There exists presently considerable debate over the question whether local Coulomb interactions can explain the absence of the small e<Superscript>′</Superscript> <Subscript>g</Subscript> Fermi surface hole pockets in photoemission studies of Na<Subscript>0.3</Subscript>CoO<Subscript>2</Subscript>. By comparing dynamical mean field results for different single particle Hamiltonians and...</subscript></subscript></subscript></superscript>

In this paper a mean-field theory for the spin-liquid paramagnetic non-superconducting phase of the p- and n-type high-T<Subscript>c</Subscript> cuprates is developed. This theory applied to the effective t-t'-t′′-J<Superscript>*</Superscript> model with the ab initio calculated parameters and with the three-site correlated hoppings. The...</superscript></subscript>

Magnetic ordering of the first row transition metal intercalates of NbS<Subscript>2</Subscript> due to coupling between the conduction electrons and the intercalated ions has been explained in terms of Fermi surface nesting. We use angle-resolved photoelectron spectroscopy to investigate the Fermi surface topology and...</subscript>

We present the results of the ab initio theoretical study of the optical properties for PbFX (X = Cl, Br, I) compounds in its matlockite-type structure using the full potential linearized augmented plane wave (FP-LAPW) method as implemented in the WIEN2K code. We employed generalized gradient...

The oscillatory magnetoresistance spectrum of the organic metal (BEDO)<Subscript>5</Subscript>Ni(CN)<Subscript>4</Subscript>. 3C<Subscript>2</Subscript>H<Subscript>4</Subscript>(OH)<Subscript>2</Subsc ript> has been studied up to 50 T, in the temperature range from 1.5 K to 4.2 K. In high magnetic field, its Fermi surface corresponds to a linear chain of quasi-two-dimensional orbits coupled by magnetic...<//subsc></subscript></subscript></subscript></subscript></subscript>

In materials without an inversion center of symmetry the spin degeneracy of the conducting band is lifted by an antisymmetric spin orbit coupling (ASOC). Under such circumstances, spin and parity cannot be separately used to classify the Cooper pairing states. Consequently, the superconducting...