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zzy870720z(½ð±Ò+1):xiexie 2010-06-04 00:06:00
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Originally posted by zhangying09 at 2010-06-03 21:57:03:
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2Â¥2010-06-03 23:49:54
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zhangying09

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Originally posted by 163.com at 2010-06-03 23:49:54:


ÄãÕâÇóÖú¾Í¸É¾»ÁË£¬

×î¼òµ¥µÄ°ì·¨ÊǰÑÄãµÄÆÁÄ»Êä³öÖØ¶¨Ïòµ½Ò»¸öÎļþ£¬ ÄǸölogÎļþºóÃæ¾ÍÓÐTransmission

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¸ü¸ß²ã´ÎµÄÊÇÐ޸Ľű¾£¬³ÌÐò×Ô¶¯Éú³ÉTransmissio ...

¸ü¸ß²ã´ÎµÄÊÇÐ޸Ľű¾£¬³ÌÐò×Ô¶¯Éú³ÉTransmission,ÎÒÏëÎÊÒ»ÏÂʲôÃüÁî¿ÉÒÔÄØ£¿

from ATK.TwoProbe import *
# Restoring the SCF from the previous calculation
scf = restoreSelfConsistentCalculation('si-bias-1.0.nc')

# Create a list of energies from -5 to 5 eV, with 0.1 eV spacing
import numpy
energy_list = numpy.arange(-5.0, 5.0, 0.1)*electronVolt
# Set k-points for transmission
bz_int_param = brillouinZoneIntegrationParameters( (5,5,100) )
spectrum = calculateTransmissionSpectrum(
self_consistent_calculation=scf,
energies = energy_list,
brillouin_zone_integration_parameters=bz_int_param)
# Save the transmission spectrum to VNL file
vnlfile = VNLFile("transmission.vnl"
vnlfile.addToSample(spectrum,'transmission')
# Print at screen the Transmission Spectrum
print 'Transmission Spectrum'
print '-----------------------------------------------------------------------'
print 'Energies(eV) Coefficients'
for i in range(len(spectrum.energies())):
    print '%17.3f %17.6f' %(
         spectrum.energies().inUnitsOf(Units.eV),
         spectrum.coefficients())
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3Â¥2010-06-04 10:14:41
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163.com

½ð³æ (ÖøÃûдÊÖ)

ʵϰ°æÖ÷

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Сľ³æ(½ð±Ò+0.5):¸ø¸öºì°ü£¬Ð»Ð»»ØÌû½»Á÷
gavinliu7390(½ð±Ò+2):лл½»Á÷£¡ 2010-06-04 22:19:00
ÒýÓûØÌû:
Originally posted by zhangying09 at 2010-06-04 10:14:41:



¸ü¸ß²ã´ÎµÄÊÇÐ޸Ľű¾£¬³ÌÐò×Ô¶¯Éú³ÉTransmission,ÎÒÏëÎÊÒ»ÏÂʲôÃüÁî¿ÉÒÔÄØ£¿

from ATK.TwoProbe import *
# Restoring the SCF from the previous calculation
scf = restoreSelfConsistentCalculat ...

ÄãÔÚ³ÌÐò×îºó¼ÓÉÏÕâ¶Î½Å±¾£¬T¾Í»áдÈëµ½ ¡°trans.dat¡± ÖУº

f = open('trans.dat','w')  
import numpy
transmission_spectrum = calculateTransmissionSpectrum(
    self_consistent_calculation = scf,
    energies = numpy.arange(-5.0, 5.0+0.002, 0.02)*electronVolt,
    brillouin_zone_integration_parameters = brillouinZoneIntegrationParameters((1, 1)),
    green_function_infinitesimal = 1.0e-5*electronVolt
)
energies = transmission_spectrum.energies()
coefficients = transmission_spectrum.coefficients()
if len(coefficients.shape)==2:
    # spin-polarized
    print '                     Transmission'
    print 'Energy (eV)     Spin-up       Spin-down'
    print '------------------------------------------'
    for i in range(len(energies)):
        print "%g\t%g\t%g\n" % ( energies.inUnitsOf(eV),
            coefficients[0,i],coefficients[1,i] )
        s = '%g\t%g\t%g\n' % ( energies.inUnitsOf(eV),
            coefficients[0,i],coefficients[1,i] )
        f.write(s)
else:
    print 'Energy (eV)     Transmission'
    print '-----------------------------------'
    for i in range(len(energies)):
        print "%g\t%g\n" % ( energies.inUnitsOf(eV),coefficients )
        s = '%g\t%g\n' % ( energies.inUnitsOf(eV),coefficients )
        f.write(s)
f.close()
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4Â¥2010-06-04 16:37:10
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ zhangying09 µÄÖ÷Ìâ¸üÐÂ
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