M. Lindroos

One-band tight-binding model parametrization of the high-Tc cuprates, including the effect of kz-dispersion

We discuss the effects of interlayer hopping and the resulting kz dispersion in the cuprates within the framework of the one-band tight-binding model Hamiltonian. Specific forms of the dispersion relations in terms of the in-plane hopping parameters t, t, t, and t and the effective interlayer hopping tz in La2x7fxSrxCuO4 LSCO and Nd2x7fxCexCuO4 NCCO and the added intracell hopping tbi between the CuO2 bilayers in Bi2Sr2CaCu2O8 Bi2212 are presented. The values of the “bare” parameters are obtained via fits with the first-principles local-density-approximation- LDA- based band structures in LSCO, NCCO, and Bi2212. The corresponding “dressed” parameter sets which account for correlation effects beyond the LDA are derived by fitting experimental Fermi surface FS maps and dispersions near the Fermi energy in optimally doped and overdoped systems. The interlayer couplings tz and tbi are found generally to be a substantial fraction of the in-plane hopping t, although the value of tz in NCCO is anomalously small, reflecting absence of apical O atoms in the crystal structure. Our results provide some insight into the issues of the determination of doping from experimental FS maps in Bi2212, the role of intercell coupling in c-axis transport, and the possible correlations between the doping dependences of the binding energies of the Van Hove singularities and various prominent features observed in the angle-resolved photoemission and tunneling spectra of the cuprates.

Influence of the third dimension of quasi-two-dimensional cuprate superconductors on angle-resolved photoemission spectra

Angle-resolved photoemission spectroscopy (ARPES) presents significant simplifications in analyzing strictly two-dimensional (2D) materials, but even the most anisotropic physical systems display some residual three-dimensionality. Here we demonstrate how this third dimension manifests itself in ARPES spectra of quasi-2D materials by considering the example of the cuprate

Reversal of the Circular Dichroism in Angle-Resolved Photoemission from Bi 2 Te 3

{mathrm{Bi}}_{2}{mathrm{Sr}}_{2}mathrm{Ca}{mathrm{Cu}}_{2}{mathrm{O}}_{8}

Angle resolved photoemission from YBa2Cu3O7: Signature of CuO2 plane bands

(Bi2212). The intercell, interlayer hopping, which is responsible for

Signature of the CuO2 plane related bands in YBa2Cu3O6.9 as seen by angle-resolved photoemission

{k}_{z}

Role of site selectivity, dimensionality, and strong correlations in angle-resolved photoemission from cuprate superconductors

dispersion of the bands, is found to induce an irreducible broadening to the ARPES line shapes with a characteristic dependence on the in-plane momentum

First principles simulations of energy and polarization dependent angle-resolved photoemission spectra of Bi2212

{k}_{ensuremath{Vert}}

MATRIX ELEMENT EFFECTS IN THE ANGLE-RESOLVED PHOTOEMISSION SPECTRUM OF BISCO

. Our study suggests that ARPES line shapes can provide a direct spectroscopic window for establishing the existence of coherent

Angle-resolved photo-intensities in high-Tcs: Surface states, CuO2 plane bands, lineshapes, and related issues

c

First principles angle-resolved photoemission intensity calculations for YBa2Cu3O7(001)-surface

-axis conductivity in a material via the detection of this broadening mechanism, and bears on the understanding of 2D to 3D crossover and pseudogap and stripe physics in novel materials through ARPES experiments.