Interband effects in the c-axis optical conductivity inYBa2Cu3O7−δ

v 1 2 7 A ug 1 99 6 Interband effects in the c - axis optical conductivity in YBa

Optical conductivity and direct interband transitions in Gd

Structure found in the optical conductivity for radiation polarized parallel and perpendicular to the c-axis of a single-crystal of Gd below the Curie temperature has been correlated with direct interband transitions as derived from the spin-polarized conduction bands with the inclusion of the spin-orbit interaction as a perturbation. Spin-flip transitions not allowed for in the eleclric dipole...

Signatures of bilayer splitting in the c-axis optical conductivity of double layer cuprates

We report on the infrared studies of the interlayer response for a series of YBa2Cu3Ox high-Tc superconductors with Pr, Ni, and Zn dopants, as well as for the optimally doped crystals of Bi2Sr2CaCu2Oz . These experimental results have motivated us to reexamine some of the long-standing issues in the interlayer electrodynamics of cuprates. Among them are the origins of the anomalous resonance sp...

Interband optical transitions in DNA-like systems

The underlying band structure of the uniform DNA suggests the allowance of interband optical transitions. We consider such transitions in the uniform synthetic DNA, such as the poly G -poly C DNA, within a simple tight-binding model with a minimum set of parameters. We demonstrate that the helical conformation of the DNA strands results in unusual interband optical transitions all of which appe...

the effects of changing roughness on the flow structure in the bends

flow in natural river bends is a complex and turbulent phenomenon which affects the scour and sedimentations and causes an irregular bed topography on the bed. for the reason, the flow hydralics and the parameters which affect the flow to be studied and understand. in this study the effect of bed and wall roughness using the software fluent discussed in a sharp 90-degree flume bend with 40.3cm ...