Ultrafast response of plasmalike reflectivity edge in (TMTTF)2As F6 driven by a 7-fs 1.5-cycle strong-light field

Y. Naitoh, Y. Kawakami, T. Ishikawa, Y. Sagae, H. Itoh, K. Yamamoto, T. Sasaki, M. Dressel, S. Ishihara, Yasuhiro Tanaka, K. Yonemitsu, S. Iwai

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Abstract

The strong-light field effect of (TMTTF)2AsF6 was investigated utilizing 1.5-cycle, 7-fs infrared pulses. The ultrafast (∼20fs) and large (∼40%) response of the plasmalike reflectivity edge (∼0.7eV) was analyzed by the changes in ωp=ne2/(∞0m) (n: number of charges in the frac14-filled band; m: mass of charge; ∞,0: dielectric constants for high frequency and vacuum; e: elementary charge). The 3% reduction in ωp is attributed to the 6% increase in m. Furthermore, 20 fs oscillation of ωp in the time domain indicates that the plasmalike edge is affected by the charge gap (∼0.2eV) nature. Theoretical calculations suggest that the Coulomb repulsion plays an important role in the increase in m.

Original languageEnglish
Article number165126
JournalPhysical Review B
Volume93
Issue number16
DOIs
Publication statusPublished - 2016 Apr 19
Externally publishedYes

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Naitoh, Y., Kawakami, Y., Ishikawa, T., Sagae, Y., Itoh, H., Yamamoto, K., Sasaki, T., Dressel, M., Ishihara, S., Tanaka, Y., Yonemitsu, K., & Iwai, S. (2016). Ultrafast response of plasmalike reflectivity edge in (TMTTF)2As F6 driven by a 7-fs 1.5-cycle strong-light field. Physical Review B, 93(16), [165126]. https://doi.org/10.1103/PhysRevB.93.165126