Information of spin space group $I\ce{^{1}{4}}\ce{^{\text{-}1}{2}}\ce{^{\text{-}1}{2}}\ce{^{\infty m}{1}}$ ( nSSG:79.97.1.1 )

General Positions

The continuously infinite group ^∞1 is omitted.

Coordinates	Seitz symbol
a, b, c | x, y, z	{ 1 ‖ 1 | 0 }
-b, a, c | x, y, z	{ 1 ‖ 4+001 | 0 }
b, -a, c | x, y, z	{ 1 ‖ 4-001 | 0 }
-a, -b, c | x, y, z	{ 1 ‖ 2001 | 0 }
a, -b, -c | -x, -y, -z	{ -1 ‖ 2100 | 0 }
-a, b, -c | -x, -y, -z	{ -1 ‖ 2010 | 0 }
b, a, -c | -x, -y, -z	{ -1 ‖ 2110 | 0 }
-b, -a, -c | -x, -y, -z	{ -1 ‖ 21-10 | 0 }
a+1/2, b+1/2, c+1/2 | x, y, z	{ 1 ‖ 1 | 1/2 1/2 1/2 }
-b+1/2, a+1/2, c+1/2 | x, y, z	{ 1 ‖ 4+001 | 1/2 1/2 1/2 }
b+1/2, -a+1/2, c+1/2 | x, y, z	{ 1 ‖ 4-001 | 1/2 1/2 1/2 }
-a+1/2, -b+1/2, c+1/2 | x, y, z	{ 1 ‖ 2001 | 1/2 1/2 1/2 }
a+1/2, -b+1/2, -c+1/2 | -x, -y, -z	{ -1 ‖ 2100 | 1/2 1/2 1/2 }
-a+1/2, b+1/2, -c+1/2 | -x, -y, -z	{ -1 ‖ 2010 | 1/2 1/2 1/2 }
b+1/2, a+1/2, -c+1/2 | -x, -y, -z	{ -1 ‖ 2110 | 1/2 1/2 1/2 }
-b+1/2, -a+1/2, -c+1/2 | -x, -y, -z	{ -1 ‖ 21-10 | 1/2 1/2 1/2 }
a, b, c | -x, y, z	{ m ‖ 1 | 0 }
-b, a, c | -x, y, z	{ m ‖ 4+001 | 0 }
b, -a, c | -x, y, z	{ m ‖ 4-001 | 0 }
-a, -b, c | -x, y, z	{ m ‖ 2001 | 0 }
a, -b, -c | x, -y, -z	{ 2 ‖ 2100 | 0 }
-a, b, -c | x, -y, -z	{ 2 ‖ 2010 | 0 }
b, a, -c | x, -y, -z	{ 2 ‖ 2110 | 0 }
-b, -a, -c | x, -y, -z	{ 2 ‖ 21-10 | 0 }
a+1/2, b+1/2, c+1/2 | -x, y, z	{ m ‖ 1 | 1/2 1/2 1/2 }
-b+1/2, a+1/2, c+1/2 | -x, y, z	{ m ‖ 4+001 | 1/2 1/2 1/2 }
b+1/2, -a+1/2, c+1/2 | -x, y, z	{ m ‖ 4-001 | 1/2 1/2 1/2 }
-a+1/2, -b+1/2, c+1/2 | -x, y, z	{ m ‖ 2001 | 1/2 1/2 1/2 }
a+1/2, -b+1/2, -c+1/2 | x, -y, -z	{ 2 ‖ 2100 | 1/2 1/2 1/2 }
-a+1/2, b+1/2, -c+1/2 | x, -y, -z	{ 2 ‖ 2010 | 1/2 1/2 1/2 }
b+1/2, a+1/2, -c+1/2 | x, -y, -z	{ 2 ‖ 2110 | 1/2 1/2 1/2 }
-b+1/2, -a+1/2, -c+1/2 | x, -y, -z	{ 2 ‖ 21-10 | 1/2 1/2 1/2 }

