132 citations · 290 across the 8 of their papers we have counts for
8 papers
Phase separation in iron chalcogenide superconductor Rb0.8+xFe1.6+ySe2 as seen by Raman light scattering and band structure calculations
Yu. Pashkevich, V. Gnezdilov, P. Lemmens +7
We report Raman light scattering in the phase separated superconducting single crystal Rb0.77Fe1.61Se2 with Tc = 32 K. The spectra have been measured in a wide temperature range 3K…
Uniaxial anisotropy and low-temperature antiferromagnetism of Mn2BO4 single crystal
N. V. Kazak, M. S. Platunov, Yu. V. Knyazev +8
The Mn2BO4 single crystals have been grown using the flux technique. The careful study crystal structure and magnetic properties have been carried out. The antiferromagnet transiti…
Crystal and local atomic structure of Co-doped MgFeBO_4 warwickites
N. V. Kazak, M. S. Platunov, Yu. V. Knyazev +10
Single crystalline MgFeBO_4, Mg_0.5Co_0.5FeBO_4 and CoFeBO_4 have been grown by the flux method. The samples have been characterized by X-ray spectral analysis, X-ray diffraction a…
Lattice and orbital fluctuations in TiPO4
Dirk Wulferding, Angela Möller, Kwang-Yong Choi +7
In the s = 1/2 antiferromagnetic spin chain material TiPO4 the formation of a spin gap takes place in a two step process with two characteristic temperatures, T*=111 K and TSP=74 K…
Anomalous optical phonons in FeTe pnictides: spin state, magnetic order, and lattice anharmonicity
V. Gnezdilov, Yu. Pashkevich, P. Lemmens +8
Polarized Raman-scattering spectra of non-superconducting, single-crystalline FeTe are investigated as function of temperature. We have found a relation between the magnitude of or…
Interplay of Rare Earth and Iron magnetism in RFeAsO with R = La, Ce, Pr, and Sm: A muon spin relaxation study and symmetry analysis
H. Maeter, H. Luetkens, Yu. G. Pashkevich +11
We report zero field muon spin relaxation (muSR) measurements on RFeAsO with R = La, Ce, Pr, and Sm. We study the interaction of the FeAs and R (rare earth) electronic systems in t…
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…
Microscopic Evidence of Spin State Order and Spin State Phase Separation in Layered Cobaltites RBaCo2O5.5 with R=Y, Tb, Dy, and Ho
H. Luetkens, M. Stingaciu, Yu. G. Pashkevich +6
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…