93 citations · 245 across the 7 of their papers we have counts for
7 papers
Dynamic rotor mode in antiferromagnetic nanoparticles
K. Lefmann, H. Jacobsen, J. Garde +6
We present experimental, numerical, and theoretical evidence for a new mode of antiferromagnetic dynamics in nanoparticles. Elastic neutron scattering experiments on 8 nm particles…
Scaling the Temperature-dependent Boson Peak of Vitreous Silica with the high-frequency Bulk Modulus derived from Brillouin Scattering Data
B. Rufflé, S. Ayrinhac, E. Courtens +4
The position and strength of the boson peak in silica glass vary considerably with temperature . Such variations cannot be explained solely with changes in the Debye energy. New…
Dielectric and thermal relaxation in the energy landscape
U. Buchenau, R. Zorn, M. Ohl +1
We derive an energy landscape interpretation of dielectric relaxation times in undercooled liquids, comparing it to the traditional Debye and Gemant-DiMarzio-Bishop pictures. The i…
A new interpretation of dielectric data in molecular glass formers
U. Buchenau, M. Ohl, A. Wischnewski
Literature dielectric data of glycerol, propylene carbonate and ortho-terphenyl (OTP) show that the measured dielectric relaxation is a decade faster than the Debye expectation, bu…
Neutron scattering evidence on the nature of the boson peak
U. Buchenau, A. Wischnewski, M. Ohl +1
A close inspection of neutron spectra of glass formers in the frequency region above the boson peak does not show the constant eigenvalue density expected for a random dynamical ma…
Fragility and compressibility at the glass transition
U. Buchenau, A. Wischnewski
Isothermal compressibilities and Brillouin sound velocities from the literature allow to separate the compressibility at the glass transition into a high-frequency vibrational and…