Dear teacher! I am interested in the magnetic simulation by using SSE package. I have a system of the cluster, including six cobalt. The hamiltonian is as follow: H=-2{J1*[ S1*S2 + S4*S5 ] + J2*[ S2*S3 + S6*S5 ] + J3*[ S3*S4 + S1*S6 ]} How do I write the model? I have read the model.xml file in the ALPS software. But the example is almost infinite system, but not isolate system in the file. Please help me!
First, you have to define your 6-site lattice (or graph). Please see
https://alps.ethz.ch/mediawiki/index.php/Tutorials:LatticeHOWTO:SimpleGraphs
In the lattice definition, you can specify a "type" for each bond. (see "colored graph" example in the tutorial.)
Then, in the parameter file, you can assign different coupling constants for different types, e.g.
MODEL = "spin" J0 = 1.0 // coupling constant for bonds of type 0 J1 = 2.0 J2 = 0.5
Synge
On 2009/03/10, at 19:04, Guilin Zhuang wrote:
Dear teacher! I am interested in the magnetic simulation by using SSE package. I have a system of the cluster, including six cobalt. The hamiltonian is as follow: H=-2{J1*[ S1*S2 + S4*S5 ] + J2*[ S2*S3 + S6*S5 ] + J3*[ S3*S4 + S1*S6 ]} How do I write the model? I have read the model.xml file in the ALPS software. But the example is almost infinite system, but not isolate system in the file. Please help me!
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