Information of spin space group $P\ce{^{1}{2_{1}/}}\ce{^{1}{m}}\ce{^{\text{-}1}{(0 \ 1/2 \ 0)}}\ce{^{\infty m}{1}}$ ( nSSG:11.10.2.1 )

General Positions

The continuously infinite group ^∞1 is omitted.

Coordinates	Seitz symbol
a, b, c | x, y, z	{ 1 ‖ 1 | 0 }
-a, b+1/2, -c | x, y, z	{ 1 ‖ 2010 | 0 1/2 0 }
-a, -b, -c | x, y, z	{ 1 ‖ -1 | 0 }
a, -b+1/2, c | x, y, z	{ 1 ‖ m010 | 0 1/2 0 }
a, b+1/2, c | -x, -y, -z	{ -1 ‖ 1 | 0 1/2 0 }
-a, b, -c | -x, -y, -z	{ -1 ‖ 2010 | 0 }
-a, -b+1/2, -c | -x, -y, -z	{ -1 ‖ -1 | 0 1/2 0 }
a, -b, c | -x, -y, -z	{ -1 ‖ m010 | 0 }
a, b, c | -x, y, z	{ m ‖ 1 | 0 }
-a, b+1/2, -c | -x, y, z	{ m ‖ 2010 | 0 1/2 0 }
-a, -b, -c | -x, y, z	{ m ‖ -1 | 0 }
a, -b+1/2, c | -x, y, z	{ m ‖ m010 | 0 1/2 0 }
a, b+1/2, c | x, -y, -z	{ 2 ‖ 1 | 0 1/2 0 }
-a, b, -c | x, -y, -z	{ 2 ‖ 2010 | 0 }
-a, -b+1/2, -c | x, -y, -z	{ 2 ‖ -1 | 0 1/2 0 }
a, -b, c | x, -y, -z	{ 2 ‖ m010 | 0 }

Wyckoff Positions

WP	Site symmetry	Representative
2a	$\ce{^{-1}{2}}/\ce{^{1}{m}}\ce{^{\infty m}{1}} $	(0,3/4,0 | 0,0,0)
2b	$\ce{^{-1}{2}}/\ce{^{-1}{m}}\ce{^{\infty m}{1}} $	(0,0,0 | 0,0,0)
2c	$\ce{^{-1}{2}}/\ce{^{1}{m}}\ce{^{\infty m}{1}} $	(0,3/4,1/2 | 0,0,0)
2d	$\ce{^{-1}{2}}/\ce{^{1}{m}}\ce{^{\infty m}{1}} $	(1/2,3/4,0 | 0,0,0)
2e	$\ce{^{-1}{2}}/\ce{^{-1}{m}}\ce{^{\infty m}{1}} $	(1/2,0,0 | 0,0,0)
2f	$\ce{^{-1}{2}}/\ce{^{-1}{m}}\ce{^{\infty m}{1}} $	(0,0,1/2 | 0,0,0)
2g	$\ce{^{-1}{2}}/\ce{^{1}{m}}\ce{^{\infty m}{1}} $	(1/2,3/4,1/2 | 0,0,0)
2h	$\ce{^{-1}{2}}/\ce{^{-1}{m}}\ce{^{\infty m}{1}} $	(1/2,0,1/2 | 0,0,0)
4i	$\ce{^{-1}{2}}\ce{^{\infty m}{1}} $	(0,b,0 | 0,0,0)
4j	$\ce{^{-1}{2}}\ce{^{\infty m}{1}} $	(1/2,b,0 | 0,0,0)
4k	$\ce{^{-1}{2}}\ce{^{\infty m}{1}} $	(0,b,1/2 | 0,0,0)
4l	$\ce{^{-1}{2}}\ce{^{\infty m}{1}} $	(1/2,b,1/2 | 0,0,0)
4m	$\ce{^{1}{m}}\ce{^{\infty m}{1}} $	(a,3/4,c | 0,0,z)
4n	$\ce{^{-1}{m}}\ce{^{\infty m}{1}} $	(a,0,c | 0,0,0)
8o	$\ce{^{1}{1}}\ce{^{\infty m}{1}} $	(a,b,c | 0,0,z)

