Zobrazeno 1 - 10
of 312
pro vyhledávání: '"Petit Sylvain"'
Autor:
Bhardwaj, Anish, Porée, Victor, Yan, Han, Gauthier, Nicolas, Lhotel, Elsa, Petit, Sylvain, Quilliam, Jeffrey A., Nevidomskyy, Andriy H., Sibille, Romain, Changlani, Hitesh J.
The recently discovered dipole-octupole pyrochlore magnet Ce$_2$Hf$_2$O$_7$ is a promising three-dimensional quantum spin liquid candidate which shows no signs of ordering at low temperature. The low energy effective pseudospin-1/2 description in a m
Externí odkaz:
http://arxiv.org/abs/2402.08723
Autor:
Léger, Mélanie, Vayer, Florianne, Hatnean, Monica Ciomaga, Damay, Françoise, Decorse, Claudia, Berardan, David, Fåk, Björn, Zanotti, Jean-Marc, Berrod, Quentin, Embs, Jacques Ollivier Jan P., Fennell, Tom, Sheptyakov, Denis, Petit, Sylvain, Lhotel, Elsa
Publikováno v:
Phys. Rev. B 109, 224416 (2024)
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 disorder are considered, either affecting the immediate environment of the
Externí odkaz:
http://arxiv.org/abs/2401.15027
Autor:
Porée, Victor, Bhardwaj, Anish, Lhotel, Elsa, Petit, Sylvain, Gauthier, Nicolas, Yan, Han, Pomjakushin, Vladimir, Ollivier, Jacques, Quilliam, Jeffrey A., Nevidomskyy, Andriy H., Changlani, Hitesh J., Sibille, Romain
We investigate the correlated state of Ce$_2$Hf$_2$O$_7$ using neutron scattering, finding signatures of correlations of both dipolar and octupolar character. A dipolar inelastic signal is also observed, as expected for spinons in a quantum spin ice
Externí odkaz:
http://arxiv.org/abs/2305.08261
Autor:
Porée, Victor, Yan, Han, Desrochers, Félix, Petit, Sylvain, Lhotel, Elsa, Appel, Markus, Ollivier, Jacques, Kim, Yong Baek, Nevidomskyy, Andriy H., Sibille, Romain
Electronic spins can form long-range entangled phases of condensed matter named quantum spin liquids. Their existence is conceptualized in models of two- or three-dimensional frustrated magnets that evade symmetry-breaking order down to zero temperat
Externí odkaz:
http://arxiv.org/abs/2304.05452
Autor:
Takayoshi, Shintaro, Faure, Quentin, Simonet, Virginie, Grenier, Béatrice, Petit, Sylvain, Ollivier, Jacques, Lejay, Pascal, Giamarchi, Thierry
Publikováno v:
Phys. Rev. Research 5, 023205 (2023)
By combining inelastic neutron scattering and numerical simulations, we study the quasi-one dimensional Ising-like quantum antiferromagnet BaCo$_{2}$V$_{2}$O$_{8}$ in a longitudinal magnetic field applied along the magnetic anisotropy axis, which is
Externí odkaz:
http://arxiv.org/abs/2302.03833
Autor:
Petit Sylvain
Publikováno v:
EPJ Web of Conferences, Vol 155, p 00007 (2017)
The goal of the JDN22 school was to propose a progressive teaching eager to improve the expertise of students in neutron diffraction. Neutron-based techniques have indeed proved for decades to be essential tools in the investigation of condensed matt
Externí odkaz:
https://doaj.org/article/d2d2b8ecb43d4ddfb562402e54f9a858
Autor:
Porée, Victor, Lhotel, Elsa, Petit, Sylvain, Krajewska, Aleksandra, Puphal, Pascal, Clark, Adam H., Pomjakushin, Vladimir, Walker, Helen C., Gauthier, Nicolas, Gawryluk, Dariusz J., Sibille, Romain
We report the synthesis of powder and single-crystal samples of the cerium pyrohafnate and their characterization using neutron diffraction, thermogravimetry and X-ray absorption spectroscopy. We evaluate the amount of non-magnetic Ce$^{4+}$ defects
Externí odkaz:
http://arxiv.org/abs/2203.16295
Autor:
Petit Sylvain, Guitteny Solène, Robert Julien, Bonville Pierre, Decorse Claudia, Ollivier Jacques, Mutka Hannu, Mirebeau Isabelle
Publikováno v:
EPJ Web of Conferences, Vol 83, p 03012 (2015)
This paper aims at showing the complementarity between time-of-flight and triple-axis neutron scattering experiments, on the basis of two topical examples in the field of geometrical magnetic frustration. Rare earth pyrochlore magnets R2Ti2O7 (R is a
Externí odkaz:
https://doaj.org/article/5bca83e43dbe445eac8bdb46bfca57d6
Solitonic excitations in the Ising anisotropic chain BaCo2V2O8 under large transverse magnetic field
Autor:
Faure, Quentin, Takayoshi, Shintaro, Grenier, Béatrice, Petit, Sylvain, Raymond, Stéphane, Boehm, Martin, Lejay, Pascal, Giamarchi, Thierry, Simonet, Virginie
We study the dynamics of the quasi-one-dimensional Ising-Heisenberg antiferromagnet BaCo2V2O8 under a transverse magnetic field. Combining inelastic neutron scattering experiments and theoretical analyses by field theories and numerical simulations,
Externí odkaz:
http://arxiv.org/abs/2107.02487
Autor:
Gauthier, Nicolas, Porée, Victor, Petit, Sylvain, Pomjakushin, Vladimir, Lhotel, Elsa, Fennell, Tom, Sibille, Romain
Publikováno v:
Swiss Neutron News 56, 6-19 (2020)
Neutron scattering is a powerful tool to study magnetic structures and dynamics, benefiting from a precisely established theoretical framework. The neutron dipole moment interacts with electrons in materials via their magnetic field, which can have s
Externí odkaz:
http://arxiv.org/abs/2011.10418