Anomalous spin waves and the commensurate-incommensurate magnetic phase transition in LiNiPO4 (2009)
Jensen, TBS, Christensen, NB, Kenzelmann, M, Ronnow, HM, Niedermayer, C, Andersen, NH, ...
Acoustic phonons in molten NaI (2009)
Hosokawa, S, Demmel, F, Pilgrim, WC, Inui, M, Tsutsui, S, Baron, A
Temperature-dependent next neighbour dynamics in liquid lead (2008)
Demmel, F, Howells, W S, Morkel, C
The temperature dependence of the density correlation function at next-neighbour distances has been investigated for the liquid metal lead. This correlation function is a sensitive parameter for...
Collective Dynamics of Lipid Membranes studied by Inelastic Neutron Scattering (2007)
Rheinstädter, M. C., Ollinger, C., Demmel, F., Fragneto, G., Salditt, T.
We have studied the collective short wavelength dynamics in deuterated DMPC bilayers by inelastic neutron scattering. The corresponding dispersion relation $\hbar\omega$(Q) is presented for the gel...
Coexistence of ferromagnetic and antiferromagnetic spin correlations in La1.2Sr1.8Mn2O7 (2006)
Chatterji, T., Koza, M. M., Demmel, F., Schmidt, W., Aman, U., ...
This version is available at the following Publisher URL: http://prb.aps.org
Demmel, F, Pasqualini, D, Morkel, C
Although the collective dynamics of liquid alkali metals are rather well understood near the melting point, there is not much research on these dynamics at temperatures higher than the melting...
de Gennes slowing in a liquid metal revisited: A neutron spin-echo study (2006)
Demmel, F, Fouquet, P, Häussler, W, Morkel, C
In liquids the decay of density fluctuations shows a slowing down at the structure factor maximum, which is well known as de Gennes narrowing. Molecular dynamics simulations of the liquid metal...
Coexistence of ferromagnetic and antiferromagnetic spin correlations in La1.2Sr1.8Mn2O7 (2006)
Chatterji, T, Koza, MM, Demmel, F, Schmidt, W, Hoffmann, JU, Amann, U, ...
Spin wave dispersion in orbitally ordered La1/2Sr3/2MnO4 (2006)
Senff, D, Krüger, F, Scheidl, S, Benomar, M, Sidis, Y, Demmel, F, ...
The FlatCone multianalyzer setup for ILL's three-axis spectrometers (2006)
Kempa, M, Janousova, B, Saroun, J, Flores, P, Boehm, M, Demmel, F, ...
Spin-wave dispersion in orbitally ordered La(0.5)Sr(1.5)MnO(4) (2005)
Senff, D., Krueger, F., Scheidl, S., Benomar, M., Sidis, Y., Demmel, F., ...
The magnon dispersion in the charge, orbital and spin ordered phase in La(0.5)Sr(1.5)MnO(4) has been studied by means of inelastic neutron scattering. We find an excellent agreement with a magnetic...
Spin dynamics of the quasi-2D ferromagnetic bilayer manganite La1.2Sr1.8Mn2O7 (2005)
Chatterji, T, Demmel, F, Dhalenne, G, Revcolevschi, A, Suryanarayanan, R
Self-dynamics of hydrogen gas as probed by means of inelastic neutron scattering (2005)
Guarini, E, Orecchini, A, Formisano, F, Demmel, F, Petrillo, C, Sacchetti, F, ...
Collective excitations in liquid CD4: neutron scattering and molecular-dynamics simulations (2005)
Guarini, E, Bafile, U, Barocchi, F, Demmel, F, Formisano, F, Sampoli, M, ...
Collective Dynamics of Lipid Membranes studied by Inelastic Neutron Scattering (2004)
Rheinstädter, M. C., Ollinger, C., Demmel, F., Fragneto, G., Salditt, T.
We have studied the collective short wavelength dynamics in deuterated DMPC bilayers by inelastic neutron scattering. The corresponding dispersion relation $\hbar\omega$(Q) is presented for the gel...
The performance of a multiplexing three-axis spectrometer (2004)
Demmel, F., Grach, N., Ronnow, H. M.
A novel multiplexing three-axis spectrometer for thermal neutrons has been tested for single-crystal spectroscopy. Measuring the entire 2D dispersion manifold in the bc plane of the spin-Peierls...
Collective dynamics of lipid membranes studied by inelastic neutron scattering (2004)
Rheinstädter, M C, Ollinger, C, Fragneto, G, Demmel, F, Salditt, T
Sacchetti, F, Guarini, E, Petrillo, C, Bove, L, Dorner, B, Demmel, F, ...
Caspary, D, Eckold, G, Elter, P, Gibhardt, H, Güthoff, F, Demmel, F, ...