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General Questions and Answers / Re: Question about calcutaing the current by transmission spectrum?
« on: May 28, 2012, 11:28 »
You are very helpful, I got it, thanks a lot~~
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General Questions and Answers / Re: Question about calcutaing the current by transmission spectrum?
« on: May 28, 2012, 09:34 »
I catch your mean, but my point in this case is why the first current and the second current are so different, since they are under the same bias. Further more, if different, according the formula for current calculation the second current should be small than the first but the results here are just the opposite.
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General Questions and Answers / Re: Question about calcutaing the current by transmission spectrum?
« on: May 27, 2012, 17:28 »
You are right, it should be (-2,2,201), the enegy point is different, but transmission spectrum is almost the same. Temperature is fixed to 300K, if it just belongs to numerical error, how can I correct this error?
appreciated
appreciated
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General Questions and Answers / Re: Question about calcutaing the current by transmission spectrum?
« on: May 27, 2012, 09:54 »
This script is used by the first calculation. The only difference among scripts of 3 calculations is the energy's category for integrating.
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General Questions and Answers / Question about calcutaing the current by transmission spectrum?
« on: May 27, 2012, 06:31 »
hello, I have a question here, why there is so huge difference about the current below:
bias=0.1V, same finished self-consistent consequence;
the first time calculating the transmission : TransmissionSpectrum(energies=numpy.linspace(-2,2,200)*eV), result:i=9.072968369e-15A;
the second time calculating the transmission:TransmissionSpectrum(energies=numpy.linspace(-0.05,0.05,200)*eV),result:i=4.777585453e-12A;
and I took an another test:TransmissionSpectrum(energies=numpy.linspace(-0.05,0.05,6)*eV), the energy interval is same with the first,
result:i=5.609325372e-12A.
The question puzzling me is why the second current is larger than the first since the second's enegies scope is less small? Isn't the integrating equal to the add of areas?
bias=0.1V, same finished self-consistent consequence;
the first time calculating the transmission : TransmissionSpectrum(energies=numpy.linspace(-2,2,200)*eV), result:i=9.072968369e-15A;
the second time calculating the transmission:TransmissionSpectrum(energies=numpy.linspace(-0.05,0.05,200)*eV),result:i=4.777585453e-12A;
and I took an another test:TransmissionSpectrum(energies=numpy.linspace(-0.05,0.05,6)*eV), the energy interval is same with the first,
result:i=5.609325372e-12A.
The question puzzling me is why the second current is larger than the first since the second's enegies scope is less small? Isn't the integrating equal to the add of areas?
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