Spin Brillouin Zone & k-little co-groups

Wavevector-k	Little co-group
A:(1/2,0,1/2)	$\ce{^{1}{2/}}\ce{^{1}{m}}\ce{^{\infty /mm}{1}} $
B:(0,0,1/2)	$\ce{^{1}{2/}}\ce{^{1}{m}}\ce{^{\infty /mm}{1}} $
C:(1/2,1/2,0)	$\ce{^{1}{2/}}\ce{^{1}{m}}\ce{^{\infty /mm}{1}} $
D:(0,1/2,1/2)	$\ce{^{1}{2/}}\ce{^{1}{m}}\ce{^{\infty /mm}{1}} $
E:(1/2,1/2,1/2)	$\ce{^{1}{2/}}\ce{^{1}{m}}\ce{^{\infty /mm}{1}} $
Γ:(0,0,0)	$\ce{^{1}{2/}}\ce{^{1}{m}}\ce{^{\infty /mm}{1}} $
Y:(1/2,0,0)	$\ce{^{1}{2/}}\ce{^{1}{m}}\ce{^{\infty /mm}{1}} $
Z:(0,1/2,0)	$\ce{^{1}{2/}}\ce{^{1}{m}}\ce{^{\infty /mm}{1}} $
F:(u,0,w)	$\ce{^{m}{2/}}\ce{^{1}{m}}\ce{^{\infty 2}{1}} $
G:(u,1/2,w)	$\ce{^{m}{2/}}\ce{^{1}{m}}\ce{^{\infty 2}{1}} $
Λ:(0,v,0)	$\ce{^{1}{2/}}\ce{^{m}{m}}\ce{^{\infty 2}{1}} $
U:(1/2,v,1/2)	$\ce{^{1}{2/}}\ce{^{m}{m}}\ce{^{\infty 2}{1}} $
V:(0,v,1/2)	$\ce{^{1}{2/}}\ce{^{m}{m}}\ce{^{\infty 2}{1}} $
W:(1/2,v,0)	$\ce{^{1}{2/}}\ce{^{m}{m}}\ce{^{\infty 2}{1}} $
GP:(u,v,w)	$\ce{^{m}{-1}}\ce{^{\infty 2}{1}} $

Spin Brillouin Zone

Band Representations (Magnon)

4m

k-vector	A'↑G(4)
A:(1/2,0,1/2)	$A_{1}^{S,+}(2)⊕A_{2}^{S,-}(2) $
B:(0,0,1/2)	$B_{1}^{S,+}(2)⊕B_{2}^{S,-}(2) $
C:(1/2,1/2,0)	$C_{1}^{S}(4) $
D:(0,1/2,1/2)	$D_{1}^{S}(4) $
E:(1/2,1/2,1/2)	$E_{1}^{S}(4) $
Γ:(0,0,0)	$Γ_{1}^{S,+}(2)⊕Γ_{2}^{S,-}(2) $
Y:(1/2,0,0)	$Y_{1}^{S,+}(2)⊕Y_{2}^{S,-}(2) $
Z:(0,1/2,0)	$Z_{1}^{S}(4) $
F:(u,0,w)	$2F_{1}^{S}(2) $
G:(u,1/2,w)	$G_{1}^{S}G_{2}^{S}(4) $
Λ:(0,v,0)	$Λ_{1}^{S}(2)⊕Λ_{2}^{S}(2) $
U:(1/2,v,1/2)	$U_{1}^{S}(2)⊕U_{2}^{S}(2) $
V:(0,v,1/2)	$V_{1}^{S}(2)⊕V_{2}^{S}(2) $
W:(1/2,v,0)	$W_{1}^{S}(2)⊕W_{2}^{S}(2) $
GP:(u,v,w)	$2GP_{1}^{S}(2) $

8o

k-vector	A↑G(8)
A:(1/2,0,1/2)	$A_{1}^{S,+}(2)⊕A_{1}^{S,-}(2)⊕A_{2}^{S,+}(2)⊕A_{2}^{S,-}(2) $
B:(0,0,1/2)	$B_{1}^{S,+}(2)⊕B_{1}^{S,-}(2)⊕B_{2}^{S,+}(2)⊕B_{2}^{S,-}(2) $
C:(1/2,1/2,0)	$2C_{1}^{S}(4) $
D:(0,1/2,1/2)	$2D_{1}^{S}(4) $
E:(1/2,1/2,1/2)	$2E_{1}^{S}(4) $
Γ:(0,0,0)	$Γ_{1}^{S,+}(2)⊕Γ_{1}^{S,-}(2)⊕Γ_{2}^{S,+}(2)⊕Γ_{2}^{S,-}(2) $
Y:(1/2,0,0)	$Y_{1}^{S,+}(2)⊕Y_{1}^{S,-}(2)⊕Y_{2}^{S,+}(2)⊕Y_{2}^{S,-}(2) $
Z:(0,1/2,0)	$2Z_{1}^{S}(4) $
F:(u,0,w)	$2F_{1}^{S}(2)⊕2F_{2}^{S}(2) $
G:(u,1/2,w)	$2G_{1}^{S}G_{2}^{S}(4) $
Λ:(0,v,0)	$2Λ_{1}^{S}(2)⊕2Λ_{2}^{S}(2) $
U:(1/2,v,1/2)	$2U_{1}^{S}(2)⊕2U_{2}^{S}(2) $
V:(0,v,1/2)	$2V_{1}^{S}(2)⊕2V_{2}^{S}(2) $
W:(1/2,v,0)	$2W_{1}^{S}(2)⊕2W_{2}^{S}(2) $
GP:(u,v,w)	$4GP_{1}^{S}(2) $