Abstract
Using time-resolved far-infrared spectroscopy, we observe multiple routes for photoinduced phase transitions in . This includes (i) a photothermal antiferromagnetic to paramagnetic transition and (ii) an incipient strain-generated paramagnetic metal to paramagnetic insulator transition, which manifests as coherent oscillations in the far-infrared conductivity. The conductivity oscillation results from coherent acoustic phonon modulation of the bandwidth . Our results indicate that poor metals are particularly amenable to coherent strain control of their electronic properties.
- Received 21 October 2010
DOI:https://doi.org/10.1103/PhysRevLett.107.066403
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