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Low Energy Electronic Excitations in the Layered Cuprates Studied by Copper L3 Resonant Inelastic X-Ray Scattering (Articolo in rivista)

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Low Energy Electronic Excitations in the Layered Cuprates Studied by Copper L3 Resonant Inelastic X-Ray Scattering (Articolo in rivista) (literal)

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Alternative label

Ghiringhelli, G.; Brookes, N. B.; Annese, E.; Berger, H. ; Dallera, C.; Grioni, M.; Perfetti, L.; Tagliaferri, A.; Braicovich, L. (2004)
Low Energy Electronic Excitations in the Layered Cuprates Studied by Copper L3 Resonant Inelastic X-Ray Scattering
in Physical review letters; American Physical Society (APS), College Pk (Stati Uniti d'America)
(literal)

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Ghiringhelli, G.; Brookes, N. B.; Annese, E.; Berger, H. ; Dallera, C.; Grioni, M.; Perfetti, L.; Tagliaferri, A.; Braicovich, L. (literal)

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INFM-Dipartimento di Fisica, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy European Synchrotron Radiation Facility, B.P. 220, 38043 Grenoble Ce´dex, France INFM-Dipartimento di Fisica, Universita` di Modena e Reggio Emilia, via Campi 213/A, 41100 Modena, Italy IPN, Ecole Polytechnique Fe´de´rale (EPFL), CH-1015 Lausanne, Switzerland Ecole Polytechnique Fe´de´rale (EPFL), CH-1015 Lausanne, Switzerland (literal)

Titolo

Low Energy Electronic Excitations in the Layered Cuprates Studied by Copper L3 Resonant Inelastic X-Ray Scattering (literal)

Abstract

We have measured the resonant inelastic x-ray scattering (RIXS) spectra at the Cu L3 edge in a variety of cuprates. Exploiting a considerably improved energy resolution (0.8 eV) we recorded significant dependencies on the sample composition and orientation, on the scattering geometry, and on the incident photon polarization. The RIXS final states correspond to two families of electronic excitations, having local (dd excitations) and nonlocal (charge-transfer) character. The dd energy splitting can be estimated with a simple crystal field model. The RIXS at the L3 edge demonstrates here a great potential, thanks to the resonance strength and to the large 2p spin-orbit splitting. (literal)

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