论文标题
电子隧穿光谱中FESI直接和间接间隙的证据
Evidence for direct and indirect gap in FeSi from electron tunneling spectroscopy
论文作者
论文摘要
我们报告了针对针对均质隧道连接触点的单晶FESI样品以及由PT-RH合金制成的计数器电极进行的电子隧道光谱研究。我们的结果表明，虽然与PT-RH尖端配置中的隧道光谱谱图优选对状态的D-代理密度敏感和间接能量差距，但FESI-FESI类型的隧道连接产生了有关状态和FESI的直接差距的光谱信息。
We report electron tunneling spectroscopy studies on single crystalline FeSi sample performed for the case of homogeneous tunnel junction contacts and for the case of counter electrodes made from Pt-Rh alloy. Our results reveal that while the tunneling spectroscopy in the configuration with Pt-Rh tip is preferably sensitive to the d-partial density of states and to the indirect energy gap, the FeSi-FeSi type of tunnel junction yields spectroscopic information on the c-partial density of states and on the direct gap in FeSi.
