Table 1 Model parameters.

From: Gated silicene as a tunable source of nearly 100% spin-polarized electrons

 

a

Δ c

t

λ SO

λ R

l

 

(Ã…)

(Ã…)

(eV)

(meV)

(meV)

(e Ã…)

Si

3.87

0.44

1.04

4.2

8.66

0.035

Ge

4.06

0.68

0.97

11.8

2.81

0.046

Sn

4.67

0.84

0.76

36.0

18.75

0.055

Pb

4.93

0.89

0.72

207.3

0.06

0.143

  1. Fitting results from first-principles calculations for stand-alone, two-dimensional Si, Ge, Sn and Pb sheets. Relevant parameters are lattice constant (a) with buckled structure, buckling distance (Δc), transfer energy (t), spin-orbit coupling (λSO), Rashba spin-orbit coupling (λR), and the linear dependence of the applied electric field on λV (l≡λV/Ez).
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