93 citations · 935 across the 30 of their papers we have counts for
5 papers · 1 filter
Magnetoelastic coupling and spin excitations in the spin-gap system (VO)PO: A Raman scattering study
M. Grove, P. Lemmens, G. Güntherodt +3
Single crystals of the spin-gap system have been investigated by means of Raman scattering. At temperatures below T=75 K~, with $Δ_{0…
Electron-phonon and spin-phonon coupling in NaVO: charge fluctuations effect
E. Ya. Sherman, M. Fischer, P. Lemmens +2
We show that the asymmetric crystal environment of the V site in the ladder compound NaVO leads to a strong coupling of vanadium 3d electrons to phonons. This coupling…
Quantum Spin Systems: From Spin Gaps to Pseudo Gaps
P. Lemmens, M. Fischer, M. Grove +5
Many low dimensional spin systems with a dimerized or ladder-like antiferromagnetic exchange coupling have a gapped excitation spectrum with magnetic bound states within the spin g…
Stripe Conductivity in La(1.775)Sr(0.225)NiO(4)
Yu. G. Pashkevich, V. A. Blinkin, V. P. Gnezdilov +10
We report Raman light-scattering and optical conductivity measurements on a single crystal of La(1.775)Sr(0.225)NiO(4) which exhibits incommensurate charge-stripe order. The extra…
Spin gap behavior and charge ordering in α^{\prime}-NaV_2O_5 probed by light scattering
M. Fischer, P. Lemmens, G. Els +5
We present a detailed analysis of light scattering experiments performed on the quarter-filled spin ladder compound -NaVO for the temperature range 5 KT$…