pi_drude: Simplifed Drude Polarizability of Uncoupled Sheet
In tjconstant/grapheneSPP: Graphene SPP Dispersion Calculation

Description Usage Arguments Details Value References

The polarizability of an uncoupled sheet described by the Drude model

1	pi_drude(q, omega, eps_inf, E_f, tau)

`q`	wavevector [m^-1]
`omega`	angular frequency [s^-1]
`eps_inf`	permittivity at infinity / high frequency dielectric constant
`E_f`	Fermi energy [J]
`tau`	relaxation time of electrons [s]

Note the conductivity of graphene contains two contributions for interband and intraband (Drude) transistions. This model assumes h_bar*omega < 2E_f, and so interband conductivity may be neglected.

returns the total dielectirc function

[1] Low, T. & Avouris, P. ACS Nano (2014), 8, 1086

[2] Gan, C. H. Appl. Phys. Lett. (2012) 101 111609

tjconstant/grapheneSPP documentation built on May 31, 2019, 3:38 p.m.