期刊
PHYSICAL REVIEW B
卷 89, 期 7, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.89.075430
关键词
-
资金
- RFBR
- Dynasty Foundation
- RF [NSh-1085.2014.2]
- EU project POLAPHEN
We propose a 14-band k . p model to calculate spin-orbit splittings of the valence subbands in semiconductor quantum wells. The reduced symmetry of quantum well interfaces is incorporated by means of additional terms in the boundary conditions which mix the Gamma(15) conduction and valence Bloch functions at the interfaces. It is demonstrated that the interface-induced effect makes the dominating contribution to the heavy-hole spin splitting. A simple analytical expression for the interface contribution is derived. In contrast to the 4 x 4 effective Hamiltonian model, where the problem of treating the V(z)k(z)(3) term seems to be unsolvable, the 14-band model naturally avoids and overcomes this problem. Our results are in agreement with the recent atomistic calculations [Luo et al., Phys. Rev. Lett. 104, 066405 (2010)].
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据