print("\n" + str(algaas) + ":\n")
for val in mp.valdict:
print(val + " = " + str(algaas.params[mp.valdict[val]]))
print("\n" + str(alingaas) + ":\n")
for val in mp.valdict:
print(val + " = " + str(alingaas.params[mp.valdict[val]]))
print(sep)
print('Creating a structure from generated materials:\n')
# creating a quantum-cascade structure:
s = Structure()
# set interface roughness parameters for all interfaces:
s.setIFR(eta=0.1, lam=2.0)
# Add layers:
s.addLayerWM(8.4, gaas)
s.addLayerWM(3.1, algaas)
s.addLayerWM(18.0, gaas) # <--- this is layer 2!
s.addLayerWM(1.8, algaas)
s.addLayerWM(8.4, gaas)
s.addLayerWM(3.1, algaas)
s.addLayerWM(18.0, gaas)
s.addLayerWM(1.8, algaas)
# add a doping layer
s.addDoping(zi=2, zf=2.2, density=2e17, layerindex=2)
qcl_2well = EV2416()
gaas = GaAs()
alas = AlAs()
algaas1 = AlGaAs(name="AlGaAs1", x=0.22)
algaas2 = AlGaAs(name="AlGaAs2", x=0.43)
print(sep)
print('Creating a structure from generated materials:\n')
print('[width, material, eta, lambda]')
# creating a two quantum-well structure
s = Structure()
# set interface roughness parameters for all interfaces:
eta = 0.1
lam = 2.0
s.setIFR(eta, lam)
# Add layers:
s.addLayerWM(7.4, algaas2)
s.addLayerWM(2.5, gaas)
s.addLayerWM(0.5, gaas) # <-- doped layer 2
s.addLayerWM(2.5, gaas)
s.addLayerWM(8.7, algaas1)
s.addLayerWM(7.4, algaas2)
# define doping layer
zstart = 0.01
zend = 0.499
dopdens = 2e19
layer = 2
alingaas.updateAlloy(z[i])
ec.append(alingaas.params["Ec"] - ingaas.params["Ec"])
m.append(alingaas.params["meff"])
va.append(alingaas.params["Valloy"])
# reproducing plot from Ohtani APL 2013:
pl.plot(x, m)
ax1 = pl.gca()
ax2 = ax1.twinx()
ax2.plot(x, ec, 'r')
pl.figure(2)
pl.plot(x, va)
s = Structure()
s.setIFR(0.1, 2)
x = 0.23 / 0.48
alingaas.updateAlloy(x)
print("Using x = " + str(x) + " yields a CBO of " +
str(alingaas.params["Ec"] - ingaas.params["Ec"]))
for key in alingaas.params:
print(key + " = " + str(alingaas.params[key]))
s.addLayerWM(17.7, ingaas)
s.addLayerWM(3.1, alingaas)
s.addLayerWM(8.5, ingaas)
s.addLayerWM(1.8, alingaas)