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Dispersion of magnetic excitations in the cuprate La2CuO4 and CaCuO2 compounds measured using resonant x-ray scattering.

Authors :
Braicovich L
Ament LJ
Bisogni V
Forte F
Aruta C
Balestrino G
Brookes NB
De Luca GM
Medaglia PG
Granozio FM
Radovic M
Salluzzo M
van den Brink J
Ghiringhelli G
Source :
Physical review letters [Phys Rev Lett] 2009 Apr 24; Vol. 102 (16), pp. 167401. Date of Electronic Publication: 2009 Apr 20.
Publication Year :
2009

Abstract

By resonant inelastic x-ray scattering in the soft x-ray regime we probe the dynamical multiple-spin correlations in the antiferromagnetic cuprates La2CuO4 and CaCuO2. High resolution measurements at the copper L3 edge allow the clear observation of dispersing bimagnon excitations. Theory based on the ultrashort core-hole lifetime expansion fits the data on these coherent spin excitations without free parameters.

Details

Language :
English
ISSN :
0031-9007
Volume :
102
Issue :
16
Database :
MEDLINE
Journal :
Physical review letters
Publication Type :
Academic Journal
Accession number :
19518752
Full Text :
https://doi.org/10.1103/PhysRevLett.102.167401