Table 1

Four Dirac cones of BHZ model on square lattice

Dirac Points (DP)

Γ

X1

X2

M

DPδDP


= (kx, ky) at the DP

(0, 0)

(0, π/a)

(π/a, 0)

(π/a, π/a)


Mass gap

Δ

Δ - 4B

Δ - 4B

Δ - 8B


Chirality χ

+

-

-

+


Δ < 0

- (p)

+ (s)

+ (s)

- (p)

0

+1

0 < Δ < 4B

+ (s)

+ (s)

+ (s)

- (p)

2e2/h

-1

4B < Δ < 8B

+ (s)

- (p)

- (p)

- (p)

-2e2/h

-1

8B < Δ

+ (s)

- (p)

- (p)

+ (s)

0

+1


Imura et al. Nanoscale Research Letters 2011 6:358   doi:10.1186/1556-276X-6-358

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