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Spin Wave Dispersion in BaFe2As2
Understanding the magnetic exchange coupling and fundamental Hamiltonian of the parent compound of FeAs-based superconductors is extremely important, because such information... -
Paramagnetic excitations in BaFe2As2 at high temperature
One fundamental issue in the iron-based superconductors is whether the conventional local moment Heisenberg model is sufficient to describe magnetism in these materials, or... -
Probe spin excitations in heavily overdoped BaFe2-xNixAs2
Spin excitations is correlated with superconductivity in high Tc superconductors. The spin excitations in La2-xSrxCuO4 superconductors become weaker in overdoped region and... -
High Temperature study of BaFe2As2
Recent unpublished data collected at MAPS by our group revealed that the spin wave dispersion of the Ba(122) parent differ significantly from Ca(122). In Ba(122) there is a... -
Explore the spectrum of spin excitations in non-superconducting BaFe1.8Ni0.1C...
Recently, our neutron scattering experiments on electron doped BaFe2-xNixAs2 and hole doped Ba1-xKxFe2As2 suggest that the presence of both high-energy spin excitations giving... -
Probing the temperature dependence of magnetism in Ba0.67K0.33Fe2As2
We propose to study the temperature evolution of magnetic excitations in optimal doped Ba0.67K0.33Fe2As2, this work will complement our earlier work on the samples at base...