46 citations · 247 across the 11 of their papers we have counts for
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Flat-band spin dynamics and phonon anomalies of the saw-tooth spin-chain system FeO(SeO)
V. P. Gnezdilov, Yu. G. Pashkevich, V. S. Kurnosov +11
Fe ions form saw-tooth like chains along the axis of the oxo-selenite FeO(SeO) and an onset of long-range magnetic order is observed for temperatur…
Longitudinal magnon, inversion breaking and magnetic instabilities in the pseudo-Kagome francisites Cu3Bi(SeO3)2O2X with X=Br, Cl
V. Gnezdilov, Yu. Pashkevich, V. Kurnosov +6
We performed Raman studies and a dielectric characterization of the pseudo-kagome Cu3Bi(SeO3)2O2X (X = Cl, Br). These compounds share competing nearest-neighbour ferromagnetic exch…
Coupling of spin and lattice modes in the S=1/2 two-dimensional antiferromagnet KVO with magneto-dielectric couplings
K. -Y. Choi, P. Lemmens, V. P. Gnezdilov +2
Lattice dynamics and magnetic excitations are investigated to elucidate the origin of magneto-dielectric effects in the S=1/2 two-dimensional quantum spin compound KVO.…
Dynamical lattice instability versus spin liquid state in a frustrated spin chain system
V. Gnezdilov, P. Lemmens, Yu. G. Pashkevich +4
The low-dimensional s=1/2 compound (NO)[Cu(NO3)3] has recently been suggested to follow the Nersesyan-Tsvelik model of coupled spin chains. Such a system shows unbound spinon excit…
Interplay of Spin and Lattice Degrees of Freedom in the Frustrated Antiferromagnet CdCr_2O_4: High-field and Temperature Induced Anomalies of the Elastic Constants
Subhro Bhattacharjee, S. Zherlitsyn, O. Chiatti +7
Temperature and magnetic field studies of the elastic constants of the chromium spinel CdCr_2O_4 show pronounced anomalies related to strong spin-phonon coupling in this frustrated…
Spectral sensitive phonon wipeout due to a fluctuating spin state in a Fe2+ coordination polymer
V. Gnezdilov, P. Lemmens, P. Scheib +7
Raman scattering in the spin-crossover system [Fe(pmd)(H2O){Au(CN)2}2]*H2O reveals a complex three-phase spin-state transition in contrast to earlier observations in magnetization…
Magnetic crossover and complex excitation spectrum of the ferromagnetic/antiferromagnetic spin-1/2 chain system alpha-TeVO4
V. Gnezdilov, P. Lemmens, A. A. Zvyagin +5
We report magnetic susceptibility, specific heat, and Raman scattering investigations of alpha-TeVO4 containing V-O edge-sharing chains. These chains promote a system of ferromagne…
Evidence for local lattice distortions in giant magnetocapacitive CdCr2S4
V. Gnezdilov, P. Lemmens, Yu. G. Pashkevich +6
Raman scattering experiments on CdCr2S4 single crystals show pronounced anomalies in intensity and frequency of optical phonon modes with an onset temperature T*=130 K that coincid…
Orbiton-mediated multi-phonon scattering in LaSrMnO
K. -Y. Choi, P. Lemmens, G. Güntherodt +6
We report on Raman scattering measurements of single crystalline LaSrMnO (=0, 0.06, 0.09 and 0.125), focusing on the high frequency regime. We observe multi-phon…