Resonant Enhancements at Nonmagnetic Ions: New Possibilities for Magnetic X-Ray Scattering

Autor:	D. Mannix, C. Vettier, N. Bernhoeft, Dariusz Kaczorowski, A. Stunault, F. de Bergevin, G. H. Lander, A. Czopnik, Luigi Paolasini
Rok vydání:	2001
Předmět:	Physics Scattering General Physics and Astronomy Position and momentum space Polarization (waves) Synchrotron Ion law.invention Dipole law Antiferromagnetism Condensed Matter::Strongly Correlated Electrons Wave vector Atomic physics
Zdroj:	Physical Review Letters. 86:4128-4131
ISSN:	1079-7114 0031-9007
DOI:	10.1103/physrevlett.86.4128
Popis:	Synchrotron experiments with uranium antiferromagnetic compounds have discovered large ( >1000) enhancements of the magnetic scattering intensities at the K edges of nominally nonmagnetic anions, e.g., Ga and As. The width in energy, the position with respect to the white line, and the azimuthal and polarization dependencies permit one to associate the signal with transitions of E1 dipole symmetry from 1s to 4p states. In momentum space, the signal exhibits long-range order at the antiferromagnetic wave vector. We discuss possible channels capable of generating the observed enhancements.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9b4cb0efec22e098c1aff5711b5c9a6f https://doi.org/10.1103/physrevlett.86.4128 Zobrazit plný text záznamu