Wyckoff Positions

WP	Site symmetry	Representative
2a	$\ce{^{1}{4}}\ce{^{-1}{2}}\ce{^{-1}{2}}\ce{^{\infty m}{1}} $	(0,0,0 | 0,0,0)
2b	$\ce{^{1}{4}}\ce{^{-1}{2}}\ce{^{-1}{2}}\ce{^{\infty m}{1}} $	(0,0,1/2 | 0,0,0)
4c	$\ce{^{1}{2}}\ce{^{-1}{2}}\ce{^{-1}{2}}.\ce{^{\infty m}{1}} $	(0,1/2,0 | 0,0,0)
4d	$\ce{^{1}{2}}.\ce{^{-1}{2}}\ce{^{-1}{2}}\ce{^{\infty m}{1}} $	(0,1/2,1/4 | 0,0,0)
4e	$\ce{^{1}{4}}..\ce{^{\infty m}{1}} $	(0,0,c | 0,0,z)
8f	$\ce{^{1}{2}}..\ce{^{\infty m}{1}} $	(0,1/2,c | 0,0,z)
8g	$..\ce{^{-1}{2}}\ce{^{\infty m}{1}} $	(a,a,0 | 0,0,0)
8h	$.\ce{^{-1}{2}}.\ce{^{\infty m}{1}} $	(a,0,0 | 0,0,0)
8i	$.\ce{^{-1}{2}}.\ce{^{\infty m}{1}} $	(a,0,1/2 | 0,0,0)
8j	$..\ce{^{-1}{2}}\ce{^{\infty m}{1}} $	(a,a+1/2,1/4 | 0,0,0)
16k	$\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
Γ:(0,0,0)	$\ce{^{1}{4}}\ce{^{-1}{2}}\ce{^{-1}{2}}\ce{^{\infty m}{1}} $
M:(1,1,1)	$\ce{^{1}{4}}\ce{^{-1}{2}}\ce{^{-1}{2}}\ce{^{\infty m}{1}} $
P:(1/2,1/2,1/2)	$\ce{^{m}{4}}\ce{^{2}{2}}\ce{^{-1}{2}}\ce{^{\infty}{1}} $
X:(1/2,1/2,0)	$\ce{^{2}{2}}\ce{^{2}{2}}\ce{^{1}{2}}\ce{^{\infty m}{1}} $
N:(1/2,0,1/2)	$\ce{^{2}{2}}\ce{^{\infty m}{1}} $
Λ:(0,0,w)	$\ce{^{1}{4}}\ce{^{-1}{2}}\ce{^{-1}{2}}\ce{^{\infty}{1}} $
Δ:(u,u,0)	$\ce{^{-1}{2}}\ce{^{2}{2}}\ce{^{m}{2}}\ce{^{\infty}{1}} $
Q:(1/2,v,1/2)	$\ce{^{2}{2}}\ce{^{\infty}{1}} $
Σ:(u,0,0)	$\ce{^{2}{2}}\ce{^{-1}{2}}\ce{^{m}{2}}\ce{^{\infty}{1}} $
W:(1/2,1/2,w)	$\ce{^{-1}{2}}\ce{^{-1}{2}}\ce{^{1}{2}}\ce{^{\infty}{1}} $
Y:(u,1-u,0)	$\ce{^{2}{2}}\ce{^{-1}{2}}\ce{^{m}{2}}\ce{^{\infty}{1}} $
A:(u,u,w)	$\ce{^{-1}{2}}\ce{^{\infty}{1}} $
B:(u,0,w)	$\ce{^{-1}{2}}\ce{^{\infty}{1}} $
C:(u,v,0)	$\ce{^{m}{2}}\ce{^{\infty}{1}} $
GP:(u,v,w)	$\ce{^{1}{1}}\ce{^{\infty}{1}} $

Spin Brillouin Zone

Band Representations (Magnon)

4e

k-vector	k-vector-G↑	A↑G(2)
Γ:(0,0,0)	Γ:(0,0,0)	$Γ_{1}^{S}(2) $
M:(1,1,1)	M:(1,1,1)	$M_{1}^{S}(2) $
N:(1/2,0,1/2)	N:(1/2,0,1/2)	$N_{1}^{S}(2) $
P:(1/2,1/2,1/2)	P:(1/2,1/2,1/2)	$P_{1}^{S}(2) $
X:(1/2,1/2,0)	X:(1/2,1/2,0)	$X_{1}^{S}(2) $
Δ:(u,u,0)	Δ:(u,u,0)	$Δ_{1}^{S}(2) $
Λ:(0,0,w)	Λ:(0,0,w)	$Λ_{1}^{S}(2) $
Q:(1/2,v,1/2)	Q:(1/2,v,1/2)	$Q_{1}^{S}(2) $
Σ:(u,0,0)	Σ:(u,0,0)	$Σ_{1}^{S}(2) $
W:(1/2,1/2,w)	W:(1/2,1/2,w)	$W_{1}^{S}(2) $
Y:(u,1-u,0)	Y:(u,1-u,0)	$Y_{1}^{S}(2) $
A:(u,u,w)	A:(u,u,w)	$A_{1}^{S}(2) $
B:(u,0,w)	B:(u,0,w)	$B_{1}^{S}(2) $
C:(u,v,0)	C:(u,v,0)	$2 C_{1}^{S}(1)$	Spin Splitting
GP:(u,v,w)	GP:(u,v,w)	$2 GP_{1}^{S}(1)$	Spin Splitting

