Zobrazeno 1 - 10
of 91
pro vyhledávání: '"Ballou, Rafik"'
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:
Grenet, Thierry, Ballou, Rafik, Basto, Quentin, Martineau, Killian, Perrier, Pierre, Pugnat, Pierre, Quevillon, Jérémie, Roch, Nicolas, Smith, Christopher
In this note we report on the development plans and first results of the Grenoble Axion Haloscope (GrAHal) project. It is aimed at developing a haloscope platform dedicated to the search for axion dark matter particles. We discuss its general framewo
Externí odkaz:
http://arxiv.org/abs/2110.14406
Autor:
Godfrin, Clément, Ballou, Rafik, Bonet, Edgar, Ruben, Mario, Klyatskaya, Svetlana, Wernsdorfer, Wolfgang, Balestro, Franck
Publikováno v:
npj Quantum Information (2018) 4:53
Qudits, with their state space of dimension d > 2, open fascinating experimental prospects. The quantum properties of their states provide new potentialities for quantum information, quantum contextuality, expressions of geometric phases, facets of q
Externí odkaz:
http://arxiv.org/abs/1810.10367
Autor:
Godfrin, Clément, Ferhat, Abdelkarim, Ballou, Rafik, Klyatskaya, Svetlana, Ruben, Mario, Wernsdorfer, Wolfgang, Balestro, Franck
Publikováno v:
Phys. Rev. Lett. 119, 187702 (2017)
Quantum algorithms use the principles of quantum mechanics, as for example quantum superposition, in order to solve particular problems outperforming standard computation. They are developed for cryptography, searching, optimisation, simulation and s
Externí odkaz:
http://arxiv.org/abs/1710.11229
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Autor:
Chaix, Laura, Ballou, Rafik, Cano, Andres, Petit, Sylvain, De Brion, Sophie, Ollivier, Jacques, Regnault, Louis-Pierre, Ressouche, Eric, Constable, Evan, Colin, Claire, Zorko, A., Scagnoli, Valerio, Balay, Joël, Lejay, Pascal, Simonet, Virginie
The chiral Fe-based langasites represent model systems of triangle-based frustrated magnets with a strong potential for multiferroicity. We report neutron scattering measurements for the multichiral Ba3MFe3Si2O14 (M = Nb, Ta) langasites revealing new
Externí odkaz:
http://arxiv.org/abs/1506.06491
Autor:
Lefrançois, Emilie, Chapon, Laurent C., Simonet, Virginie, Lejay, Pascal, Khalyavin, Dmitry, Rayaprol, Sudhindra, Sampathkumaran, E. V., Ballou, Rafik, Adroja, D. T.
We have studied the field and temperature dependence of the magnetization of single crystals of Sr3NiIrO6. These measurements evidence the presence of an easy axis of anisotropy and two anomalies in the magnetic susceptibility. Neutron powder diffrac
Externí odkaz:
http://arxiv.org/abs/1403.4815
Autor:
Chaix, Laura, De Brion, Sophie, Petit, Sylvain, Ballou, Rafik, Regnault, Louis-Pierre, Ollivier, Jacques, Brubach, Jean-Blaise, Roy, Pascale, Debray, Jérôme, Lejay, Pascal, Cano, Andres, Ressouche, Eric, Simonet, Virginie
Publikováno v:
Physical Review Letters 112, 13 (2014) 137201
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 spectroscopies on synchrotron source. From these complementary techniques, we
Externí odkaz:
http://arxiv.org/abs/1402.7018
Autor:
Chaix, Laura, De Brion, Sophie, Levy-Bertrand, Florence, Simonet, Virginie, Ballou, Rafik, Canals, Benjamin, Lejay, Pascal, Brubach, Jean-Blaise, Greff, Gaëlle, Willaert, Fabrice, Roy, Pascale, Cano, Andres
Publikováno v:
Physical Review Letters (2013) PRL 110, 157208 (2013)
We have determined the terahertz spectrum of the chiral langasite Ba$_3$NbFe$_3$Si$_2$O$_{14}$ by means of synchrotron-radiation measurements. Two excitations are revealed that are shown to have a different nature. The first one, purely magnetic, is
Externí odkaz:
http://arxiv.org/abs/1303.1706
Publikováno v:
European Physical Journal - Special Topics 213 (2012) 5
We review the concept of chirality, at first briefly in a general context then in the specific framework of the spin networks. We next discuss to what extent neutron scattering appears as an unconvertible tool to probe magnetic chirality in the stati
Externí odkaz:
http://arxiv.org/abs/1301.1616