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matematikuvol
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In quantum Heisenberg model
[tex]\hat{H}=-J\sum_{\vec{n},\vec{m}}\hat{\vec{S}}_{\vec{n}}\cdot \hat{\vec{S}}_{\vec{m}}[/tex]
##J## can be obtained from dispersion experiment. For large spin ##S## even classical Heisenberg model is good for description of Curie temperature for example. Is that with the same ##J## which is obtained from dispersion law? Thanks for the answer! Maybe you know some reference.
[tex]\hat{H}=-J\sum_{\vec{n},\vec{m}}\hat{\vec{S}}_{\vec{n}}\cdot \hat{\vec{S}}_{\vec{m}}[/tex]
##J## can be obtained from dispersion experiment. For large spin ##S## even classical Heisenberg model is good for description of Curie temperature for example. Is that with the same ##J## which is obtained from dispersion law? Thanks for the answer! Maybe you know some reference.
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