Tuning a double quantum well Fermi surface with in-plane magnetic fields

SURFACE SCIENCE

卷:361

Article; Proceedings Paper

关键词: conductivity;    electrical transport measurements;    gallium arsenide;    magnetic phenomena;    quantum wells;    tunneling;   

DOI  :  10.1016/0039-6028(96)00353-6

来源: Elsevier

【 摘 要 】

A double quantum well (QW) subject to in-plane magnetic fields B-parallel to has the dispersion curves of its two QWs shifted in k-space. When the QWs are strongly coupled, an anticrossing and partial energy gap occur, yielding a turnable multi-component Fermi surface. We report measurements of the resultant features in the conductance, the capacitive density of states and giant deviations in the cyclotron effective masses.

【 授权许可】

Free