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, Y. Tanaka, K. Yonemitsu, S. Iwai

*この研究の対応する著者

研究成果: Article査読

13 被引用数 (Scopus)

抄録

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.

本文言語English
論文番号165126
ジャーナルPhysical Review B
93
16
DOI
出版ステータスPublished - 2016 4月 19
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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