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Nuclear Magnetic Resonance as a probe of nanometre-size orbital textures in magnetic transition metal oxides

G. Papavassiliou·M. Pissas·M. Belesi·M. Fardis·D. Stamopoulos·A. Kontos·M. Hennion·J. Dolinsek·J. P. Ansermet·C. Dimitropoulos
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Abstract

The study of strong electron correlations in transition metal oxides with modern microscopy and diffraction techniques unveiled a fascinating world of nanosize textures in the spin, charge, and crystal structure. Examples range from high $T_c$ superconducting cuprates and nickelates, to hole doped manganites and cobaltites. However, in many cases the appearance of these textures is accompanied with "glassiness" and multiscale/multiphase effects, which complicate significantly their experimental verification. Here, we demonstrate how nuclear magnetic resonance may be uniquely used to probe nanosize orbital textures in magnetic transition metal oxides. As a convincing example we show for the first time the detection of nanoscale orbital phase separation in the ground state of the ferromagnetic insulator La$_{0.875}$Sr$_{0.125}$MnO$_3$.

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G. Papavassiliou, M. Pissas, M. Belesi, M. Fardis, D. Stamopoulos, A. Kontos, M. Hennion, J. Dolinsek, J. P. Ansermet, C. Dimitropoulos. 2004-12-14. Nuclear Magnetic Resonance as a probe of nanometre-size orbital textures in magnetic transition metal oxides. https://arxiv.org/abs/cond-mat/0412371

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