Units

The internal units of OpenFerro are:

• mass = eV/(Angstroms/picoseconds)^2

• distance = Angstroms

• time = picoseconds

• energy = eV

• velocity = Angstroms/picosecond

• force = eV/Angstrom

• temperature = Kelvin

• pressure = eV/Angstrom^3

• charge = multiple of electron charge (1.0 is a proton)

• dipole = charge*Angstroms

• electric field = volts/Angstrom

• Magnetic dipole moment = Bohr magneton

• Magnetic field = eV / Bohr magneton

A few constants are defined in the openferro.units module:

• Boltzmann constant: 8.6173303e-5 [eV/K]

• Vacuum permittivity: 5.526349406e-3 [\(e^2(\text{eV*\AA})^{-1}\)]

• Elementary charge: 1.0 [electron charge]

• Atomic mass unit: 0.0001035 [\(\text{eV (A/ps)^{-2}}\)]

• Electron g-factor: 2.00231930436