Theory of photoinduced ultrafast switching to a spin-orbital ordered hidden phase
- Li, Jiajun Department of Physics, University Erlangen-Nürnberg, Erlangen, Germany
- Strand, Hugo U. R. Center for Computational Quantum Physics, Flatiron Institute, New York, USA - Department of Quantum Matter Physics, University of Geneva, Switzerland. - Department of Physics, University of Fribourg, Switzerland
- Werner, Philipp Department of Physics, University of Fribourg, Switzerland
- Eckstein, Martin Department of Physics, University Erlangen-Nürnberg, Erlangen, Germany
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02.11.2018
Published in:
- Nature Communications. - 2018, vol. 9, no. 1, p. 4581
English
Photo-induced hidden phases are often observed in materials with intertwined orders. Understanding the formation of these non-thermal phases is challenging and requires a resolution of the cooperative interplay between different orders on the ultra-short timescale. In this work, we demonstrate that non-equilibrium photo-excitations can induce a state with spin-orbital orders entirely different from the equilibrium state in the three-quarter-filled two-band Hubbard model. We identify a general mechanism governing the transition to the hidden state, which relies on a non-thermal partial melting of the intertwined orders mediated by photoinduced charge excitations in the presence of strong spin-orbital exchange interactions. Our study theoretically confirms the crucial role played by orbital degrees of freedom in the light-induced dynamics of strongly correlated materials and it shows that the switching to hidden states can be controlled already on the fs timescale of the electron dynamics.
- Faculty
- Faculté des sciences et de médecine
- Department
- Département de Physique
- Language
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- English
- Classification
- Physics
- License
- License undefined
- Identifiers
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- RERO DOC 323889
- DOI 10.1038/s41467-018-07051-x
- Persistent URL
- https://folia.unifr.ch/unifr/documents/307515
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