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8 papers · 2 filters
Coexistence of dimerization and long-range magnetic order in the quantum antiferromagnetic compound LiCu2O2: inelastic light scattering study
K. -Y. Choi, S. A. Zvyagin, G. Cao +1
Raman scattering studies of the frustrated spin chain system LiCuO are reported. Two transitions into a magnetically ordered phase (taken place at temperatures 9…
Interplay between Freezing and Superconductivity in the Optimally Doped LaEu0.20Sr0.15CuO4 under Hydrostatic Pressure
B. Simovic, M. Nicklas, P. C. Hammel +3
We study the electronic properties of a LaEu0.20Sr0.15CuO4 single crystal under hydrostatic pressure up to 2.9 GPa. Both the freezing of the Cu 3d moments and the structural transi…
Effect of Na content and hydration on the excitation spectrum of the cobaltite Na_xCoO_2 yH_2O
P. Lemmens, V. Gnezdilov, N. N. Kovaleva +8
We report on a Raman scattering study on the superconducting cobaltite as function of Na content and hydration (x1/3, 3/4 and y0, 2/3, 4/3)…
Magnon-Hole Scattering and Charge Order in
C. Hess, H. ElHaes, B. Büchner +3
The magnon thermal conductivity of the hole doped spin ladders in has been investigated at low doping levels . The analysis o…
Evidence for Jahn-Teller distortions at the antiferromagnetic transition in LaTiO
J. Hemberger, H. -A. Krug von Nidda, V. Fritsch +8
LaTiO is known as Mott-insulator which orders antiferromagnetically at K. We report on results of thermal expansion and temperature dependent x-ray diffraction…
Longitudinal magnon in the tetrahedral spin system Cu2Te2O5Br2 near quantum criticality
C. Gros, P. Lemmens, M. Vojta +8
We present a comprehensive study of the coupled tetrahedra-compound Cu2Te2O5Br2 by theory and experiments in external magnetic fields. We report the observation of a longitudinal m…