Hi

I simple want to write a script for 2d square lattice, with AFM Heisenberg interaction on nearest and next nearest neighbor bonds.

How do I know if naming them respectively J0, and J1  (both AFM) should work or not? If I name them instead J1 and J2 should that work?

My input file presently looks like:

parms.append(
        {
          'LATTICE'        : "frustrated square lattice",
          'T'              : t,
          'J0'             : -1 ,
          'J1'             : -0.5 ,
          'THERMALIZATION' : 10000,
          'SWEEPS'         : 500000,
          'UPDATE'         : "cluster",
          'MODEL'          : "Heisenberg",
          'L'              : 8,
          'W'              : 8
        }
    )

I want NN J to be 1.0 and NNN J to be 0.5. Is that going in properly?

The term "frustrated" in front of "square lattice", should that be necessary? What would be the extension of the name for the lattice when I do a cubic lattice, say, with J1 (NN), J2 (NNN), J3(NNNN)? How do I know in that case which direction is preferentially x, y and z?   Thanks in advance for all the replies.

Swagata



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Swagata Acharya

Dept. of Physics and Meteorology
IIT Kharagpur
B C Roy Hall of Residence
Room NW 204
Mob: +91 9836893829

         +91 9088377636

Volunteer : Padakshep , Vivekananda Study Circle
Secretary: Padakshep(www.padakshep.org)
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