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

doi:10.1103/PhysRevB.93.165126

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

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

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 language	English
Article number	165126
Journal	Physical Review B
Volume	93
Issue number	16
DOIs	https://doi.org/10.1103/PhysRevB.93.165126
Publication status	Published - 2016 Apr 19

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.93.165126

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Ultrafast response of plasmalike reflectivity edge in (TMTTF)2As F6 driven by a 7-fs 1.5-cycle strong-light field. / Naitoh, Y.; Kawakami, Y.; Ishikawa, T.; Sagae, Y.; Itoh, H.; Yamamoto, K.; Sasaki, T.; Dressel, M.; Ishihara, S.; Tanaka, Y.; Yonemitsu, K.; Iwai, S.

In: Physical Review B, Vol. 93, No. 16, 165126, 19.04.2016.

Research output: Contribution to journal › Article › peer-review

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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.",

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AU - Kawakami, Y.

AU - Ishikawa, T.

AU - Sagae, Y.

AU - Itoh, H.

AU - Yamamoto, K.

AU - Sasaki, T.

AU - Dressel, M.

AU - Ishihara, S.

AU - Tanaka, Y.

AU - Yonemitsu, K.

AU - Iwai, S.

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AB - 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.

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

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