Source code for openbandparams.iii_v.zinc_blende.binary
#
# Copyright (c) 2013-2014, Scott J Maddox
#
# This file is part of openbandparams.
#
# openbandparams is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published
# by the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# openbandparams is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with openbandparams. If not, see <http://www.gnu.org/licenses/>.
#
#############################################################################
from math import tanh
from openbandparams.iii_v.binary import Binary
# Each Binary is a class instead of an instance because GaP has a different
# Eg_Gamma temperature dependence. I could have only had GaP be a subclass,
# but for consistency i just made them all subclasses.
[docs]class AlN(Binary):
name = 'AlN'
elements = ('Al', 'N')
_a_300K = 4.38 # Ang vurgaftman_band_2001
_da_dT = 0 # Ang/K vurgaftman_band_2001
_Eg_Gamma_0 = 4.9 # eV vurgaftman_band_2001
_alpha_Gamma = 0.000593 # eV/K vurgaftman_band_2001
_beta_Gamma = 600 # K vurgaftman_band_2001
_Eg_X_0 = 6 # eV vurgaftman_band_2001
_alpha_X = 0.000593 # eV/K vurgaftman_band_2001
_beta_X = 600 # K vurgaftman_band_2001
_Eg_L_0 = 9.3 # eV vurgaftman_band_2001
_alpha_L = 0.000593 # eV/K vurgaftman_band_2001
_beta_L = 600 # K vurgaftman_band_2001
_Delta_SO = 0.019 # eV vurgaftman_band_2001
_meff_e_Gamma = 0.25 # m_e vurgaftman_band_2001
_meff_e_X_long = 0.53 # m_e vurgaftman_band_2001
_meff_e_X_trans = 0.31 # m_e vurgaftman_band_2001
_Luttinger1 = 1.92 # vurgaftman_band_2001
_Luttinger2 = 0.47 # vurgaftman_band_2001
_Luttinger3 = 0.85 # vurgaftman_band_2001
_meff_SO = 0.47 # m_e vurgaftman_band_2001
_Ep = 27.1 # eV vurgaftman_band_2001
_F = 0.76 # vurgaftman_band_2001
_VBO = -3.44 # eV vurgaftman_band_2001
_a_c = -6 # eV vurgaftman_band_2001
_a_v = -3.4 # eV vurgaftman_band_2001
_b = -1.9 # eV vurgaftman_band_2001
_d = -10 # eV vurgaftman_band_2001
_c_11 = 304 # GPa vurgaftman_band_2001
_c_12 = 160 # GPa vurgaftman_band_2001
_c_44 = 193 # GPa vurgaftman_band_2001
[docs]class GaN(Binary):
name = 'GaN'
elements = ('Ga', 'N')
_a_300K = 4.5 # Ang vurgaftman_band_2001
_da_dT = 0 # Ang/K vurgaftman_band_2001
_Eg_Gamma_0 = 3.299 # eV vurgaftman_band_2001
_alpha_Gamma = 0.000593 # eV/K vurgaftman_band_2001
_beta_Gamma = 600 # K vurgaftman_band_2001
_Eg_X_0 = 4.52 # eV vurgaftman_band_2001
_alpha_X = 0.000593 # eV/K vurgaftman_band_2001
_beta_X = 600 # K vurgaftman_band_2001
