116 citations · 377 across the 11 of their papers we have counts for
11 papers
Field induced magnetic order in the frustrated magnet Gadolinium Gallium Garnet
O. A. Petrenko, G. Balakrishnan, D. McK Paul +3
Gd3Ga5O12, (GGG), has an extraordinary magnetic phase diagram, where no long range order is found down to 25 mK despite Θ_CW \approx 2 K. However, long range order is induced by an…
Anisotropic three-dimensional magnetism in CaFe2As2
R. J. McQueeney, S. O. Diallo, V. P. Antropov +12
Inelastic neutron scattering measurements on the low energy spin waves in CaFe2As2 show that the magnetic exchange interactions in the Fe layers are exceptionally large and similar…
Zener double exchange from local valence fluctuations in magnetite
R. J. McQueeney, M. Yethiraj, S. Chang +4
Magnetite (FeO) is a mixed valent system where electronic conductivity occurs on the B-site (octahedral) iron sublattice of the spinel structure. Below K, a…
The ground state of a quantum critical system
Wouter Montfrooij, Jagat Lamsal, Meigan Aronson +7
The competition between the tendency of magnetic moments to order at low temperatures, and the tendency of conduction electrons to shield these moments, can result in a phase trans…
Investigation of the presence of charge order in magnetite by measurement of the spin wave spectrum
R. J. McQueeney, M. Yethiraj, W. Montfrooij +3
Inelastic neutron scattering results on magnetite (Fe3O4) show a large splitting in the acoustic spin wave branch, producing a 7 meV gap midway to the Brillouin zone boundary at q…
The Role of Grain Boundaries in Determining the Transport Properties in Magnetite
David C. Mertens, W. Montfrooij, R. J. McQueeney +2
We present magnetoresistance and Hall-effect measurements on single crystal magnetite Fe3O4 close to the Verwey transition Tv = 123.8 K. We show that the formation of grain boundar…