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zzy870720z(½ð±Ò+1):xiexie 2010-06-04 00:06:00
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zzy870720z(½ð±Ò+1):xiexie 2010-06-04 00:06:00
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ÄãÕâÇóÖú¾Í¸É¾»ÁË£¬ ×î¼òµ¥µÄ°ì·¨ÊǰÑÄãµÄÆÁÄ»Êä³öÖØ¶¨Ïòµ½Ò»¸öÎļþ£¬ ÄǸölogÎļþºóÃæ¾ÍÓÐTransmission °ÑÄÇЩÊý¾Ý¸´ÖƳöÀ´¾Í¿ÉÒÔÓÃOrigion×÷ͼÁË ¸ü¸ß²ã´ÎµÄÊÇÐ޸Ľű¾£¬³ÌÐò×Ô¶¯Éú³ÉTransmission.datÎļþ ÄǶ¼ÊÇ¿ÉÒԵģ¬ÄãÏÈÓüòµ¥µÄ |

2Â¥2010-06-03 23:49:54
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¸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()) ÕâÊÇÎÒµÄÊäÈëÎļþ£¬µ«ÊÇÎÒÏëµ¼³öÒ»¸öÊý¾ÝÎļþ£¬ÄãÄܸæËßÎÒÔõôÐÞ¸ÄÂð |
3Â¥2010-06-04 10:14:41
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gavinliu7390(½ð±Ò+2):лл½»Á÷£¡ 2010-06-04 22:19:00
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gavinliu7390(½ð±Ò+2):лл½»Á÷£¡ 2010-06-04 22:19:00
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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() |

4Â¥2010-06-04 16:37:10













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