Magnonlike dispersion of spin resonance in Ni-doped BaFe₂As₂

M. G. Kim , G. S. Tucker , D. K. Pratt , S. Ran , A. Thaler , A. D. Christianson , K. Marty , A. Podlesnyak

show 5 more authors

S. L. Bud'ko P. C. Canfield A. Kreyssig A. I. Goldman R. J. McQueeney

Authors on Pith no claims yet

classification ❄️ cond-mat.supr-con cond-mat.str-el

keywords resonancedispersionspinalongaxisbafeneutronsuperconducting

0 comments

read the original abstract

Inelastic neutron scattering measurements on Ba(Fe$_{0.963}$Ni$_{0.037}$)$_2$As$_2$ manifest a neutron spin resonance in the superconducting state with anisotropic dispersion within the Fe layer. Whereas the resonance is sharply peaked at Q$_{AFM}$ along the orthorhombic a axis, the resonance disperses upwards away from Q$_{AFM}$ along the b axis. In contrast to the downward dispersing resonance and hour-glass shape of the spin excitations in superconducting cuprates, the resonance in electron-doped BaFe$_2$As$_2$ compounds possesses a magnon-like upwards dispersion.

This paper has not been read by Pith yet.

Magnonlike dispersion of spin resonance in Ni-doped BaFe₂As₂

discussion (0)