241 citations · 1.4k across the 48 of their papers we have counts for
37 papers · 1 filter
Field-induced vortex-like textures as a probe of the critical line in reentrant spin glasses
N. Martin, L. J. Bannenberg, M. Deutsch +4
We study the evolution of the low-temperature field-induced magnetic defects observed under an applied magnetic field in a series of frustrated amorphous ferromagnets (FeMn…
Onset of a skyrmion phase by chemical substitution in MnGe chiral magnet
E. Altynbaev, N. Martin, A. Heinemann +4
We study the evolution of the magnetic phase diagram of MnFeGe alloys with concentration () by small-angle neutron scattering. We unambiguously…
Spin Textures induced by Quenched Disorder in a Reentrant Spin Glass: Vortices versus "Frustrated" Skyrmions
I. Mirebeau, N. Martin, M. Deutsch +6
Reentrant spin glasses are frustrated disordered ferromagnets developing vortex-like textures under an applied magnetic field. Our study of a NiMn single crystal…
Disorder and Quantum spin ice
N. Martin, P. Bonville, E. Lhotel +7
We report on diffuse neutron scattering experiments providing evidence for the presence of random strains in the quantum spin ice candidate Pr2Zr2O7. Since Pr is a non-Kramers ion,…
Field induced phase diagram of the XY pyrochlore antiferromagnet ErTiO
E. Lhotel, J. Robert, E. Ressouche +9
We explore the field-temperature phase diagram of the XY pyrochlore antiferromagnet ErTiO, by means of magnetization and neutron diffraction experiments. Depending on t…
Antiferro-quadrupolar correlations in the quantum spin ice candidate Pr2Zr2O7
S. Petit, E. Lhotel, S. Guitteny O. Florea +9
We present an experimental study of the quantum spin ice candidate pyrochlore coumpound \przr\ by means of magnetization measurements, specific heat and neutron scattering up to 12…
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…
Field-induced magnetic structures in Tb2Ti2O7 spin liquid under field H || [111]
A. P. Sazonov, A. Gukasov, H. B. Cao +4
We have studied the field-induced magnetic structures of Tb2Ti2O7 pyrochlore by single-crystal neutron diffraction under a field applied along the [111] local anisotropy axis, up t…
Palmer-Chalker correlations in the XY pyrochlore antiferromagnet Er2Sn2O7
Solene Guitteny, Sylvain Petit, Elsa Lhotel +4
\ersn\, is considered, together with \erti, as a realization of the XY antiferromagnet on the pyrochlore lattice. We present magnetization measurements confirming that \ersn\, does…
Anisotropic propagative excitations and quadrupolar effects in TbTiO
Solène Guitteny, Julien Robert, Pierre Bonville +7
The dynamical magnetic correlations in \tbti\, have been investigated using polarized inelastic neutron scattering. Dispersive excitations are observed, emerging from pinch points…
Low temperature structural effects in the (TMTSF)PF and AsF Bechgaard salts
P. Foury-Leylekian, S. Petit, I. Mirebeau +6
We present a detailed low-temperature investigation of the statics and dynamics of the anions and methyl groups in the organic conductors (TMTSF)PF and (TMTSF)AsF (…
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 liquid correlations, anisotropic exchange and symmetry breaking in Tb2Ti2O7
Sylvain Petit, Pierre Bonville, Julien Robert +2
We have studied the low energy spin dynamics between 4.6K and 0.07K in a Tb2Ti2O7 single crystal sample, by means of inelastic neutron scattering experiments. The spectra consist i…
Effect of electron doping on the magnetic correlations in the bilayered brownmillerite compound Ca_{2.5-x}La_{x}Sr_{0.5}GaMn_{2}O_{8}: a neutron diffraction study
A. K. Bera, S. M. Yusuf, I. Mirebeau
The effect of electron doping on the magnetic properties of the Brownmillerite-type bilayered compounds has been investigated by neutron powder diffraction in La substituted Ca2.5-…
Double-layered monopolar order in Tb2Ti2O7 spin liquid
A. P. Sazonov, A. Gukasov, I. Mirebeau +1
Ho2Ti2O7 and Dy2Ti2O7 spin ices exhibit elementary excitations akin to magnetic monopoles. Here we focus on Tb2Ti2O7 spin liquid, where correlated magnetic moments keep fluctuating…
Spin dynamics in the ordered spin ice TbSnO
Sylvain Petit, Pierre Bonville, Isabelle Mirebeau +2
Geometrical frustration is a central challenge in contemporary condensed matter physics, a crucible favourable to the emergence of novel physics. The pyrochlore magnets, with rare…
TbTiO, a two singlet spin-liquid pyrochlore
P. Bonville, I. Mirebeau, A. Gukasov +2
The pyrochlore compound \tbti\ is known to remain in a spin-liquid state down to the lowest attainable temperature (0.05\,K), whereas current theories predict it should order into…
Field evolution of the magnetic structures in ErTiO through the critical point
H. B. Cao, I. Mirebeau, A. Gukasov +2
We have measured neutron diffraction patterns in a single crystal sample of the pyrochlore compound ErTiO in the antiferromagnetic phase (T=0.3\,K), as a function of th…
A new neutron study of the short range order inversion in FeCr
I. Mirebeau, G. Parette
We have performed new neutron diffuse scattering measurements in FeCr solid solutions, in a concentration range 0x0.15, where the atomic distribution shows an inv…
Field-Induced magnetic structures in Tb2Ti2O7 at low temperatures: From spin-ice to spin-flip structures
A. P. Sazonov, A. Gukasov, I. Mirebeau +4
We studied the field-induced magnetic structures of the Tb2Ti2O7 pyrochlore by single-crystal neutron diffraction with a magnetic field applied along a [110] axis, focusing on the…
Magnetic order in TbSnO under high pressure: from ordered spin ice to spin liquid and antiferromagnetic order
I. Mirebeau, I. Goncharenko, H. Cao +1
We have studied the TbSnO frustrated magnet by neutron diffraction under isotropic pressure of 4.6 GPa, combined with uniaxial pressure of 0.3 GPa, in the temperature r…
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…
Spin Density and Non-Collinear Magnetization in Frustrated Pyrochlore \tbti from Polarized Neutron Scattering
Arsen Gukasov, Huibo Cao, Isabelle Mirebeau +1
We used a local susceptibility approach in extensive polarized neutron diffraction studies of the spin liquid \tbti. For a magnetic field applied along the [110] and [111] directio…