Ultrafast Strain Engineering in Complex Oxide Heterostructures

Caviglia, Andrea D.; Scherwitzl, R.; Popovich, Paul; Hu, Wanzheng; Bromberger, Hubertus; Singla, Rashmi; Mitrano, Matteo; Hoffmann, Matthias C.; Kaiser, Stefan; Zubko, P.; Gariglio, S.; Triscone, J.-M.; Först, Michael; Cavalleri, Andrea

doi:10.1103/PhysRevLett.108.136801

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Ultrafast Strain Engineering in Complex Oxide Heterostructures

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http://dx.doi.org/10.1103/PhysRevLett.108.136801
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http://arxiv.org/abs/1111.3155
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PhysRevLett.108.136801.pdf
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Citation

Caviglia, A. D., Scherwitzl, R., Popovich, P., Hu, W., Bromberger, H., Singla, R., et al. (2012). Ultrafast Strain Engineering in Complex Oxide Heterostructures. Physical Review Letters, 108(13): 136801. doi:10.1103/PhysRevLett.108.136801.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0028-1A77-6

Abstract

We report on ultrafast optical experiments in which femtosecond midinfrared 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.