Vampire¶
Status |
Draft |
Links |
|
Languages |
C++ |
Spin Hamiltonian¶
\[\mathcal{H}
=
-\mu_S
\sum_i
\mathbf{B}
\cdot
\mathbf{S}_i
-
\sum_{i<j (?)}
\mathbf{S}_i
\cdot
\mathbf{J}_{ij}
\cdot
\mathbf{S}_j
+(?)
\sum_{i<j(?)}
\mathbf{B}_{ij}
\left(
\mathbf{S}_i
\cdot
\mathbf{S}_j
\right)^2
+
(?)\]
where \(\mu_S\) is (?), \(\mathbf{B}\) is the external magnetic field, \(\mathbf{J}_{ij}\) is full exchange tensor, \(\mathbf{B}_{ij}\) is biquadratic exchange parameter.
Convention¶
Spin normalized |
yes(?) |
Multiple counting |
no(?) |