

Magnetism and superconductivity within extended Hubbard model for a dimer. Exact results

B. Grabiec, S. Krawiec, M. Matlak

We find the eigenvalues $E_{α}$ and eigenvectors $∣ E_{α} >$ of the extended Hubbard dimer and we represent each part $E_{α} ∣ E_{α} >< E_{α} ∣$ of the dimer Hamiltonian $(α = 1, 2, ..., 16)$ in the…

cond-mat.str-el2005

Fermi level and phase transformations in GdCo $_{2}$

K. Gatner, A. N. Lachinov, M. Matlak +2

We performed three independent measurements for a polycristalline, ferromagnetic $G d C o_{2}$ sample in the temperature range from 300-440 K: chemical potential, current flow through t…

Electronic Correlations within Fermionic Lattice Models

Magnetism and superconductivity within extended Hubbard model for a dimer. Exact results

Fermi level and phase transformations in GdCo2​

Fermi level and phase transformations in GdCo $_{2}$