52 citations · 54 across the 3 of their papers we have counts for
8 papers · 1 filter
Raman scattering study of (KSr)FeAs ( = 0.0, 0.4)
A. P. Litvinchuk, V. G. Hadjiev, M. N. Iliev +3
Polarized Raman spectra of non-superconducting SrFeAs and superconducting KSrFeAs ( K) are reported. All four phonon modes (A + B$_…
Superconductivity up to 37 K in (A1-xSrx)Fe2As2 with A=K and Cs
K. Sasmal, B. Lv, B. Lorenz +4
A new hight Tc Fe-based compound system, AFe2As2 with A = K, Cs, K/Sr and Cs/Sr has been found. Through electron-doping, Tc of the A = K and Cs compounds rises to ~37 K, and finall…
Raman phonons in ReOFeAs (Re= Sm, La)
V. G. Hadjiev, M. N. Iliev, K. Sasmal +2
We report the polarized Raman spectra of undoped ReOFeAs (Re = Sm, La) collected at room temperature from surfaces of impurity free microcrystals. The spectra exhibit sharp ph…
Raman Phonons and Ageing-Related Surface Disorder in NaxCoO2
M. N. Iliev, A. P. Litvinchuk, R. L. Meng +3
The polarized Raman spectra from ab and ac surfaces of single crystal NaxCoO2 (x~0.7), parent compound of recently discovered superconductor NaxCoO2.yH2O, are reported and discusse…
Phase Separation, Magnetism and Superconductivity in Rutheno-Cuprates
B. Lorenz, Y. Y. Xue, C. W. Chu
The properties of the superconducting ferromagnets RuSr2(Gd/Eu)Cu2O8 and RuSr2(Ln/Ce)2Cu2O10 are reviewed. The problem of coexistence and competition between magnetic and supercond…
Hydrostatic Pressure Effect on the Superconducting Transition Temperature of MgB2
B. Lorenz, R. L. Meng, C. W. Chu
The pressure effect on the superconducting transition temperature of MgB2 has been determined using gas pressure up to 1 GPa. The transition temperature Tc was found to decrease li…