Concept
Spineur
Publications associées (149)
Lattice symmetries and regular magnetic orders in classical frustrated antiferromagnets
We consider some classical and frustrated lattice spin models with global O(3) spin symmetry. No general analytical method to find a ground state exists when the spin dependence of the Hamiltonian is more than quadratic (i.e., beyond the Heisenberg model) ...
2011Control of spin configuration in half-metallic La0.7Sr0.3MnO3 nano-structures
We investigate the interplay between the governing magnetic energy terms in patterned La0.7Sr0.3MnO3 (LSMO) elements by direct high-resolution x-ray magnetic microscopy as a function of temperature and geometrical parameters. We show that the magnetic conf ...
2011Heat-driven spin currents on large scales
Jean-Philippe Ansermet, Sylvain Bréchet
Using a three-current model (i.e. heat, spin-up and spin-down electrons) the thermodynamics of irreversible processes predicts that a temperature gradient gives rise to a spin current on large scales, in particular under the conditions used to measure the ...
Wiley-Blackwell2011Broadband inversion for MAS NMR with single-sideband-selective adiabatic pulses
David Lyndon Emsley, Philip John Grandinetti
We explain how and under which conditions it is possible to obtain an efficient inversion of an entire sideband family of several hundred kHz using low-power, sideband-selective adiabatic pulses, and we illustrate with some experimental results how this fr ...
AMER INST PHYSICS2011Multistability of a coherent spin ensemble in a semiconductor microcavity
Benoît Marie Joseph Deveaud, François Morier-Genoud, Taofiq Paraïso
Coherent manipulation of spin ensembles is a key issue in the development of spintronics. In particular, multivalued spin switching may lead to new schemes of logic gating and memories. This phenomenon has been studied with atom vapours 30 years ago, but i ...
2010