Dear Juan Manuel, Guanping explanation is right. I would say in general, it should be the same whether the local charges in the system don't change significantly under bias. This is more likely to happen in a system like a CNT than, for example, in a single molecule device, where you should start to see relevant different already for a small bias. So there's not really a yes or no answer, it actually depends on your system
Regards, Gabriele Penazzi On 04/12/2012 04:52 PM, Juan Manuel Aguiar wrote: > Dear Siesta Users, > I have a very simple question for those regular users of transiesta > and tbtrans: for plotting IV characteristics; do I have to run > transiesta for every bias? > I've done a test with a small system (a single wall CNT) and I found > no difference between running transiesta and then tbtrans for every > bias or just running transiesta for 0 bias and then tbtrans for all > the bias values. > I think that this question is answerd easyly: yes or no. Let me know > if I had to deliver details of the calculation I expect to do. > > Juan Manuel
