40 citations · 139 across the 7 of their papers we have counts for
7 papers
Local lattice distortions vs. structural phase transition in NdFeAsO1-xFx
M. Calamiotou, D. Lampakis, N. D. Zhigadlo +5
The lattice properties at low temperatures of two samples of NdFeAsO1-xFx (x=0.05 and 0.25) have been examined in order to investigate possible structural phase transition that may…
Pressure-induced lattice instabilities and superconductivity in YBa2Cu4O8 and optimally doped YBa2Cu3O7-δ
M. Calamiotou, A. Gantis, E. Siranidi +3
Combined synchrotron angle-dispersive powder diffraction and micro-Raman spectroscopy are used to investigate the pressure-induced lattice instabilities that are accompanied by T$_…
Micro-Raman evidence for topological charge order across the superconducting dome of La_{2-x)SrxCuO4
D. Lampakis, E. Liarokapis, C. Panagopoulos
The doping dependence of the micro-Raman spectra of high quality La_{2-x}Sr_xCuO_4 microcrystals with x=0.0-0.45 has been investigated in the region 10-300 K. The phonon at ~100 cm…
Lattice effects in the LaSrCuO compounds
E. Liarokapis, E. Siranidi, D. Lampakis +2
Systematic Raman studies on several cuprates (YBaCuO, YBaCuO or BiSrCaCuO) have…
Isotope effect on the E2g phonon and mesoscopic phase separation near the electronic topological transition in Mg1-xAlxB2
L. Simonelli, V. Palmisano, M. Fratini +5
We report the boron isotope effect on the E2g phonon mode by micro-Raman spectroscopy on the ternary Mg1-xAlxB2 system, synthesized with pure isotopes 10B and 11B. The isotope coef…
Site-selective oxygen isotope effect on the magnetic field penetration depth in underdoped YPrBaCuO
R. Khasanov, A. Shengelaya, E. Morenzoni +7
We report site-selective oxygen isotope (O/O) effect (OIE) measurements on the in-plane penetration depth in underdoped YPrBaCuO$_{7…