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

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

2002-03-09

arxiv.org/abs/cond-mat/0203201v1

Physics

Condensed Matter

Strongly Correlated Electrons

3 figures (gzipped)

Scientific paper

10.1103/PhysRevLett.89.016403

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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