Extracting the hamiltonian for an unit cell of a Nanowire

[dibakariitm]

Hi,

I am new to Quantumwise and as a part of my research work I need to construct  a germanium nanowire oriented in <110> direction. To this end, I have gone through the tutorials for Silicon and InAs nanowires.

 Can someone suggest a way to construct a nanowire oriented in some arbitrary directions for any general material and also how to extract the tight-binding hamiltonian for an unit cell of such a nanowire. Thanks in advance.

Regards,
Dibakar

[kstokbro]

To construct a nanowire in arbitrary directions, in the builder open builders->nanowire . It use the Wulff construction to setup the nanowire geometry. 

To get out the hamiltonian, see the tutorial:
http://quantumwise.com/documents/tutorials/latest/LowLevelEntities/index.html/

[debashishdashnits]

I think, we can also build nanowire by surface cleve in a arbitrary direction...

[Jess Wellendorff]

In principle, yes. But the Nanowire tool allows you to specify the surface energy of the crystal facets, such that the relative size of the those facets on the nanowire become correct.