Direct observation of $\Gamma - X$ energy spectrum transition in narrow AlAs quantum wells

Spectra of magnetoplasma excitations have been investigated in a two-dimensional electron systems in AlAs quantum wells (QWs) of different widths. The magnetoplasma spectrum have been found to change profoundly when the quantum well width became thinner than $5.5$ ~nm, indicating a drastic change in the conduction electron energy spectrum. The transformation can be interpreted in terms of transition from the in-plane strongly anisotropic $X_x

X_y $v a l l e y o c c u p a t i o n t o t h e o u t - o f - p l a n e i s o t r o p i c$ X_z$ valley in the QW plane. Strong enhancement of the cyclotron effective mass over the band value in narrow AlAs QWs is reported.

X_y $v a l l e y o c c u p a t i o n t o t h e o u t - o f - p l a n e i s o t r o p i c$ X_z$ valley in the QW plane. Strong enhancement of the cyclotron effective mass over the band value in narrow AlAs QWs is reported.

Direct observation of $Γ - X$ energy spectrum transition in narrow AlAs quantum wells

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Direct observation of $Γ - X$ energy spectrum transition in narrow AlAs quantum wells

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Direct observation of Γ−XΓ−X energy spectrum transition in narrow AlAs quantum wells

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Direct observation of Γ−XΓ−X energy spectrum transition in narrow AlAs quantum wells

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|讲解博客

|AI智能校验

Direct observation of $Γ - X$ energy spectrum transition in narrow AlAs quantum wells

讲解博客

AI智能校验

Direct observation of $Γ - X$ energy spectrum transition in narrow AlAs quantum wells

讲解博客

AI智能校验