Campus Units

Physics and Astronomy, Ames Laboratory

Document Type

Article

Publication Version

Published Version

Publication Date

4-26-2013

Journal or Book Title

Physical Review Letters

Volume

110

Issue

17

First Page

177002

DOI

10.1103/PhysRevLett.110.177002

Abstract

Inelastic neutron scattering measurements on Ba(Fe0.963Ni0.037)2As2 manifest a neutron spin resonance in the superconducting state with anisotropic dispersion within the Fe layer. Whereas the resonance is sharply peaked at the antiferromagnetic (AFM) wave vector QAFM along the orthorhombic a axis, the resonance disperses upwards away from QAFM along the b axis. In contrast to the downward dispersing resonance and hourglass shape of the spin excitations in superconducting cuprates, the resonance in electron-doped BaFe2As2 compounds possesses a magnonlike upwards dispersion.

Comments

This article is published as Kim, M. G., G. S. Tucker, D. K. Pratt, S. Ran, A. Thaler, Andrew D. Christianson, K. Marty, S. Calder, A. Podlesnyak, S. L. Bud’ko, P. C. Canfield, A. Kreyssig, A. I. Goldman, and R. J. McQueeney. "Magnonlike Dispersion of Spin Resonance in Ni-doped Ba Fe 2 As 2." Physical Review Letters 110, no. 17 (2013): 177002. DOI: 10.1103/PhysRevLett.110.177002. Posted with permission.

Copyright Owner

American Physical Society

Language

en

File Format

application/pdf

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