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11 December 2024

» arxiv » cond-mat/9710232

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X-Ray Resonant Scattering as a Direct Probe of Orbital Ordering in Transition-Metal Oxides
Michele Fabrizio ; Massimo Altarelli ; Maurizio Benfatto ;
Date:	22 Oct 1997
Subject:	Strongly Correlated Electrons; Materials Science \| cond-mat.str-el cond-mat.mtrl-sci
Abstract:	X-ray resonant scattering at the K-edge of transition metal oxides is shown to measure the orbital order parameter, supposed to accompany magnetic ordering in some cases. Virtual transitions to the 3d-orbitals are quadrupolar in general. In cases with no inversion symmetry, such as V$_2$O$_3$, treated in detail here, a dipole component enhances the resonance. Hence, we argue that the detailed structure of orbital order in V$_2$O$_3$ is experimentally accessible.
Source:	arXiv, cond-mat/9710232
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