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High resolution study of permanent photoinduced reflectivity changes and charge-order domain switching in
I I Smolyaninov1, V N Smolyaninova, C C Davis
1Electrical and Computer Engineering Department, University of Maryland, College Park, MD 20742, USA.
Abstract:
We report near-field and far-field optical microscopic studies of photoinduced effects in charge-ordered Bi(0.3)Ca(0.7)MnO(3). Unlike previously reported transient photoinduced effects in manganites, we have observed permanent reflectivity changes following local sample illumination with 488 nm light. High-resolution images of exposed regions reveal optical contrast on a submicrometer scale. This observation indicates that photonic band-gap structures may be created using holographic recording in manganites. We also present images of photoinduced charge-order domain switching in Bi(0.3)Ca(0.7)MnO(3).