Ultrafast response of plasmalike reflectivity edge in(TMTTF)2AsF6driven by a 7-fs 1.5-cycle strong-light field

Autor:	Kaoru Yamamoto, S. Iwai, Takahiro Ishikawa, Y. Naitoh, Kenji Yonemitsu, Martin Dressel, Y. Kawakami, H. Itoh, Takahiko Sasaki, Yasuhiro Tanaka, Sumio Ishihara, Yuto Sagae
Rok vydání:	2016
Předmět:	Physics Condensed matter physics Infrared Oscillation Charge (physics) Dielectric Elementary charge 01 natural sciences Omega 010305 fluids & plasmas Physics::Space Physics 0103 physical sciences Atomic physics 010306 general physics Ultrashort pulse Light field
Zdroj:	Physical Review B. 93
ISSN:	2469-9969 2469-9950
DOI:	10.1103/physrevb.93.165126
Popis:	The strong light-field effect of (TMTTF)2AsF6 was investigated utilizing 1.5-cycle, 7-fs infrared pulses. The ultarfast (20 fs) and large (40%) response of the plasma-like reflectivity edge (0.7 eV) was analyzed by the changes in omega_p=sqrt(ne2/(epsilon_0*epsilon(infty)*m)} (n: number of charges in the 1/4 filled-band, m: mass of charge, epsilon(infty): dielectric constants for high-frequency and vacuum, e: elementary charge). The 3% reduction in omega_p is attributed to the 6% increase in m. Furthermore, 20 fs oscillation of omega_p in the time domain indicates that the plasma-like edge is affected by the charge gap (0.2 eV) nature. Theoretical calculations suggest that the Coulomb repulsion plays an important role in the increase in m.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::02feb943b037b9f8a3cc323973444711 https://doi.org/10.1103/physrevb.93.165126 Zobrazit plný text záznamu