FLOQUET

Parameters controlling the calculation of the Floquet band structure and Quasi-energies of a system driven by a periodic monochromatic electric field with any arbitrary polarisation state. [Edit on GitHub]

Keywords

• AMPLITUDE

• BROADENING

• ENERGY_STEP

• ENERGY_WINDOW

• EPS_FLOQUET

• FLOQUET_DOS_FILE_NAME

• FREQUENCY

• MAX_FLOQUET_INDEX

• PHASE_OFFSETS

• POLARISATION

• QUASI_ENERGIES_FILE_NAME

Keyword descriptions

AMPLITUDE: real = 0.00000000E+000 [Vm-1]

Usage: AMPLITUDE [Vm-1] 1.0E9

Electric field amplitude of the monochromatic light. [Edit on GitHub]

BROADENING: real = 2.00000000E-002 [eV]

Usage: BROADENING 0.02

Lorentzian broadening applied to the peaks of the Floquet spectral function. [Edit on GitHub]

ENERGY_STEP: real = 1.00000000E-002 [eV]

Usage: ENERGY_STEP 0.01

Resolution of the energy E used to compute the spectral function within the energy window. [Edit on GitHub]

ENERGY_WINDOW: real = 1.00000000E+001 [eV]

Usage: ENERGY_WINDOW 5.0

Half-width of the energy range, in eV, centred on the Fermi level, over which the Floquet spectral function is evaluated. [Edit on GitHub]

EPS_FLOQUET: real = 1.00000000E-010

Usage: EPS_FLOQUET 1.e-10

Threshold on the error due to truncation of the Floquet Hamiltonian. Used to verify that MAX_FLOQUET_INDEX is large enough that truncation errors are small. If negative, the check is removed (not recommended). [Edit on GitHub]

FLOQUET_DOS_FILE_NAME: string = FLOQUET_DOS

Usage: FLOQUET_DOS_FILE_NAME FLOQUET_DOS

File name used for the Floquet spectral function. [Edit on GitHub]

FREQUENCY: real = 1.00000000E+000 [eV]

Usage: FREQUENCY 1.5

Frequency of the electric field for Floquet calculations expressed in terms of the energy of a photon in eV. [Edit on GitHub]

MAX_FLOQUET_INDEX: integer = 50

Usage: MAX_FLOQUET_INDEX 50

Largest absolute Floquet index up to which Floquet Hamiltonian is truncated. Use a larger value to ensure convergence at higher computational cost and a smaller value for faster computation. EPS_FLOQUET checks to ensure that the error due to truncation is small. [Edit on GitHub]

PHASE_OFFSETS: real[3] = 0.00000000E+000 0.00000000E+000 0.00000000E+000

Usage: PHASE_OFFSETS 0.5 0 0

Phase offset of the electric field in the x, y, and z directions given in multiples of π. For linearly polarized light, use 0 0 0 and for left-circularly polarized light travelling in the +z direction use PHASE_OFFSET 0.0 0.5 0 [Edit on GitHub]

POLARISATION: real[3] = 0.00000000E+000 0.00000000E+000 1.00000000E+000

Usage: POLARISATION 0.0 0.0 1.0

Polarisation vector of the input light. The amplitude in each direction is the product of the AMPLITUDE and the POLARISATION vector component. Eg. for light polarized in the x direction, use 1 0 0. For left-circularly polarized light travelling in the +z direction use 1 1 0 and set PHASE_OFFSET 0 0.5 0 for a +π/2 offset [Edit on GitHub]

QUASI_ENERGIES_FILE_NAME: string = QUASI_ENERGIES

Usage: QUASI_ENERGIES_FILE_NAME QUASI_ENERGIES

File name used for the Floquet quasi-energies. [Edit on GitHub]