Zobrazeno 1 - 10
of 670
pro vyhledávání: '"Mirebeau I"'
Autor:
Martin, N., Bannenberg, L. J., Deutsch, M., Pappas, C., Chaboussant, G., Cubitt, R., Mirebeau, I.
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 (Fe$_{1-x}$Mn$_{x}$)$_{75}$P$_{16}$B$_{3}$Al$_{3}$ (a-FeMn). Combining small-angle
Externí odkaz:
http://arxiv.org/abs/2105.08660
Autor:
Altynbaev, E., Martin, N., Heinemann, A., Fomicheva, L., Tsvyashchenko, A., Mirebeau, I., Grigoriev, S.
Publikováno v:
Phys. Rev. B 101, 100404 (2020)
We study the evolution of the magnetic phase diagram of Mn$_{1-x}$Fe$_{x}$Ge alloys with concentration $x$ ($0 \leq x \leq 0.3$) by small-angle neutron scattering. We unambiguously observe the absence of a skyrmion lattice (or A-phase) in bulk MnGe a
Externí odkaz:
http://arxiv.org/abs/1911.12190
Autor:
Mirebeau, I., Martin, N., Deutsch, M., Bannenberg, L. J., Pappas, C., Chaboussant, G., Cubitt, R., Decorse, C., Leonov, A. O.
Publikováno v:
Physical Review B 98, 014420 (2018)
Reentrant spin glasses are frustrated disordered ferromagnets developing vortex-like textures under an applied magnetic field. Our study of a Ni$_{0.81}$Mn$_{0.19}$ single crystal by small angle neutron scattering clarifies their internal structure a
Externí odkaz:
http://arxiv.org/abs/1807.01311
Autor:
Martin, N., Bonville, P., Lhotel, E., Guitteny, S., Wildes, A., Decorse, C., Hatnean, M. Ciomaga, Balakrishnan, G., Mirebeau, I., Petit, S.
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, the strain deeply modifies the picture of Ising magnetic moments gove
Externí odkaz:
http://arxiv.org/abs/1708.01845
Autor:
Martin, N., Deutsch, M., Chaboussant, G., Damay, F., Bonville, P., Fomicheva, L. N., Tsvyashchenko, A. V., Rössler, U. K., Mirebeau, I.
Publikováno v:
Phys. Rev. B 96, 020413 (2017)
We study the evolution of helical magnetism in MnGe chiral magnet upon partial substitution of Mn for non magnetic 3d-Co and 4d-Rh ions. At high doping levels, we observe spin helices with very long periods -more than ten times larger than in the pur
Externí odkaz:
http://arxiv.org/abs/1702.06511
Autor:
Lhotel, E., Robert, J., Ressouche, E., Damay, F., Mirebeau, I., Ollivier, J., Mutka, H., de Réotier, P. Dalmas, Yaouanc, A., Marin, C., Decorse, C., Petit, S.
Publikováno v:
Phys. Rev. B 95, 134426 (2017)
We explore the field-temperature phase diagram of the XY pyrochlore antiferromagnet Er$_2$Ti$_2$O$_7$, by means of magnetization and neutron diffraction experiments. Depending on the field strength and direction relative to the high symmetry cubic di
Externí odkaz:
http://arxiv.org/abs/1701.07220
Autor:
Petit, S., Lhotel, E., Florea, S. Guitteny O., Robert, J., Bonville, P., Mirebeau, I., Ollivier, J., Mutka, H., Ressouche, E., Decorse, C., Hatnean, M. Ciomaga, Balakrishnan, G.
Publikováno v:
Phys. Rev. B 94, 165153 (2016)
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 T and down to 60 mK. When the field is applied along the $[111]$ and
Externí odkaz:
http://arxiv.org/abs/1609.01391
Autor:
Martin, N., Deutsch, M., Bert, F., Andreica, D., Amato, A., Bonfà, P., De Renzi, R., Rössler, U. K., Bonville, P., Fomicheva, L. N., Tsvyashchenko, A. V., Mirebeau, I.
Publikováno v:
Phys. Rev. B 93, 174405 (2016)
We have studied by muon spin resonance ({\mu}SR) the helical ground state and fluctuating chiral phase recently observed in the MnGe chiral magnet. At low temperature, the muon polarization shows double period oscillations at short time scales. Their
Externí odkaz:
http://arxiv.org/abs/1602.01756
Autor:
Martin, N., Mirebeau, I., Deutsch, M., Itié, J. -P., Rueff, J. -P., Rössler, U. K., Koepernik, K., Fomicheva, L. N., Tsvyashchenko, A. V.
Publikováno v:
Phys. Rev. B 93, 214404 (2016)
Itinerant magnets generally exhibit pressure induced transitions towards non magnetic states. Using synchrotron based X-ray diffraction and emission spectroscopy, the evolution of the lattice and spin moment in the chiral magnet MnGe was investigated
Externí odkaz:
http://arxiv.org/abs/1601.05332
Autor:
Guitteny, S., Mirebeau, I., de Réotier, P. Dalmas, Colin, C., Bonville, P., Porcher, F., Grenier, B., Decorse, C., Petit, S.
We have studied the spin correlations with $\bf{k}$= ($\frac12$, $\frac12$, $\frac12$) propagation vector which appear below 0.4\, K in \tbti\ spin liquid by combining powder neutron diffraction and specific heat on Tb$_{2+x}$Ti$_{2-x}$O$_{7+y}$ samp
Externí odkaz:
http://arxiv.org/abs/1506.07604