Re: [SIESTA-L] IV characteristics

2012-04-13 Por tôpico Juan Manuel Aguiar
Dear Gabriele, It's very likely as you said. I took a (12,0) 5 layers long for the system and a 1 layer long for leads; I expected not have neglegible effect for a bias of 0.4 V and be able to cunclude if running transiesta is necessary or not. I should admit that I thought this comparison would be

Re: [SIESTA-L] IV characteristics

2012-04-13 Por tôpico Gabriele Penazzi
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

Re: [SIESTA-L] IV characteristics

2012-04-12 Por tôpico Juan Manuel Aguiar
___ > Guangping Zhang > > 发件人:Juan Manuel Aguiar > 发送时间:2012-04-12 22:52 > 主题:[SIESTA-L] IV characteristics > 收件人:"siesta-l" > 抄送: > > Dear Siesta Users, > I have a very simple question for those regular users of transiesta &g

Re: [SIESTA-L] IV characteristics

2012-04-12 Por tôpico Guangping Zhang
the results by e/h. Guangping 2012-04-13 Guangping Zhang 发件人:Juan Manuel Aguiar 发送时间:2012-04-12 22:52 主题:[SIESTA-L] IV characteristics 收件人:"siesta-l" 抄送: Dear Siesta Users, I have a very simple question for those regular users of transiesta and tbtrans: for plotting IV characteris

[SIESTA-L] IV characteristics

2012-04-12 Por tôpico Juan Manuel Aguiar
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 tbt