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CCoO6 Co
Ba3Co2O6(CO3)0.7
c=9.518 a=b=9.683
cccccccccccccccccccccccccccccc
Ba326のARPES 2014/4/7 Progress Report Ito
CoO6
K. Igarashi et al. , J. Phys.: Conf. Ser. 400,
032024 (2012).
// ( ) Ba3Co2O6(CO3)0.7
3D ARPES endstation @BL5U UVSOR-III
Ba3Co2O6(CO3)0.7
θa*
b´
a c
hν
c*
c*
b´*
Σ
Γ
M
Δ
U
T
ΓΓΓMM
AAAA
* L L
H HK
L
AAAAAAL
H HK
MMMΓ
LLLLALLLLLL
A
c*
Δ
c*
U
b´*
T
a*
Σ
c*
Δ
c*
U
b´*
T
a*
Σ
******************
一次元金属鎖 一次元半導体鎖
c*EF
kF kF
c*EF
VBM
(VB)
kVBM kVBM
V0
ρΔE//=5.4meV
300 200 100 EF -100 Binding Energy (meV)
20~30meV ΔE( )
EFEF
20meV
c* U
300 200 100 EF -100 Binding Energy (meV)
c* U
Ba3Co2O6(CO3)0.7CoO6
ΔTCO3
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