8f

k-vector	k-vector-G↑	A↑G(4)
Γ:(0,0,0)	Γ:(0,0,0)	$Γ_{1}^{S}(2)⊕Γ_{2}^{S}(2) $
M:(1,1,1)	M:(1,1,1)	$M_{1}^{S}(2)⊕M_{2}^{S}(2) $
N:(1/2,0,1/2)	N:(1/2,0,1/2)	$2N_{1}^{S}(2) $
P:(1/2,1/2,1/2)	P:(1/2,1/2,1/2)	$P_{2}^{S}P_{2}^{S}(4) $
X:(1/2,1/2,0)	X:(1/2,1/2,0)	$2X_{2}^{S}(2) $
Δ:(u,u,0)	Δ:(u,u,0)	$2Δ_{1}^{S}(2) $
Λ:(0,0,w)	Λ:(0,0,w)	$Λ_{1}^{S}(2)⊕Λ_{2}^{S}(2) $
Q:(1/2,v,1/2)	Q:(1/2,v,1/2)	$2Q_{1}^{S}(2) $
Σ:(u,0,0)	Σ:(u,0,0)	$2Σ_{1}^{S}(2) $
W:(1/2,1/2,w)	W:(1/2,1/2,w)	$2W_{2}^{S}(2) $
Y:(u,1-u,0)	Y:(u,1-u,0)	$2Y_{1}^{S}(2) $
A:(u,u,w)	A:(u,u,w)	$2A_{1}^{S}(2) $
B:(u,0,w)	B:(u,0,w)	$2B_{1}^{S}(2) $
C:(u,v,0)	C:(u,v,0)	$4C_{1}^{S}(1)$	Spin Splitting
GP:(u,v,w)	GP:(u,v,w)	$4GP_{1}^{S}(1)$	Spin Splitting

16k

k-vector	k-vector-G↑	A↑G(8)
Γ:(0,0,0)	Γ:(0,0,0)	$Γ_{1}^{S}(2)⊕Γ_{2}^{S}(2)⊕Γ_{3}^{S}Γ_{4}^{S}(4) $
M:(1,1,1)	M:(1,1,1)	$M_{1}^{S}(2)⊕M_{2}^{S}(2)⊕M_{3}^{S}M_{4}^{S}(4) $
N:(1/2,0,1/2)	N:(1/2,0,1/2)	$4N_{1}^{S}(2) $
P:(1/2,1/2,1/2)	P:(1/2,1/2,1/2)	$2P_{1}^{S}(2)⊕P_{2}^{S}P_{2}^{S}(4) $
X:(1/2,1/2,0)	X:(1/2,1/2,0)	$2X_{1}^{S}(2)⊕2X_{2}^{S}(2) $
Δ:(u,u,0)	Δ:(u,u,0)	$4Δ_{1}^{S}(2) $
Λ:(0,0,w)	Λ:(0,0,w)	$Λ_{1}^{S}(2)⊕Λ_{2}^{S}(2)⊕Λ_{3}^{S}(2)⊕Λ_{4}^{S}(2) $
Q:(1/2,v,1/2)	Q:(1/2,v,1/2)	$4Q_{1}^{S}(2) $
Σ:(u,0,0)	Σ:(u,0,0)	$4Σ_{1}^{S}(2) $
W:(1/2,1/2,w)	W:(1/2,1/2,w)	$2W_{1}^{S}(2)⊕2W_{2}^{S}(2) $
Y:(u,1-u,0)	Y:(u,1-u,0)	$4Y_{1}^{S}(2) $
A:(u,u,w)	A:(u,u,w)	$4A_{1}^{S}(2) $
B:(u,0,w)	B:(u,0,w)	$4B_{1}^{S}(2) $
C:(u,v,0)	C:(u,v,0)	$8C_{1}^{S}(1)$	Spin Splitting
GP:(u,v,w)	GP:(u,v,w)	$8GP_{1}^{S}(1)$	Spin Splitting