Ultrafast Pump–Probe Spectroscopy in Organic Dirac Electron Candidate α-(BETS)2I3-Reference-Cited by-同舟云学术

Ultrafast Pump–Probe Spectroscopy in Organic Dirac Electron Candidate α-(BETS)2I3

Published:2023-10-10 Issue:4 Volume:8 Page:88
ISSN:2410-3896
Container-title:Condensed Matter
language:en
Short-container-title:Condensed Matter

Author:

Tsuchiya Satoshi¹^ORCID,Katsumi Masato¹,Oka Ryuhei²,Naito Toshio²^ORCID,Toda Yasunori¹

Affiliation:

1. Department of Applied Physics, Hokkaido University, Sapporo 060-8628, Hokkaido, Japan

2. Graduate School of Science and Engineering, Ehime University, Matsuyama 790-8577, Ehime, Japan

Abstract

Photo-induced carrier dynamics were measured in the organic Dirac electron candidate α-(BETS)2I3 to investigate why resistivity increases below TMI = 50 K. We found a change in carrier dynamics due to an insulating gap formation below T′ = 50 K. On the other hand, the relaxation time and polarization anisotropy of the observed dynamics differ from those in the charge-ordering (CO) state of the isostructural salt α-(ET)2I3. Based on the difference, it can be concluded that the insulating phase has a different origin than the CO state.

Funder

JSPS KAKENHI

Publisher

MDPI AG

Subject

Condensed Matter Physics,Electronic, Optical and Magnetic Materials

Link

https://www.mdpi.com/2410-3896/8/4/88/pdf

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