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- W4310921938 abstract "The electronic structure and the magnetic properties of iron-based superconductors are highly sensitive to the pnictogen height. Coherent excitation of the $A_{1g}$ phonon by femtosecond laser directly modulates the pnictogen height, which has been used to control the physical properties of iron-based superconductors. Previous studies show that the driven $A_{1g}$ phonon resulted in a transient increase of the pnictogen height in BaFe$_2$As$_2$, favoring an enhanced Fe magnetic moment. Here, we use time-resolved broadband terahertz spectroscopy to investigate the dynamics of BaFe$_2$As$_2$ in the $A_{1g}$ phonon driven state. Below the spin-density wave (SDW) transition temperature, we observe a transient gap generation at early time delays. A similar transient feature is observed in the normal state up to room temperature." @default.
- W4310921938 created "2022-12-21" @default.
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- W4310921938 date "2022-12-06" @default.
- W4310921938 modified "2023-09-27" @default.
- W4310921938 title "Transient gap generation in BaFe$_2$As$_2$ driven by coherent lattice vibrations" @default.
- W4310921938 doi "https://doi.org/10.48550/arxiv.2212.03337" @default.
- W4310921938 hasPublicationYear "2022" @default.
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