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Journal Article

Nonlinear Electron-Phonon Coupling in Doped Manganites

MPS-Authors
/persons/resource/persons202406

Fechner,  M.
Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Materials Theory, ETH Zürich, Wolfgang-Pauli-Strasse 27, 8093 Zürich, Switzerland;

/persons/resource/persons133845

Mankowsky,  R.
Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free Electron Laser Science, 22761 Hamburg, Germany;

/persons/resource/persons133775

Först,  M.
Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free Electron Laser Science, 22761 Hamburg, Germany;

Fulltext (public)

PhysRevLett.118.247601.pdf
(Publisher version), 399KB

Supplementary Material (public)

PCMOmidIR_PRL_v3_suppl.pdf
(Supplementary material), 4MB

Citation

Esposito, V., Fechner, M., Mankowsky, R., Lemke, H., Chollet, M., Glownia, J., et al. (2017). Nonlinear Electron-Phonon Coupling in Doped Manganites. Physical Review Letters, 118(24), 247601. doi:10.1103/PhysRevLett.118.247601.


Cite as: http://hdl.handle.net/21.11116/0000-0000-18F0-6
Abstract
We employ time-resolved resonant x-ray diffraction to study the melting of charge order and the associated insulator-to-metal transition in the doped manganite Pr0.5Ca0.5MnO3 after resonant excitation of a high-frequency infrared-active lattice mode. We find that the charge order reduces promptly and highly nonlinearly as function of excitation fluence. Density-functional theory calculations suggest that direct anharmonic coupling between the excited lattice mode and the electronic structure drives these dynamics, highlighting a new avenue of nonlinear phonon control.