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fan0221
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zdhlover(½ð±Ò+2,VIP+0):»¶Ó½»Á÷
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ÎÒ¾ÍÊÇÏëÎÊÈçºÎ±àÒëÕâ¸ö¿ØÖƽá¹ûµÄÓï¾ä ±ÈÈç from ATK.TwoProbe import * # Restore initial density from old calculation zero_bias = restoreSelfConsistentCalculation("lih2li-scf.nc" ![]() # Create a list of energies from -2 to 5 eV, with 0.1 eV spacing import numpy energy_list = numpy.arange(-2.0, 5.0, 0.1)*electronVolt # Set k-points for transmission bz_int_param = brillouinZoneIntegrationParameters( (1,1) ) # Calculate transmission spectrum trans_spectrum = calculateTransmissionSpectrum( self_consistent_calculation = zero_bias, energies = energy_list, brillouin_zone_integration_parameters = bz_int_param ) vnlfile = VNLFile("lih2li_trans.vnl" ![]() vnlfile.addToSample(trans_spectrum,'lih2li') # Define conductance quantum conductance_quantum = 7.748091733e-5*Siemens # Calculate transmission spectrum at E_Fermi fermi_trans = calculateTransmissionSpectrum( self_consistent_calculation = zero_bias, energies = [0.0]*electronVolt ) conductance = fermi_trans.coefficients()[0] * conductance_quantum print 'Zero bias conductance: %.2e Siemens' % (conductance.inUnitsOf(Siemens)) ¼´Ê¹ ÎÒÔÚ¼ÆËãµÄʱºòÊÇ atk trans.py > trans.dat ×îºóÒ²Ö»ÊÇÔÚdatÎļþÖиø³öÁË Zero bias conductance: 4.08e-005 Siemens ÄÇôÈçºÎд¸ö¿ØÖÆÓï¾ä °ÑÊäÔËϵÊýÒ²Êä³öÄØ Âé·³Ã÷°×µÄ´ïÈËÒÔÕâ¸öΪÀý×Ó°ïÎÒд¸ö¿ØÖÆÓï¾ä лл [ Last edited by fan0221 on 2008-12-26 at 21:16 ] |

4Â¥2008-12-26 20:25:56
zdhlover
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fegg7502(½ð±Ò+3,VIP+0):thanks
fegg7502(½ð±Ò+3,VIP+0):thanks
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2Â¥2008-12-26 19:56:49
yuan888
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3Â¥2008-12-26 19:58:00
TIGERYZZ
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¸øÒÔ¸ö˵Ã÷Êé×Ô´ø³ÌÐòÀïµÄpy½Å±¾¸øÄã×÷²Î¿¼ # 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()) ÔÚÄãµÄ½Å±¾ÀïдºÃÕâЩÊä³öµÄÓï¾äºó£¬ÓÃÂ¥ÉÏ˵µÄ ATK filename.py > filename.dat ¾Í¿ÉÒÔ°ÑÊä³öµÄ¶«Î÷±£´æÆðÀ´ÁË |
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