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Wish List - Tool "bandstrlab": Wish #498


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ronak abband

problem with nanowire bandstructure

i wanna simulate the silicon nanowire transistor bandstructure.its bandstructure should be symmetry and its domain must be from -3.14 to 3.14 . but when the bandstructure tools simulates,it give me the bulk silicon bandstructure.i men its not symmetry and its domain is from 0 to 5.78.and its wrong!!!

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  1. Saumitra Raj Mehrotra

    Hello Ronak,

    Thanks for using bandstructure lab.
    The results being generated using the bandstructure lab are correct.
    1. Because of symmetry, only 0-pi/a0 is simulated (as you also mentioned).
    2. If you look closely at the k-axis , the units are in (nm^-1). Hence the end of the BZ for Si nanowire will be pi/a0(in nm) = 3.14/0.5431 = 5.78. This is same as what is being displayed in the tool.
I believe this should help you in using the bandstructure lab tool.

thanks Saumitra

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  1. ronak abband

    Hello saumitra. I have another question: when I wanna simulate with bandstructurelab in this path :step1—>job type—>self-consistent wire band structure(1 bias point), I couldn’t give the answer.I wanna change the strain and tempreture and survey the si nanowire bandstructure. I send its error.could you help me please? ATTACHMENT: Incorrect file type.

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  • ronak abband

    thank you so much saumitra.your comment solves my problem.

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