The 83rd JSAP Autumn Meeting 2022

Presentation information

Oral presentation

12 Organic Molecules and Bioelectronics » 12.2 Characterization and Materials Physics

[22p-C106-1~16] 12.2 Characterization and Materials Physics

Thu. Sep 22, 2022 1:30 PM - 6:00 PM C106 (C106)

Yoichi Yamada(Univ. of Tsukuba), Yasuyuki Yokota(RIKEN), Fukutani Keisuke(IMS)

4:45 PM - 5:00 PM

[22p-C106-12] Anisotropic many-body interactions in organic molecular crystal rubrene

Keisuke Fukutani1,2, Daijiro Okaue3, Ken-ichi Fukui3,1, Hiroyuki Ishii4, Yuri Hasegawa5, Kiyohisa Tanaka1,2, Satoshi Kera1,2 (1.IMS, 2.SOKENDAI, 3.Osaka Univ., 4.Tsukuba Univ., 5.Ritsumeikan Univ.)

Keywords:rubrene, Photoemission spectroscopy, Electron-phonon coupling

We have utilized angle-resolved photoemission spectroscopy (ARPES) to investigate the quasiparticle band structure of rubrene single crystal, with the aim of understanding its anisotropic polaron conductions. Our results shows the magnitude of intra-band gap induced by the electron-molecular vibration interactions discernably decreases at certain wavevectors, compared to the Γ-Y high-mobility direction. At this presentation, we will discuss on the possible origins of such inhomogeneity of many-body interactions in the momentum space.