Ontology highlight
ABSTRACT:
SUBMITTER: Zhang C
PROVIDER: S-EPMC3239165 | biostudies-literature | 2011
REPOSITORIES: biostudies-literature
Zhang Chenglin C Wang Meng M Luo Huiqian H Wang Miaoyin M Liu Mengshu M Zhao Jun J Abernathy D L DL Maier T A TA Marty Karol K Lumsden M D MD Chi Songxue S Chang Sung S Rodriguez-Rivera Jose A JA Lynn J W JW Xiang Tao T Hu Jiangping J Dai Pengcheng P
Scientific reports 20111019
We report inelastic neutron scattering experiments on single crystals of superconducting Ba(0.67)K(0.33)Fe(2)As(2) (T(c) = 38 K). In addition to confirming the resonance previously found in powder samples, we find that spin excitations in the normal state form longitudinally elongated ellipses along the Q(AFM) direction in momentum space, consistent with density functional theory predictions. On cooling below T(c), while the resonance preserves its momentum anisotropy as expected, spin excitatio ...[more]