Negative differential conductance and the bloch oscillations in the natural superlattice of 8H silicon carbide polytype
Negative differential conductance and the bloch oscillations in the natural superlattice of 8H silicon carbide polytype
复制标题
8H碳化硅多型体天然超晶格中的负微分电导与布洛赫振荡
DOI：
--
复制
发表时间：
2000
期刊：
影响因子：
--
通讯作者：
A. A. Lepneva
中科院分区：
文献类型：
--
作者：
V. Sankin;A. A. Lepneva
研究了六方8H-SiC多型体在强电场下的电子输运特性；这些特征是由晶体结构中的天然超晶格引起的，并且与电子谱中微带的周期性势有关。结果表明，在该多型体中，与之前研究的6H-和4H-SiC多型体的情况一样，观察到负微分电导。该电导由布洛赫振荡效应定义。
Special features of electron transport in the strong electric fields in a hexagonal 8H-SiC polytype were studied; these features are caused by the natural superlattice in the crystal structure and are related to the periodic potential of minibands in the electron spectrum. It is shown that in this polytype, as in the case of 6H-and 4H-SiC polytypes studied previously, negative differential conductance is observed. This conductance is defined by the Bloch oscillation effect.