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  Quantum nonlinear phononics route towards nonequilibrium materials engineering: Melting dynamics of a ferrielectric charge density wave

Puviani, M., & Sentef, M. A. (2018). Quantum nonlinear phononics route towards nonequilibrium materials engineering: Melting dynamics of a ferrielectric charge density wave. Physical Review B, 98(16): 165138. doi:10.1103/PhysRevB.98.165138.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0001-9911-F Version Permalink: https://hdl.handle.net/21.11116/0000-0006-D3C4-E
Genre: Journal Article

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PhysRevB.98.165138.pdf (Publisher version), 2MB
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 Creators:
Puviani, M.1, Author
Sentef, M. A.2, Author           
Affiliations:
1Dipartimento di Scienze Fisiche, Informatiche e Matematiche, Universit`a di Modena e Reggio Emili, ou_persistent22              
2Theoretical Description of Pump-Probe Spectroscopies in Solids, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_3012828              

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 Abstract: Negative nonlinear electron-phonon coupling involving an infrared-active phonon mode can lead to an instability towards the formation of a polar lattice distortion with ferrielectric (FE) moments accompanied by an electronic charge-density wave (CDW). Analyzing a small model system in and out of thermal equilibrium, we investigate the FE-CDW and its melting dynamics following an ultrashort laser pulse that drives the ionic dipoles. We observe nonequilibrium coherent phonon amplitude mode oscillations that soften towards the transition to the normal phase. Our case study serves as a first step towards a microscopic understanding of quantum nonlinear phononics as a basis for nonequilibrium control in quantum materials.

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Language(s): eng - English
 Dates: 2018-10-102018-06-212018-10-102018-10-262018-10-26
 Publication Status: Issued
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 Rev. Type: Peer
 Identifiers: arXiv: 1806.08187
DOI: 10.1103/PhysRevB.98.165138
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Project name : Discussions with A. Cavalleri, M. Fechner, and D. Kennes are gratefully acknowledged. M.A.S. acknowledges financial support by the DFG through the Emmy Noether programme (SE 2558/2-1).
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Title: Physical Review B
  Abbreviation : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 98 (16) Sequence Number: 165138 Start / End Page: - Identifier: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008