Moire potential depth from continuum model

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Shena
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Calculating Moire potential depth using Continuum model
Dear All,

I am trying to calculate the moire potential depth of transition metal dichalcogenide system.
I have attached supporting material obtained from one of the thesis. Here they have describe the continuum model hamiltonian for TMDs homobilayer.
My question is how to obtain the moire potential.
1. Interlayer moire potential
2. Intralayer moire potential

In this chapter it says the diagonal term of the T l1l2 gives the moire potential.
It is not very clear to me. I'm trying to calculate the moire potential depth of this system
 

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