28 citations · 56 across the 6 of their papers we have counts for
6 papers
Topological (Sliced) Doping of a 3D Peierls System: Predicted Structure of Doped BaBiO3
Ilka B. Bischofs, Philip B. Allen, Vladimir N. Kostur +1
At hole concentrations below x=0.4, Ba_(1-x)K_xBiO_3 is non-metallic. At x=0, pure BaBiO3 is a Peierls insulator. Very dilute holes create bipolaronic point defects in the Peierls…
Polaron and Bipolaron Defects in a Charge Density Wave: a Model for Lightly Doped BaBiO3
Ilka B. Bischofs, Vladimir N. Kostur, Philip B. Allen
BaBiO3 is a prototype ``charge ordering system'' forming interpenetrating sublattices with nominal valence Bi(3+) and Bi(5+). It can also be regarded as a three-dimensional version…
Polaron and bipolaron formation in a cubic perovskite lattice
Vladimir N. Kostur, Philip B. Allen
The Rice-Sneddon model for BaBiO is a nice model Hamiltonian for considering the properties of polarons and bipolarons in a three-dimensional oxide crystal. We use exact diagon…
c-Axis Penetration Depth in the Cuprates: Additional Evidence for Incoherent Hopping
R. J. Radtke, V. N. Kostur
Measurements of the -axis penetration depth in the cuprates reveal a low-temperature dependence which is inconsistent with simple models of coupling between the CuO$_2…
Phonon `notches' in a-b -plane optical conductivity of high-Tc superconductors
Vladimir N. Kostur
It is shown that a correlation between the positions of the -axis longitudinal optic () phonons and ``notch''-like structures in the - plane conductivity of high-$T_…
Ultrasonic attenuation in d-wave superconductors
Vladimir N. Kostur, Jayanta K. Bhattacharjee, Richard A. Ferrell
The longitudinal ultrasonic attenuation at low temperatures for a -wave superconducting order parameter is examined. The ratio of the superconducting to normal state attenuation…