Now showing items 1-4 of 4
Itinerant magnetic excitations in antiferromagnetic CaFe2As2
(American Physical Society, 2009-05-08)
Neutron scattering measurements of the magnetic excitations in single crystals of antiferromagnetic CaFe2As2 reveal steeply dispersive and well-defined spin waves up to an energy of ~100 meV. Magnetic excitations above 100 ...
Coupled Magnetic and Ferroelectric Domains in Multiferroic Ni3V2O8
(American Physical Society, 2009-08-21)
Electric control of multi-ferroic domains is demonstrated through polarized magnetic neutron diffraction. Cooling to the cycloidal multi-ferroic phase of Ni3V2O8 in an electric field E causes the incommensurate Bragg ...
Spin-lattice order in frustrated ZnCr2O4
(American Physical Society, 2009-07-17)
Using synchrotron x-ray and neutron diffraction, we disentangle spin-lattice order in highly frustrated ZnCr2O4 where magnetic chromium ions occupy the vertices of regular tetrahedra. Upon cooling below 12.5 K the quandary ...
Spin gap and resonance at the nesting wave vector in superconducting FeSe0.4Te0.6
(American Physical Society, 2009-08-07)
Neutron scattering is used to probe magnetic excitations in FeSe0.4Te0.6 (Tc = 14 K). Low energy spin fluctuations are found with a characteristic wave vector (1212L) that corresponds to Fermi surface nesting and differs ...