Work

GW calculation of plasmon excitations in the quasi-one-dimensional organic compound (TMTSF) 2 PF 6

Year: 2013

Type: article

Abstract: We present an ab initio $GW$ calculation to study dynamical effects on an organic compound (TMTSF)${}_{2}$PF${}_{6}$. Calculated polarized reflectivities reproduce experimental plasma edges at around 0.2 eV for $E\ensuremath{\parallel}{b}^{\ensuremath{'}}$ and 1.0 eV for $E\ensuremath{\parallel}a$. The low-energy plasmons come out from the low-energy narrow bands energetically isolated from other higher-energy bands, and affect the low-energy electronic structure via the $GW$-type self-energy. Because of the quasi-one-dimensional band structure, a distinct plasmaron state is observed along the $Y$-$\ensuremath{\Gamma}$ line and a large plasmon-induced electron scattering is found in the low-energy occupied states along the $X$-$M$ line.

Source: Physical Review B

DOI: 10.1103/physrevb.88.125128

Authors: Kazuma Nakamura, Shiro Sakai, Ryotaro Arita, Kazuhiko Kuroki

Institutions: Kyushu Institute of Technology, The University of Tokyo, The University of Osaka

Language: Latvian

Topic: Organic and Molecular Conductors Research

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

Funder: Japan Society for the Promotion of Science

Award: Ab initio GW calculations for low-density carrier system