实空间平均场

H = H 0 + H B + H I
H 0 = i , j J x ( f i j + + f i j ) ( f i + 1 , j + 1 + f i + 1 , j + 1 ) + J y ( f i j + + f i j ) ( f i + 1 , j + f i + 1 , j ) + σ J z ( 2 f i j + f i j 1 )
( f l u x = 1 : σ = 1 , f l u x = 1 : f o r   i = 0 , j > 0 , σ = 1. )
H B = J x ( f 0 , 0 + + f 0 , 0 ) ( f 1 , 1 + f 1 , 1 ) ( 2 χ x + χ x 1 ) + J y ( f 0 , 0 + + f 0 , 0 ) ( f 1 , 0 + f 1 , 0 ) ( 2 χ y + χ y 1 ) + J z ( 2 f 0 , 0 + f 0 , 0 1 ) ( 2 χ z + χ z 1 )
H I = S x ( f 0 + + f 0 ) ( χ x + + χ x ) + S y ( f 0 + + f 0 ) ( χ y + + χ y ) + S z ( f 0 + + f 0 ) ( χ z + + χ z )

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转载自blog.csdn.net/qq_41584674/article/details/80421624