_Eg_L_0 = 5.59 # eV vurgaftman_band_2001
_alpha_L = 0.000593 # eV/K vurgaftman_band_2001
_beta_L = 600 # K vurgaftman_band_2001
_Delta_SO = 0.017 # eV vurgaftman_band_2001
_meff_e_Gamma = 0.15 # m_e vurgaftman_band_2001
_meff_e_X_long = 0.5 # m_e vurgaftman_band_2001
_meff_e_X_trans = 0.3 # m_e vurgaftman_band_2001
_Luttinger1 = 2.67 # vurgaftman_band_2001
_Luttinger2 = 0.75 # vurgaftman_band_2001
_Luttinger3 = 1.1 # vurgaftman_band_2001
_meff_SO = 0.29 # m_e vurgaftman_band_2001
_Ep = 25 # eV vurgaftman_band_2001
_F = -0.92 # vurgaftman_band_2001
_VBO = -2.64 # eV vurgaftman_band_2001
_a_c = -2.2 # eV vurgaftman_band_2001
_a_v = -5.2 # eV vurgaftman_band_2001
_b = -2.2 # eV vurgaftman_band_2001
_d = -3.4 # eV vurgaftman_band_2001
_c_11 = 293 # GPa vurgaftman_band_2001
_c_12 = 159 # GPa vurgaftman_band_2001
_c_44 = 155 # GPa vurgaftman_band_2001
[docs]class InN(Binary):
name = 'InN'
elements = ('In', 'N')
_a_300K = 4.98 # Ang vurgaftman_band_2001
_da_dT = 0 # Ang/K vurgaftman_band_2001
_Eg_Gamma_0 = 1.94 # eV vurgaftman_band_2001
_alpha_Gamma = 0.000245 # eV/K vurgaftman_band_2001
_beta_Gamma = 624 # K vurgaftman_band_2001
_Eg_X_0 = 2.51 # eV vurgaftman_band_2001
_alpha_X = 0.000245 # eV/K vurgaftman_band_2001
_beta_X = 624 # K vurgaftman_band_2001
_Eg_L_0 = 5.82 # eV vurgaftman_band_2001
_alpha_L = 0.000245 # eV/K vurgaftman_band_2001
_beta_L = 624 # K vurgaftman_band_2001
_Delta_SO = 0.006 # eV vurgaftman_band_2001
_meff_e_Gamma = 0.12 # m_e vurgaftman_band_2001
_meff_e_X_long = 0.48 # m_e vurgaftman_band_2001
_meff_e_X_trans = 0.27 # m_e vurgaftman_band_2001
_Luttinger1 = 3.72 # vurgaftman_band_2001
_Luttinger2 = 1.26 # vurgaftman_band_2001
_Luttinger3 = 1.63 # vurgaftman_band_2001
_meff_SO = 0.3 # m_e vurgaftman_band_2001
_Ep = 25 # eV vurgaftman_band_2001
_F = -0.92 # vurgaftman_band_2001
_VBO = -2.38 # eV vurgaftman_band_2001
_a_c = -1.85 # eV vurgaftman_band_2001
_a_v = -1.5 # eV vurgaftman_band_2001
_b = -1.2 # eV vurgaftman_band_2001
_d = -9.3 # eV vurgaftman_band_2001
_c_11 = 187 # GPa vurgaftman_band_2001
_c_12 = 125 # GPa vurgaftman_band_2001
_c_44 = 86 # GPa vurgaftman_band_2001
[docs]class AlP(Binary):
name = 'AlP'
elements = ('Al', 'P')
_a_300K = 5.4672 # Ang vurgaftman_band_2001
_da_dT = 0.0000292 # Ang/K vurgaftman_band_2001
_Eg_Gamma_0 = 3.63 # eV vurgaftman_band_2001
_alpha_Gamma = 0.0005771 # eV/K vurgaftman_band_2001
_beta_Gamma = 372 # K vurgaftman_band_2001
_Eg_X_0 = 2.52 # eV vurgaftman_band_2001
