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Magnetic and structural transitions in LaNaFeAs single crystals
J. -Q. Yan, S. Nandi, B. Saparov +10
LaNaFeAs single crystals have been grown out of an NaAs flux in an alumina crucible and characterized by measuring magnetic susceptibility, electrical resis…
Neutron-scattering measurements of the spin excitations in LaFeAsO and Ba(FeCo)As: Evidence for a sharp enhancement of spin fluctuations by nematic order
Qiang Zhang, Rafael M. Fernandes, Jagat Lamsal +11
Inelastic neutron scattering was employed to investigate the impact of electronic nematic order on the magnetic spectra of LaFeAsO and Ba(FeCo)As. T…
Correlating Quasi-Electron Relaxation with Quantum Femtosecond Magnetism in the Order Parameter Dynamics of Insulating Manganites
T. Li, A. Patz, P. Lingos +5
Femtosecond (fs)-resolved simultaneous measurements of charge and spin dynamics reveal the coexistence of two different quasi-particle excitations in colossal magneto-resistive (CM…
Anisotropic magnetoelastic coupling in single-crystalline CeFeAsO as seen via high-resolution x-ray diffraction
H. -F. Li, J. -Q. Yan, J. W. Kim +3
Single-crystal synchrotron x-ray diffraction studies of CeFeAsO reveal strong anisotropy in the charge correlation lengths along or perpendicular to the in-plane antiferromagnetic…
Disorder from order among anisotropic next-nearest-neighbor Ising spin chains in SrHoO
J. -J. Wen, W. Tian, V. O. Garlea +7
We describe why Ising spin chains with competing interactions in segregate into ordered and disordered ensembles at low temperatures (). Using elastic neutron sc…
High Mobility WSe2 p- and n-Type Field Effect Transistors Contacted by Highly Doped Graphene for Low-Resistance Contacts
Hsun-Jen Chuang, Xuebin Tan, Nirmal Jeevi Ghimire +7
We report the fabrication of both n-type and p-type WSe2 field effect transistors with hexagonal boron nitride passivated channels and ionic-liquid (IL)-gated graphene contacts. Ou…