Research Article

On the Problem of Metal-Insulator Transitions in Vanadium Oxides

Table 1

The effective Bohr radius and the critical carrier density for an MIT in some compounds (numbers of rows in the table correspond to numbers of points in Figure 2).

No.Material , nm , 1017 cm−3References

1Si : P1.3530[7, 10]
2Si : B1.4141
3Si : Bi0.88140
4Ge : Sb4.741.5
5n-GaAs9.670.12
6n-InSb57.70.001
7CdS : In3.52.5
8CdS : Cl3.39.9
9GaP : Zn1.1130
10Cu : Ar0.09
11YBa2Cu3O70.451800
12NH3 : Na0.8340

13VO21.828[7, 12]

14V2O31.18100[7]

15V2O3 (AFI)~1.20.021[7]

16SmS0.73(*)700 [15, 16][1518]

17 0.9730[19]

For [17] and [18].