A Fortran 90 Hartree–Fock program for one-dimensional periodic π-conjugated systems using Pariser–Parr–Pople model

Published: 01-03-2012| Version 1 | DOI: 10.17632/wrgtvx2mtx.1
Gundra Kondayya,
Alok Shukla


Abstract Pariser–Parr–Pople (P-P-P) model Hamiltonian is employed frequently to study the electronic structure and optical properties of π-conjugated systems. In this paper we describe a Fortran 90 computer program which uses the P-P-P model Hamiltonian to solve the Hartree–Fock (HF) equation for infinitely long, one-dimensional, periodic, π-electron systems. The code is capable of computing the band structure, as also the linear optical absorption spectrum, by using the tight-binding and the HF metho... Title of program: ppp_bulk.x Catalogue Id: AEKW_v1_0 Nature of problem The electronic structure of one-dimensional periodic π-conjugated systems is an intense area of research at present because of the tremendous interest in the physics of conjugated polymers and graphene nanoribbons. The computer program described in this paper provides an efficient way of solving the Hartree-Fock equations for such systems within the P-P-P model. In addition to the Bloch orbitals, band structure, and the density of states, the program can also compute quantities such as the linea ... Versions of this program held in the CPC repository in Mendeley Data AEKW_v1_0; ppp_bulk.x; 10.1016/j.cpc.2011.11.006 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2018)