_alpha_X = 0.000318 # eV/K vurgaftman_band_2001
_beta_X = 588 # K vurgaftman_band_2001
_Eg_L_0 = 3.57 # eV vurgaftman_band_2001
_alpha_L = 0.000318 # eV/K vurgaftman_band_2001
_beta_L = 588 # K vurgaftman_band_2001
_Delta_SO = 0.07 # eV vurgaftman_band_2001
_meff_e_Gamma = 0.22 # m_e vurgaftman_band_2001
_meff_e_X_long = 2.68 # m_e vurgaftman_band_2001
_meff_e_X_trans = 0.155 # m_e vurgaftman_band_2001
_Luttinger1 = 3.35 # vurgaftman_band_2001
_Luttinger2 = 0.71 # vurgaftman_band_2001
_Luttinger3 = 1.23 # vurgaftman_band_2001
_meff_SO = 0.3 # m_e vurgaftman_band_2001
_Ep = 17.7 # eV vurgaftman_band_2001
_F = -0.65 # vurgaftman_band_2001
_VBO = -1.74 # eV vurgaftman_band_2001
_a_c = -5.7 # eV vurgaftman_band_2001
_a_v = -3 # eV vurgaftman_band_2001
_b = -1.5 # eV vurgaftman_band_2001
_d = -4.6 # eV vurgaftman_band_2001
_c_11 = 1330 # GPa vurgaftman_band_2001
_c_12 = 630 # GPa vurgaftman_band_2001
_c_44 = 615 # GPa vurgaftman_band_2001
[docs]class GaP(Binary):
name = 'GaP'
elements = ('Ga', 'P')
_a_300K = 5.4505 # Ang vurgaftman_band_2001
_da_dT = 0.0000292 # Ang/K vurgaftman_band_2001
_Eg_Gamma_0 = 2.886 # eV vurgaftman_band_2001
_Eg_X_0 = 2.35 # eV vurgaftman_band_2001
_alpha_X = 0.0005771 # eV/K vurgaftman_band_2001
_beta_X = 372 # K vurgaftman_band_2001
_Eg_L_0 = 2.72 # eV vurgaftman_band_2001
_alpha_L = 0.0005771 # eV/K vurgaftman_band_2001
_beta_L = 372 # K vurgaftman_band_2001
_Delta_SO = 0.08 # eV vurgaftman_band_2001
_meff_e_Gamma = 0.13 # m_e vurgaftman_band_2001
_meff_e_L_long = 1.2 # m_e vurgaftman_band_2001
_meff_e_L_trans = 0.15 # m_e vurgaftman_band_2001
_meff_e_X_long = 2 # m_e vurgaftman_band_2001
_meff_e_X_trans = 0.253 # m_e vurgaftman_band_2001
_Luttinger1 = 4.05 # vurgaftman_band_2001
_Luttinger2 = 0.49 # vurgaftman_band_2001
_Luttinger3 = 2.93 # vurgaftman_band_2001
_meff_SO = 0.25 # m_e vurgaftman_band_2001
_Ep = 31.4 # eV vurgaftman_band_2001
_F = -2.04 # vurgaftman_band_2001
_VBO = -1.27 # eV vurgaftman_band_2001
_a_c = -8.2 # eV vurgaftman_band_2001
_a_v = -1.7 # eV vurgaftman_band_2001
_b = -1.6 # eV vurgaftman_band_2001
_d = -4.6 # eV vurgaftman_band_2001
_c_11 = 1405 # GPa vurgaftman_band_2001
_c_12 = 620.3 # GPa vurgaftman_band_2001
_c_44 = 703.3 # GPa vurgaftman_band_2001
@classmethod
[docs] def Eg_Gamma(cls, **kwargs):
'''
Returns the Gamma-valley bandgap, Eg_Gamma, in electron Volts at a
given temperature, T, in Kelvin (default: 300 K).
GaP has a unique Gamma-gap temperature dependence.
