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Table 4 The defect migration barrier in bulk Si, Ge, and Si/Ge superlattice. V X : X vacancy (X = Si or Ge)

From: A Theoretical Simulation of the Radiation Responses of Si, Ge, and Si/Ge Superlattice to Low-Energy Irradiation

Defect type

Direction

Migration barrier (eV)

  

Si/Ge SL

Bulk Ge

Bulk Si

VSi

[100]

3.92

4.32

[110]

2.14

2.12, 2.85a

[111]

0.49

0.11

VGe

[100]

2.87

3.67

[110]

1.39

1.94, 2.1a

[111]

0.61

0.14

  1. aRef. [41]

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