Table 1 Parameters for the simulation.

From: The role of ion transport phenomena in memristive double barrier devices

Physical quantity

Value

Temperature

300 K

Phonon frequency

1.0 × 1012 Hz

Lattice constant (x, y) (NbxOy)

3.3 × 10−10 m

Lattice constant (z) (NbxOy)

2.5 × 10−10 m

Relative permittivity (Al2O3)

9

Relative permittivity (NbxOy)

42

Conductivity (NbxOy)

2 × 10−4

Eij for ion diffusion

0.68 eV

Eij for desorption

0.25 eV

Eij for adsorption

0.71 eV

Defect density n

5 × 1020

Tunnel barrier height Φ0

3.1 eV