TY  - JOUR
AU  - Qureshi, N.
AU  - Lee, C. H.
AU  - Kihou, K.
AU  - Schmalzl, K.
AU  - Steffens, P.
AU  - Braden, M.
TI  - Anisotropy of incommensurate magnetic excitations in slightly overdoped ${\mathrm{Ba}}_{0.5}{\mathrm{K}}_{0.5}{\mathrm{Fe}}_{2}{\mathrm{As}}_{2}$ probed by polarized inelastic neutron scattering experiments
JO  - Physical review / B
VL  - 90
IS  - 10
SN  - 1098-0121
CY  - College Park, Md.
PB  - APS
M1  - FZJ-2014-05498
SP  - 100502
PY  - 2014
AB  - Polarized neutron scattering experiments on the slightly overdoped superconductor Ba0.5K0.5Fe2As2 reveal broad magnetic resonance scattering peaking at approximately 15 meV. In spite of doping far beyond the suppression of magnetic order, this compound exhibits dispersive and anisotropic magnetic excitations. At energies below the resonance maximum, magnetic correlations polarized parallel to the layers but perpendicular to the propagation vector are reduced by a factor of 2 compared to those in the two orthogonal directions; in contrast, correlations at the peak maximum are isotropic
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000341262200003
DO  - DOI:10.1103/PhysRevB.90.100502
UR  - https://juser.fz-juelich.de/record/171944
ER  -