pair_style and integration nvt or nve

Submitted by rasoul on Wed, 08/21/2013 - 14:55

I have a question about pair_style. I'd like to simulate solid materials such as shale, clay, sand, and like this. I need to know what the appropriate pair_style for doing that is?

Another question is about integration. In my project I have to decrease temperature from X1 to X2. How can I do that?
And using "fix integer nvt/sphere temp X1 X2 DX" is true or not?

Thanks a lot for the response in advance.