Gnezdilov, V., Lemmens, P., Zvyagin, A. A., Cheranovskii, V. O., Lamonova, K., Pashkevich, Yu. G., ...
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...
Luetkens, H., Stingaciu, M., Pashkevich, Yu. G., Conder, K., Pomjakushina, E., Gusev, A. A., ...
We report muon spin relaxation measurements on the magnetic structures of RBaCo_2O_5.5 with R=Y, Tb, Dy, and Ho. Three different phases, one ferrimagnetic and two antiferromagnetic, are identified...
Evidence for local lattice distortions in giant magnetocapacitive CdCr2S4 (2007)
Gnezdilov, V., Lemmens, P., Pashkevich, Yu. G., Scheib, P., Payen, Ch., Choi, K. Y., ...
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 coincides with the regime...
Pashkevich, Yu. G., Gnezdilov, V. P., Lemmens, P., Güntherodt, G., Eremenko, A. V., ...
Giant softening by 30 cm$^{-1}$ of the 490- and 620-cm$^{-1}$ modes is observed by Raman scattering measurements below the Curie temperature of single crystalline LaMnO$_{3+\delta}$ ($0.085\leq...
Orbiton-mediated multi-phonon scattering in La$_{1-x}$Sr$_x$MnO$_3$ (2005)
Lemmens, P., Güntherodt, G., Pashkevich, Yu. G., Gnezdilov, V. P., Reutler, P., ...
We report on Raman scattering measurements of single crystalline La$_{1-x}$Sr$_x$MnO$_3$ ($x$=0, 0.06, 0.09 and 0.125), focusing on the high frequency regime. We observe multi-phonon scattering...
Gnezdilov, V. P., Pashkevich, Yu. G., Tranquada, J. M., Lemmens, P., Guentherodt, G., Yeremenko, A. V., ...
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 show the presence...
Phonon Raman scattering in LaMn1-xCoxO3 (x = 0, 0.2, 0.3, 0.4, and 1.0) (2004)
Gnezdilov, V. P., Pashkevich, Yu. G., Yeremenko, A. V., Lemmens, P., Guentherodt, G., Shiryaev, S. V., ...
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 spectra with Co...
Existence of orbital polarons in ferromagnetic insulating La$_{1-x}$Sr$_x$MnO$_{3}$ (0.11$ (2004)
Lemmens, P., Güntherodt, G., Pashkevich, Yu. G., Gnezdilov, V. P., Reutler, P., ...
We present an inelastic light scattering study of single crystalline (La$_{1-y}$Pr$_y$)$_{1-x}$Sr$_{x}$MnO$_3$ ($0\leq x\leq0.14$,$y=0$ and $x=1/8$,$0\leq y\leq0.5$). A giant softening up to 20 - 30...
NQR of barium in BaBiO3 and BaPbO3 (2000)
Savosta, M. M., Doroshev, V. D., Borodin, V. A., Pashkevich, Yu. G., Kamenev, V. I., Tarasenko, T. N., ...
The NQR on Ba nuclei was studied in four samples of BaBiO3 prepared in different ways and, in addition, in BaPbO3. The spectrum of $^{137}$Ba at T=4.2 K consists of relatively broad line centered...
Charge ordering, phase separation and charge pairing in layered 3D systems (1999)
Pashkevich, Yu. G., Filippov, A. E.
The processes of Coulomb gas ordering in 3D layered system are studied by means of Brownian dynamics approach. It is found that at different densities of the carriers the 3D lattice of charges as...
Stripe Conductivity in La(1.775)Sr(0.225)NiO(4) (1999)
Pashkevich, Yu. G., Blinkin, V. A., Gnezdilov, V. P., Tsapenko, V. V., Eremenko, V. V., Lemmens, P., ...
We report Raman light-scattering and optical conductivity measurements on a single crystal of La(1.775)Sr(0.225)NiO(4) which exhibits incommensurate charge-stripe order. The extra phonon peaks...