72 citations · 198 across the 6 of their papers we have counts for
5 papers
Magnetic order in the quasi-one-dimensional Ising system RbCoCl
N. P. Hänni, D. Sheptyakov, M. Mena +9
The dynamical properties of free and bound domain-wall excitations in Ising-chain materials have recently become the focus of intense research interest. New materials and spectrome…
Thermal control of spin excitations in the coupled Ising-chain material RbCoCl3
M. Mena, N. Hänni, S. Ward +8
We have used neutron spectroscopy to investigate the spin dynamics of the quantum (S = 1/2) antiferromagnetic Ising chains in RbCoCl3. The structure and magnetic interactions in th…
Bound states and field-polarized Haldane modes in a quantum spin ladder
S. Ward, P. Bouillot, C. Kollath +10
The challenge of one-dimensional systems is to understand their physics beyond the level of known elementary excitations. By high-resolution neutron spectroscopy in a quantum spin…
Spin wave spectrum of the quantum ferromagnet on the pyrochlore lattice Lu2V2O7
M. Mena, R. S. Perry, T. G. Perring +6
Neutron inelastic scattering has been used to probe the spin dynamics of the quantum (S=1/2) ferromagnet on the pyrochlore lattice Lu2V2O7. Well-defined spin waves are observed at…
1D to 2D Na Ion Diffusion Inherently Linked to Structural Transitions in NaCoO
M. Medarde, M. Mena, J. L. Gavilano +9
We report the observation of a stepwise "melting" of the low-temperature Na-vacancy order in the layered transition metal oxide Na0.7CoO2. High-resolution neutron powder diffractio…