The 81st JSAP Autumn Meeting, 2020

Presentation information

Oral presentation

CS Code-sharing session » 【CS.4】 Code-sharing Session of 4.5 & 17

[9a-Z26-1~8] 【CS.4】 Code-sharing Session of 4.5 & 17

Wed. Sep 9, 2020 9:00 AM - 12:00 PM Z26

Yuhei Miyauchi(Kyoto Univ.)

10:00 AM - 10:15 AM

[9a-Z26-4] Ultrafast electron dynamics in semiconducting carbon nanotubes mediated by exciton and phonon coupling

〇(P)Stefano Dal Forno1, Marco Battiato1 (1.NTU)

Keywords:Carbon nanotubes CNT, Boltzmann equation, exciton phonon coupling

Semiconducting single-wall carbon nanotubes (SWCNTs) are exeptional one-dimensional materials for the construction of novel optoelectronic devices. Their peculiar properties arise from the tunability of quantities such as chirality, twist angle and diameter together with the scattering processes among different quasiparticles such as electrons, holes, phonons and excitons. It is therefore critical to model this theoretically hard problem to allow for the exploitation of CNTs properties in applications like low dimensional electronics or THz physics.
In this work we study the role of electron, hole, phonon and exciton coupling in (6,5) SWCNTs by theoretically modelling the experimental time-resolved absorption spectrum. We solve the full Boltzmann transport equation explicitly for high order scatterings and strongly out of equilibrium regimes. Our results show excellent agreement with experiments and show the capabilities of our newly developed numerical approach.