Universität zu Köln

Qureshi, N., Lee, C. H., Kihou, K., Schmalzl, K., Steffens, P. and Braden, M. (2014). Anisotropy of incommensurate magnetic excitations in slightly overdoped Ba0.5K0.5Fe2As2 probed by polarized inelastic neutron scattering experiments. Phys. Rev. B, 90 (10). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1550-235X

Full text not available from this repository.

Abstract

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.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Qureshi, N. UNSPECIFIED UNSPECIFIED UNSPECIFIED Lee, C. H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kihou, K. UNSPECIFIED UNSPECIFIED UNSPECIFIED Schmalzl, K. UNSPECIFIED UNSPECIFIED UNSPECIFIED Steffens, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Braden, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-428969
DOI:	10.1103/PhysRevB.90.100502
Journal or Publication Title:	Phys. Rev. B
Volume:	90
Number:	10
Date:	2014
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	1550-235X
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SPIN EXCITATIONS; SUPERCONDUCTIVITY Multiple languages Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/42896