'''
T = cls._get_T(kwargs)
# vurgaftman_band_2001
return cls._Eg_Gamma_0 + 0.1081 * (1 - 1. / tanh(164. / T)) # eV
[docs]class InP(Binary):
name = 'InP'
elements = ('In', 'P')
_a_300K = 5.8697 # Ang vurgaftman_band_2001
_da_dT = 0.0000279 # Ang/K vurgaftman_band_2001
_Eg_Gamma_0 = 1.4236 # eV vurgaftman_band_2001
_alpha_Gamma = 0.000363 # eV/K vurgaftman_band_2001
_beta_Gamma = 162 # K vurgaftman_band_2001
_Eg_X_0 = 2.384 # eV vurgaftman_band_2001
_alpha_X = 0.00037 # eV/K vurgaftman_band_2001
_beta_X = 0 # K vurgaftman_band_2001
_Eg_L_0 = 2.014 # eV vurgaftman_band_2001
_alpha_L = 0.000363 # eV/K vurgaftman_band_2001
_beta_L = 162 # K vurgaftman_band_2001
_Delta_SO = 0.108 # eV vurgaftman_band_2001
_meff_e_Gamma = 0.0795 # m_e vurgaftman_band_2001
_meff_e_L_DOS = 0.47 # m_e vurgaftman_band_2001
_meff_e_X_DOS = 0.88 # m_e vurgaftman_band_2001
_Luttinger1 = 5.08 # vurgaftman_band_2001
_Luttinger2 = 1.6 # vurgaftman_band_2001
_Luttinger3 = 2.1 # vurgaftman_band_2001
_meff_SO = 0.21 # m_e vurgaftman_band_2001
_Ep = 20.7 # eV vurgaftman_band_2001
_F = -1.31 # vurgaftman_band_2001
_VBO = -0.94 # eV vurgaftman_band_2001
_a_c = -6 # eV vurgaftman_band_2001
_a_v = -0.6 # eV vurgaftman_band_2001
_b = -2 # eV vurgaftman_band_2001
_d = -5 # eV vurgaftman_band_2001
_c_11 = 1011 # GPa vurgaftman_band_2001
_c_12 = 561 # GPa vurgaftman_band_2001
_c_44 = 456 # GPa vurgaftman_band_2001
[docs]class AlAs(Binary):
name = 'AlAs'
elements = ('Al', 'As')
_a_300K = 5.6611 # Ang vurgaftman_band_2001
_da_dT = 0.000029 # Ang/K vurgaftman_band_2001
_Eg_Gamma_0 = 3.099 # eV vurgaftman_band_2001
_alpha_Gamma = 0.000885 # eV/K vurgaftman_band_2001
_beta_Gamma = 530 # K vurgaftman_band_2001
_Eg_X_0 = 2.24 # eV vurgaftman_band_2001
_alpha_X = 0.0007 # eV/K vurgaftman_band_2001
_beta_X = 530 # K vurgaftman_band_2001
_Eg_L_0 = 2.46 # eV vurgaftman_band_2001
_alpha_L = 0.000605 # eV/K vurgaftman_band_2001
_beta_L = 204 # K vurgaftman_band_2001
_Delta_SO = 0.28 # eV vurgaftman_band_2001
_meff_e_Gamma = 0.15 # m_e vurgaftman_band_2001
_meff_e_L_long = 1.32 # m_e vurgaftman_band_2001
_meff_e_L_trans = 0.15 # m_e vurgaftman_band_2001
_meff_e_X_long = 0.97 # m_e vurgaftman_band_2001
_meff_e_X_trans = 0.22 # m_e vurgaftman_band_2001
_Luttinger1 = 3.76 # vurgaftman_band_2001
_Luttinger2 = 0.82 # vurgaftman_band_2001
_Luttinger3 = 1.42 # vurgaftman_band_2001
_meff_SO = 0.28 # m_e vurgaftman_band_2001
_Ep = 21.1 # eV vurgaftman_band_2001
_F = -0.48 # vurgaftman_band_2001
