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Quasi-one-dimensional magnons in an intermetallic marcasite
M. B. Stone, M. D. Lumsden, S. E. Nagler +4
We present inelastic neutron scattering measurements and first principles calculations examining the intermetallic marcasite CrSb2. The observed spin wave dispersion implies that t…
Electronic correlations and unconventional spectral weight transfer in BaFeCoAs
A. A. Schafgans, S. J. Moon, B. C. Pursley +7
We report an infrared optical study of the pnictide high-temperature superconductor BaFeCoAs and its parent compound BaFeAs. We demonstrate that…
Spatial Inhomogeneity in RFeAsO1-xFx (R =Pr, Nd) Determined from Rare Earth Crystal Field Excitations
E. A. Goremychkin, R. Osborn, C. H. Wang +8
We report inelastic neutron scattering measurements of crystal field transitions in PrFeAsO, PrFeAsO0.87F0.13, and NdFeAsO0.85F0.15. Doping with fluorine produces additional crysta…
Structural and Magnetic Phase Transitions in NdCoAsO under High Pressures
Walter Uhoya, Georgiy M. Tsoi, Yogesh K. Vohra +5
We have investigated structural and magnetic phase transitions under high pressures in a quaternary rare earth transition metal arsenide oxide NdCoAsO compound that is isostructura…
Pressure effects on the transport coefficients of Ba(Fe1-xCox)2As2
S. Arsenijević, R. Gaál, A. S. Sefat +4
We report the temperature dependence of the resistivity and thermoelectric power under hydrostatic pressure of the itinerant antiferromagnet BaFe2As2 and the electron-doped superco…
Kinetically Inhibited Order in a Diamond-Lattice Antiferromagnet
G. J. MacDougall, D. Gout, J. L. Zarestky +5
Frustrated magnetic systems exhibit highly degenerate ground states and strong fluctuations, often leading to new physics. An intriguing example of current interest is the antiferr…