Scattering-controlled transmission resonances and negative differential conductance by field-induced localization in superlattices.
Scattering-controlled transmission resonances and negative differential conductance by field-induced localization in superlattices.
复制标题
超晶格中场致局域化的散射控制传输谐振和负微分电导。
作者：
Beltram;Capasso;Sivco;Hutchinson;Chu;Cho
首次观察到超晶格中散射控制的传输共振。这些源于由厚度等于电子相干长度的超晶格子集支持的状态。在较低电场下，由于渐进场感应波函数局域化，还观察到了宽阔的负微分电导区域。这种现象在物理上等同于 Esaki 和 Tsu 于 1970 年预测的布拉格衍射引起的负微分电导
The first observation of scattering-controlled transmission resonances in superlattices is reported. These originate from states supported by subsets of the superlattice of thickness equal to the electron coherence length. At lower electric fields a broad region of negative differential conductance due to progressive field-induced wave-function localization is also observed. This phenomenon is shown to be physically equivalent to the Bragg-diffraction-induced negative differential conductance predicted by Esaki and Tsu in 1970