Ultrafast strain engineering in complex oxide heterostructures

Details Ultrafast strain engineering in complex oxide heterostructures Ultrafast strain engineering in complex oxide heterostructures

2011-11-14

arxiv.org/abs/1111.3155v1

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

We report on ultrafast optical experiments in which femtosecond mid-infrared radiation is used to excite the lattice of complex oxide heterostructures. By tuning the excitation energy to a vibrational mode of the substrate, a long-lived five-order-of-magnitude increase of the electrical conductivity of NdNiO3 epitaxial thin films is observed as a structural distortion propagates across the interface. Vibrational excitation, extended here to a wide class of heterostructures and interfaces, may be conducive to new strategies for electronic phase control at THz repetition rates.

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