Strong light field effect in highly correlated systems driven by single cycle infrared pulses

2015 Fiscal Year Final Research Report

• Project/Area Number: 26887003
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Condensed matter physics I
• Research Institution: Tohoku University
• Principal Investigator: Kawakami Yohei 東北大学, 理学(系)研究科(研究院), 助教 (60731172)
• Project Period (FY): 2014-08-29 – 2016-03-31
• Keywords: 光誘起相転移 / 超高速分光 / 強相関電子系

Outline of Final Research Achievements

Charge localizations (dynamical localization: decrease of transfer integral t) driven by strong light field are investigated by hand-made 6 fs, 1.3 cycle, 100 MV/cm infrared pulses in charge ordered (CO) and dimer-Mott (DM) type organic conductors. Optical freezing of charge motions - decrease of plasma frequency (proportional to the square root of t) in (TMTTF)2AsF6 (CO), photoinduced metal to insulator transitions in alpha-(ET)2I3 (CO) and kappa-(ET)2X salts (DM) - are realized by >10 MV/cm electric field of 1.3 cycle infrared pulses.

Free Research Field

光物性物理学