_VBO = -1.33 # eV vurgaftman_band_2001
_a_c = -5.64 # eV vurgaftman_band_2001
_a_v = -2.47 # eV vurgaftman_band_2001
_b = -2.3 # eV vurgaftman_band_2001
_d = -3.4 # eV vurgaftman_band_2001
_c_11 = 1250 # GPa vurgaftman_band_2001
_c_12 = 534 # GPa vurgaftman_band_2001
_c_44 = 542 # GPa vurgaftman_band_2001
[docs]class GaAs(Binary):
name = 'GaAs'
elements = ('Ga', 'As')
_a_300K = 5.65325 # Ang vurgaftman_band_2001
_da_dT = 0.0000388 # Ang/K vurgaftman_band_2001
_Eg_Gamma_0 = 1.519 # eV vurgaftman_band_2001
_alpha_Gamma = 0.0005405 # eV/K vurgaftman_band_2001
_beta_Gamma = 204 # K vurgaftman_band_2001
_Eg_X_0 = 1.981 # eV vurgaftman_band_2001
_alpha_X = 0.00046 # eV/K vurgaftman_band_2001
_beta_X = 204 # K vurgaftman_band_2001
_Eg_L_0 = 1.815 # eV vurgaftman_band_2001
_alpha_L = 0.000605 # eV/K vurgaftman_band_2001
_beta_L = 204 # K vurgaftman_band_2001
_Delta_SO = 0.341 # eV vurgaftman_band_2001
_meff_e_Gamma = 0.067 # m_e vurgaftman_band_2001
_meff_e_L_long = 1.9 # m_e vurgaftman_band_2001
_meff_e_L_trans = 0.0754 # m_e vurgaftman_band_2001
_meff_e_L_DOS = 0.56 # m_e vurgaftman_band_2001
_meff_e_X_long = 1.3 # m_e vurgaftman_band_2001
_meff_e_X_trans = 0.23 # m_e vurgaftman_band_2001
_meff_e_X_DOS = 0.85 # m_e vurgaftman_band_2001
_Luttinger1 = 6.98 # vurgaftman_band_2001
_Luttinger2 = 2.06 # vurgaftman_band_2001
_Luttinger3 = 2.93 # vurgaftman_band_2001
_meff_SO = 0.172 # m_e vurgaftman_band_2001
_Ep = 28.8 # eV vurgaftman_band_2001
_F = -1.94 # vurgaftman_band_2001
_VBO = -0.8 # eV vurgaftman_band_2001
_a_c = -7.17 # eV vurgaftman_band_2001
_a_v = -1.16 # eV vurgaftman_band_2001
_b = -2 # eV vurgaftman_band_2001
_d = -4.8 # eV vurgaftman_band_2001
_c_11 = 1221 # GPa vurgaftman_band_2001
_c_12 = 566 # GPa vurgaftman_band_2001
_c_44 = 600 # GPa vurgaftman_band_2001
[docs]class InAs(Binary):
name = 'InAs'
elements = ('In', 'As')
_a_300K = 6.0583 # Ang vurgaftman_band_2001
_da_dT = 0.0000274 # Ang/K vurgaftman_band_2001
_Eg_Gamma_0 = 0.417 # eV vurgaftman_band_2001
_alpha_Gamma = 0.000276 # eV/K vurgaftman_band_2001
_beta_Gamma = 93 # K vurgaftman_band_2001
_Eg_X_0 = 1.9 # eV williams_experimental_1986
_alpha_X = 0.000276 # eV/K vurgaftman_band_2001
_beta_X = 93 # K vurgaftman_band_2001
_Eg_L_0 = 1.53 # eV kim_towards_2010
_alpha_L = 0.000276 # eV/K vurgaftman_band_2001
_beta_L = 93 # K vurgaftman_band_2001
_Delta_SO = 0.39 # eV vurgaftman_band_2001
_meff_e_Gamma = 0.026 # m_e vurgaftman_band_2001
_meff_e_L_long = 0.64 # m_e vurgaftman_band_2001
