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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Recent unpublished data collected at MAPS by our group revealed that the spin wave dispersion of the Ba(122) parent differ significantly from Ca(122).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... -
Inelastic neutron study to investigate the crystal electronic field of rare-e...
With the degenerate ground states by the competition between the interacting energies and geometrical properties of the crystal lattice at a specific given site, the... -
Inelastic magnetic excitations in NaFe0.95Co0.05As (Tc~17 K)
Though NaFeAs shares the same crystallographic structure with LiFeAs, there are many different aspects between them. We would like to compare the magnetic excitation in it with... -
Is magnetic frustration behind the tetragonal-to-orthorhombic transition in t...
It has been argued that the tetragonal-to-orthorhombic structural transition found in all the parent phases of the Fe-pnictide superconductors is driven by frustration, and... -
Magnetic Excitations in 50% Cu substituted BaFe2-xCuxAs2
We find unusual antiferromagnetic order in Cu heavily overdoped BaFeCuAs2 with the order wave vector at (0.5 0.5 1). This anitiferromagnetic signal cannot come from the parent... -
Magnetic Excitations in 50% Cu substituted BaFe2-xCuxAs2
We find unusual antiferromagnetic order in Cu heavily overdoped BaFeCuAs2 with the order wave vector at (0.5 0.5 1). This anitiferromagnetic signal cannot come from the parent... -
Spin excitations in LiFeAs, a stoichiometric ferropnictide superconductor at ...
We propose to measure the powder-averaged spin excitation spectrum of LiFeAs, a new member of the ferropnictide family of superconductors. This compound is special because it is... -
MAPS calibration
This dataset has no description
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Magnetic excitations of heavily electron overdoped BaFe0.8Ni1.2As2
We have devoted much efforts to investigating the doping evolution of the magnetic excitations in electron doped BaFe2-xNixAs2 (x=0-0.6). Spin excitations for x=0-0.6 have been... -
Temperature dependence of the high-energy spin excitations in the newly disco...
Understanding the magnetism in iron pnictides is one of the most important steps to reveal the mechanism of superconductivity in these novel materials. In the extensively... -
High energy spin excitations in SrCo2As2
the correlation degree in 122 iron pnictides mainly depends on the electronoccupancy of each orbital and that by doping electrons the correlation decreases monotonically. This... -
Spin Waves in Detwinned SrFe2As2
We propose to measure spin waves in detwinned SrFe2As2, combined with our data on detwinned BaFe2As2 this allows us to understand if magnetic excitations in the two systems can...
