Section EFIELD

• parameters for finite electric fields

• Section path: CP2K_INPUT / FORCE_EVAL / DFT / EFIELD

• This section can be repeated and cannot be optional.

• Subsections

  • CONSTANT_ENV
  • GAUSSIAN_ENV
  • RAMP_ENV

• Keywords

  • BERRY_PHASE
  • ENVELOP
  • INTENSITY
  • PHASE
  • POLARISATION
  • WAVELENGTH

• Keyword descriptions

  BERRY_PHASE
  	BERRY_PHASE ON/OFF
  	Berry phase not yet implemented
  	This optional keyword cannot be repeated and it expects precisely one logical.
  	Default value: .FALSE.

  ENVELOP
  	ENVELOP CONSTANT
  	Shape of the efield pulse
  	This optional keyword cannot be repeated and it expects precisely one keyword.
  	Default value: CONSTANT
  	List of valid keywords: CONSTANT No envelop function is applied to the strength GAUSSIAN A Gaussian function is used as envelop RAMP Linear tune in/out of the field

  INTENSITY
  	EFIELD_STRENGTH 1.0E15
  	Intensity of the electric field in W*cm-2 which corresponds to a maximal amplitude in a.u. of sqrt(I/(3.50944*10^16))
  	This optional keyword cannot be repeated and it expects precisely one real.
  	Default value: 0.00000000E+00

  PHASE
  	PHASE 1.E0
  	phase offset of the cosine given in multiples of pi
  	This optional keyword cannot be repeated and it expects precisely one real.
  	Default value: 0.00000000E+00

  POLARISATION
  	EFIELD_POLARISIATION 0.0 0.0 1.0
  	Polarisation vector of efield field
  	This optional keyword cannot be repeated and it expects precisely 3 reals.
  	Default values: 0.00000000E+00 0.00000000E+00 1.00000000E+00

  WAVELENGTH
  	WAVELENGTH 1.E0
  	Wavelength of efield field
  	This optional keyword cannot be repeated and it expects precisely one real.
  	Default value: 0.00000000E+00
  	Default unit: [nm]