Reflection of light and heavy holes from a linear potential barrier

Details Reflection of light and heavy holes from a linear potential barrier Reflection of light and heavy holes from a linear potential barrier

2000-05-14

arxiv.org/abs/cond-mat/0005229v3

Phys. Rev. B 62, 16566 (2000)

Physics

Condensed Matter

Materials Science

6 pages, 2 figures

Scientific paper

10.1103/PhysRevB.62.16566

In this paper we study reflection of holes in direct-band semiconductors from the linear potential barrier. It is shown that light-heavy hole transformation matrix is universal. It depends only on a dimensionless product of the light hole longitudinal momentum and the characteristic length determined by the slope of the potential and doesn't depend on the ratio of light and heavy hole masses, provided this ratio is small. It is shown that the transformation coefficient goes to zero both in the limit of small and large longitudinal momenta, however the phase of a reflected hole is different in these limits. An approximate analytical expression for the light-heavy hole transformation coefficient is found.

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