Structure of two-dimensional subbands on (111) Ge in MIS structures
Dolgopolov V. T. , Zhitenev N. B.
The Shubnikov-de Haas oscillations in the curves (daxx/dVg){H) for (111) Ge in MIS structures were measured up to electron densities of Ns = 5.4 Χ 1012 cm~2 in the two-dimensional layer. It is shown that the curves of the electron-density dependence of the positions of the peaks in the oscillations with respect to the magnetic field have a break at Ns = 2.8 + 0.4) χ 1012 cm"2. It is suggested that the break is caused by the filling of the subbands S '0.
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![](/ps/1256/article_18984_800_head.png "The Shubnikov-de Haas oscillations in the curves <i>(da<sub>xx</sub>/dV<sub>g</sub>){H) </i>for (111) Ge in MIS structures were measured up to electron densities of <i>N<sub>s</sub> </i>= 5.4 Χ 10<sup>12</sup> cm~<sup>2</sup> in the two-dimensional layer. It is shown that the curves of the electron-density dependence of the positions of the peaks in the oscillations with respect to the magnetic field have a break at <i>N<sub>s</sub> </i>= 2.8 + 0.4) χ 10<sup>12</sup> cm"<sup>2</sup>. It is suggested that the break is caused by the filling of the subbands <i>S '<sub>0</sub>.</i>")