_meff_e_L_trans = 0.05 # m_e vurgaftman_band_2001
_meff_e_L_DOS = 0.29 # m_e vurgaftman_band_2001
_meff_e_X_long = 1.13 # m_e vurgaftman_band_2001
_meff_e_X_trans = 0.16 # m_e vurgaftman_band_2001
_meff_e_X_DOS = 0.64 # m_e vurgaftman_band_2001
_Luttinger1 = 20 # vurgaftman_band_2001
_Luttinger2 = 8.5 # vurgaftman_band_2001
_Luttinger3 = 9.2 # vurgaftman_band_2001
_meff_SO = 0.14 # m_e vurgaftman_band_2001
_Ep = 21.5 # eV vurgaftman_band_2001
_F = -2.9 # vurgaftman_band_2001
_VBO = -0.59 # eV vurgaftman_band_2001
_a_c = -5.08 # eV vurgaftman_band_2001
_a_v = -1 # eV vurgaftman_band_2001
_b = -1.8 # eV vurgaftman_band_2001
_d = -3.6 # eV vurgaftman_band_2001
_c_11 = 832.9 # GPa vurgaftman_band_2001
_c_12 = 452.6 # GPa vurgaftman_band_2001
_c_44 = 395.9 # GPa vurgaftman_band_2001
[docs]class AlSb(Binary):
name = 'AlSb'
elements = ('Al', 'Sb')
_a_300K = 6.1355 # Ang vurgaftman_band_2001
_da_dT = 0.000026 # Ang/K vurgaftman_band_2001
_Eg_Gamma_0 = 2.386 # eV vurgaftman_band_2001
_alpha_Gamma = 0.00042 # eV/K vurgaftman_band_2001
_beta_Gamma = 140 # K vurgaftman_band_2001
_Eg_X_0 = 1.696 # eV vurgaftman_band_2001
_alpha_X = 0.00039 # eV/K vurgaftman_band_2001
_beta_X = 140 # K vurgaftman_band_2001
_Eg_L_0 = 2.329 # eV vurgaftman_band_2001
_alpha_L = 0.00058 # eV/K vurgaftman_band_2001
_beta_L = 140 # K vurgaftman_band_2001
_Delta_SO = 0.676 # eV vurgaftman_band_2001
_meff_e_Gamma = 0.14 # m_e vurgaftman_band_2001
_meff_e_L_long = 1.64 # m_e vurgaftman_band_2001
_meff_e_L_trans = 0.23 # m_e vurgaftman_band_2001
_meff_e_X_long = 1.357 # m_e vurgaftman_band_2001
_meff_e_X_trans = 0.123 # m_e vurgaftman_band_2001
_Luttinger1 = 5.18 # vurgaftman_band_2001
_Luttinger2 = 1.19 # vurgaftman_band_2001
_Luttinger3 = 1.97 # vurgaftman_band_2001
_meff_SO = 0.22 # m_e vurgaftman_band_2001
_Ep = 18.7 # eV vurgaftman_band_2001
_F = -0.56 # vurgaftman_band_2001
_VBO = -0.41 # eV vurgaftman_band_2001
_a_c = -4.5 # eV vurgaftman_band_2001
_a_v = -1.4 # eV vurgaftman_band_2001
_b = -1.35 # eV vurgaftman_band_2001
_d = -4.3 # eV vurgaftman_band_2001
_c_11 = 876.9 # GPa vurgaftman_band_2001
_c_12 = 434.1 # GPa vurgaftman_band_2001
_c_44 = 407.6 # GPa vurgaftman_band_2001
[docs]class GaSb(Binary):
name = 'GaSb'
elements = ('Ga', 'Sb')
_a_300K = 6.0959 # Ang vurgaftman_band_2001
_da_dT = 0.0000472 # Ang/K vurgaftman_band_2001
_Eg_Gamma_0 = 0.812 # eV vurgaftman_band_2001
_alpha_Gamma = 0.000417 # eV/K vurgaftman_band_2001
_beta_Gamma = 140 # K vurgaftman_band_2001
