81 citations · 298 across the 11 of their papers we have counts for
9 papers · 1 filter
Topological band structure of excitons in octochlore KTbF: an analog of the Luttinger Semimetal
Olivier Demortier, Françoise Damay, Paul McClarty +3
Understanding the symmetry and topology of band structures in crystalline solids has been among the defining themes of a generation of condensed matter physicists, with implication…
Impact of disorder in Nd-based pyrochlore magnets
Mélanie Léger, Florianne Vayer, Monica Ciomaga Hatnean +11
We study the stability of the antiferromagnetic all-in--all-out state observed in dipolar-octupolar pyrochlores that have neodymium as the magnetic species. Different types of diso…
Spin dynamics in the presence of competing ferro- and antiferro-magnetic correlations in Yb2Ti2O7
J. Robert, E. Lhotel, G. Remenyi +5
In this work, we show that the zero field excitation spectra in the quantum spin ice candidate pyrochlore compound \ybti\ is a continuum characterized by a very broad and almost fl…
Mesoscopic correlations in Tb2Ti2O7 spin liquid
S. Guitteny, I. Mirebeau, P. Dalmas de Réotier +6
We have studied the spin correlations with = (, , ) propagation vector which appear below 0.4\, K in \tbti\ spin liquid by combining powder neutr…
Order by Disorder and Energetic Selection of the Ground State in the XY Pyrochlore Antiferromagnet Er2Ti2O7. An Inelastic Neutron Scattering Study
S. Petit, J. Robert, S. Guitteny +6
Examples of materials where an "order by disorder" mechanism is at play to select a particular ground state are scarce. It has recently been proposed, however, that the antiferroma…
Magneto- to electro-active transmutation of spin waves in ErMnO3
Laura Chaix, Sophie De Brion, Sylvain Petit +10
The low energy dynamical properties of the multiferroic hexagonal perovskite ErMnO3 have been studied by inelastic neutron scattering as well as terahertz and far infrared spectros…
Magnetisation process in Er2Ti2O7 and Tb2Ti2O7 at very low temperature
Pierre Bonville, Sylvain Petit, Isabelle Mirebeau +3
We present a model which accounts for the high field magnetisation at very low temperature in two pyrochlore frustrated systems, Er2Ti2O7 and Tb2Ti2O7. The two compounds present ve…
Spin-lattice coupling, frustration and magnetic order in multiferroic RMnO3
X. Fabreges, S. Petit, I. Mirebeau +5
We have performed high resolution neutron diffraction and inelastic neutron scattering experiments in the frustrated multiferroic hexagonal compounds RMnO3 (R=Ho, Yb, Sc, Y), which…
Quantized spin waves in the metallic state of magnetoresistive manganites
S. Petit, M. Hennion, F. Moussa +4
High resolution spin waves measurements have been carried out in ferromagnetic (F) La(1-x)(Sr,Ca)xMnO3 with x(Sr)=0.15, 0.175, 0.2, 0.3 and x(Ca)=0.3. In all q-directions, close to…