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Spin/Orbital Pattern-Dependent Polaron Absorption in Nd(1-x)Sr(x)MnO3

M. W. Kim·J. H. Jung·K. H. Kim·H. J. Lee·Jaejun Yu·T. W. Noh·Y. Moritomo
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Abstract

We investigated optical properties of Nd(1-x)Sr(x)MnO3 (x= 0.40, 0.50, 0.55, and 0.65) single crystals. In the spin/orbital disordered state, their conductivity spectra look quite similar, and the strength of the mid-infrared absorption peak is proportional to x(1-x) consistent with the polaron picture. As temperature lowers, the Nd(1-x)Sr(x)MnO3 samples enter into various spin/orbital ordered states, whose optical responses are quite different. These optical responses can be explained by the spin/orbital ordering pattern-dependent polaron hopping.

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M. W. Kim, J. H. Jung, K. H. Kim, H. J. Lee, Jaejun Yu, T. W. Noh, Y. Moritomo. 2002-03-09. Spin/Orbital Pattern-Dependent Polaron Absorption in Nd(1-x)Sr(x)MnO3. https://doi.org/10.1103/physrevlett.89.016403

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