_Eg_X_0 = 1.141 # eV vurgaftman_band_2001
_alpha_X = 0.000475 # eV/K vurgaftman_band_2001
_beta_X = 94 # K vurgaftman_band_2001
_Eg_L_0 = 0.875 # eV vurgaftman_band_2001
_alpha_L = 0.000597 # eV/K vurgaftman_band_2001
_beta_L = 140 # K vurgaftman_band_2001
_Delta_SO = 0.76 # eV vurgaftman_band_2001
_meff_e_Gamma = 0.039 # m_e vurgaftman_band_2001
_meff_e_L_long = 1.3 # m_e vurgaftman_band_2001
_meff_e_L_trans = 0.1 # m_e vurgaftman_band_2001
_meff_e_X_long = 1.51 # m_e vurgaftman_band_2001
_meff_e_X_trans = 0.22 # m_e vurgaftman_band_2001
_Luttinger1 = 13.4 # vurgaftman_band_2001
_Luttinger2 = 4.7 # vurgaftman_band_2001
_Luttinger3 = 6 # vurgaftman_band_2001
_meff_SO = 0.12 # m_e vurgaftman_band_2001
_Ep = 27 # eV vurgaftman_band_2001
_F = -1.63 # vurgaftman_band_2001
_VBO = -0.03 # eV vurgaftman_band_2001
_a_c = -7.5 # eV vurgaftman_band_2001
_a_v = -0.8 # eV vurgaftman_band_2001
_b = -2 # eV vurgaftman_band_2001
_d = -4.7 # eV vurgaftman_band_2001
_c_11 = 884.2 # GPa vurgaftman_band_2001
_c_12 = 402.6 # GPa vurgaftman_band_2001
_c_44 = 432.2 # GPa vurgaftman_band_2001
[docs]class InSb(Binary):
name = 'InSb'
elements = ('In', 'Sb')
_a_300K = 6.4794 # Ang vurgaftman_band_2001
_da_dT = 0.0000348 # Ang/K vurgaftman_band_2001
_Eg_Gamma_0 = 0.235 # eV vurgaftman_band_2001
_alpha_Gamma = 0.00032 # eV/K vurgaftman_band_2001
_beta_Gamma = 170 # K vurgaftman_band_2001
_Eg_X_0 = 1.8 # eV williams_experimental_1986
_alpha_X = 0.00032 # eV/K vurgaftman_band_2001
_beta_X = 170 # K vurgaftman_band_2001
_Eg_L_0 = 0.93 # eV vurgaftman_band_2001
_alpha_L = 0.00032 # eV/K vurgaftman_band_2001
_beta_L = 170 # K vurgaftman_band_2001
_Delta_SO = 0.81 # eV vurgaftman_band_2001
_meff_e_Gamma = 0.0135 # m_e vurgaftman_band_2001
_meff_e_L_DOS = 0.25 # m_e vurgaftman_band_2001
_Luttinger1 = 34.8 # vurgaftman_band_2001
_Luttinger2 = 15.5 # vurgaftman_band_2001
_Luttinger3 = 16.5 # vurgaftman_band_2001
_meff_SO = 0.11 # m_e vurgaftman_band_2001
_Ep = 23.3 # eV vurgaftman_band_2001
_F = -0.23 # vurgaftman_band_2001
_VBO = 0 # eV vurgaftman_band_2001
_a_c = -6.94 # eV vurgaftman_band_2001
_a_v = -0.36 # eV vurgaftman_band_2001
_b = -2 # eV vurgaftman_band_2001
_d = -4.7 # eV vurgaftman_band_2001
_c_11 = 684.7 # GPa vurgaftman_band_2001
_c_12 = 373.5 # GPa vurgaftman_band_2001
_c_44 = 311.1 # GPa vurgaftman_band_2001
binaries = [AlN, GaN, InN,
AlP, GaP, InP,
AlAs, GaAs, InAs,
AlSb, GaSb, InSb]
__all__ = ['binaries']
__all__ += [binary.name for binary in binaries]