Zobrazeno 1 - 10
of 111
pro vyhledávání: '"Lhotel, Elsa"'
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:
Alexanian, Yann, Robert, Julien, Simonet, Virginie, Langérôme, Benjamin, Brubach, Jean-Blaise, Roy, Pascale, Decorse, Claudia, Lhotel, Elsa, Constable, Evan, Ballou, Rafik, De Brion, Sophie
While the spin liquid state in the frustrated pyrochlore Tb$_{2+x}$Ti$_{2-x}$O$_{7+y}$ has been studied both experimentally and theoretically for more than two decades, no definite description of this unconventional state has been achieved. Using syn
Externí odkaz:
http://arxiv.org/abs/2207.10036
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:
Jacobsen, Henrik, Florea, Ovidiu, Lhotel, Elsa, Lefmann, Kim, Petrenko, Oleg, Knee, Chris S., Seydel, Tilo, Henry, Paul F., Bewley, Robert, Voneshen, David, Wildes, Andrew, Nilsen, Gøran, Deen, Pascale P.
Publikováno v:
Phys. Rev. B 104, 054440 (2021)
We present an experimental study of the magnetic structure and dynamics of two frustrated hyperkagome compounds, Gd3Ga5O12 and Gd3Al5O12. It has previously been shown that Gd3Ga5O12 exhibits long-range correlations of multipolar directors, that are f
Externí odkaz:
http://arxiv.org/abs/2104.05987
Autor:
Bulled, Johnathan M., Paddison, Joseph A. M., Wildes, Andrew, Lhotel, Elsa, Cassidy, Simon J., Pato-Doldan, Breogan, Gomez-Aguirre, L. Claudia, Saines, Paul J., Goodwin, Andrew L.
In the dense metal-organic framework Na[Mn(HCOO)$_3$], Mn$^{2+}$ ions ($S=\frac{5}{2}$) occupy the nodes of a `trillium' hyperkagome net. We show that this material exhibits a variety of behaviour characteristic of geometric frustration: the N\'eel t
Externí odkaz:
http://arxiv.org/abs/2012.10361
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
Autor:
Sibille, Romain, Gauthier, Nicolas, Lhotel, Elsa, Porée, Victor, Pomjakushin, Vladimir, Ewings, Russell A., Perring, Toby G., Ollivier, Jacques, Wildes, Andrew, Ritter, Clemens, Hansen, Thomas C., Keen, David A., Nilsen, Gøran J., Keller, Lukas, Petit, Sylvain, Fennell, Tom
Publikováno v:
Nature Physics (2020)
Spin liquids are highly correlated yet disordered states formed by the entanglement of magnetic dipoles$^1$. Theories typically define such states using gauge fields and deconfined quasiparticle excitations that emerge from a simple rule governing th
Externí odkaz:
http://arxiv.org/abs/1912.00928