301 citations · 1k across the 10 of their papers we have counts for
7 papers
Direct imaging of the structural domains in iron pnictides AFe2As2 (A = Ca, Sr, Ba)
M. A. Tanatar, A. Kreyssig, S. Nandi +5
The parent compounds of recently discovered iron-arsenide superconductors, FeAs with alkaline earth =Ca, Sr, Ba, undergo simultaneous structural and magnetic phase tr…
Probing fractal magnetic domains on multiple length scales in Nd2Fe14B
A. Kreyssig, R. Prozorov, C. D. Dewhurst +3
Using small-angle neutron scattering, we demonstrate that the complex magnetic domain patterns at the surface of Nd2Fe14B, revealed by quantitative Kerr and Faraday microscopy, pro…
Itinerant magnetic excitations in antiferromagnetic CaFe2As2
S. O. Diallo, V. P. Antropov, T. G. Perring +8
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 o…
Lattice collapse and quenching of magnetism in CaFe2As2 under pressure: A single crystal neutron and x-ray diffraction investigation
A. I. Goldman, A. Kreyssig, K. Prokes +15
Single crystal neutron and high-energy x-ray diffraction have identified the phase lines corresponding to transitions between the ambient-pressure tetragonal (T), the antiferromagn…
First order structural phase transition in CaFeAs
N. Ni, S. Nandi, A. Kreyssig +4
CaFeAs has been synthesized and found to form in the tetragonal, ThCrSi structure with lattice parameters and . Upon cooling thr…
Colossal Positive Magnetoresistance in a Doped Nearly Magnetic Semiconductor
Rongwei Hu, K. J. Thomas, Y. Lee +9
We report on a positive colossal magnetoresistance (MR) induced by metallization of FeSb, a nearly magnetic or "Kondo" semiconductor with 3d ions. We discuss contribution of…