22 citations · 27 across the 5 of their papers we have counts for
5 papers
Similarity of the Boson Peaks in Disordered Systems to the van Hove Singularities in Regular Crystals
I. A. Gospodarev, V. I. Grishaev, O. V. Kotlyar +6
Phonon spectra of solid substitutional solutions with finite concentrations of impurities were analyzed on the microscopic level. The local phonon densities of impurity atoms were…
Dynamical Dzyaloshinsky-Moriya interaction in KCuF3: Raman evidence for an antiferrodistortive lattice instability
V. Gnezdilov, J. Deisenhofer, P. Lemmens +5
In the orbitally ordered, quasi-one dimensional Heisenberg antiferromagnet KCuF3 the low-energy Eg and B1g phonon modes show an anomalous softening (25% and 13%) between room tempe…
Low temperature mixed spin state of Co3+ in LaCoO3 evidenced from Jahn-Teller lattice distortions
V. Gnezdilov, K. -Y. Choi, Yu. Pashkevich +6
One- and multi-phonon excitations of the single crystalline LaCoO3 were studied using Raman spectroscopy in the temperature region of 5 K - 300 K. First-order Raman spectra show a…
Interplay of structural and electronic phase separation in single crystalline La(2)CuO(4.05) studied by neutron and Raman scattering
V. P. Gnezdilov, Yu. G. Pashkevich, J. M. Tranquada +7
We report a neutron and Raman scattering study of a single-crystal of La(2)CuO(4.05) prepared by high temperature electrochemical oxidation. Elastic neutron scattering measurements…
Phonon Raman scattering in LaMn1-xCoxO3 (x = 0, 0.2, 0.3, 0.4, and 1.0)
V. P. Gnezdilov, Yu. G. Pashkevich, A. V. Yeremenko +5
The Raman-active phonons in perovskite-like LaMn1-xCoxO3 (x = 0, 0.2, 0.3, 0.4, and 1.0) were studied by measuring Raman spectra at temperatures of 295 and 5 K. The changes in the…