论文标题
操作中半导体 - 金属纳米线异质结构的空间分辨热电效应
Spatially Resolved Thermoelectric Effects in Operando Semiconductor-Metal Nanowire Heterostructures
论文作者
论文摘要
使用扫描热显微镜研究了由铝纳米线连接的纳米级锗段的热电特性。 168 \，nm长的锗段特性在原子上呈敏锐的界面，并被Al $ _2 $ o $ $ _3 $ shell包围。沿自加热纳米线的温度分布是针对焦耳和毛发效应的施加电流的函数测量的。开发了一个分析，能够从单个测量值中提取热电学和热电特性，包括导热率，对基板的热边界电阻和毛发系数。我们的研究表明，在自热的设备和结构周围的温度进行定量测量的潜力，直至热载体的散射长度。
The thermoelectric properties of a nanoscale germanium segment connected by aluminium nanowires are studied using scanning thermal microscopy. The germanium segment of 168\,nm length features atomically sharp interfaces to the aluminium wires and is surrounded by an Al$_2$O$_3$ shell. The temperature distribution along the self-heated nanowire is measured as a function of the applied electrical current, for both Joule and Peltier effects. An analysis is developed that is able to extract the thermal and thermoelectric properties including thermal conductivity, the thermal boundary resistance to the substrate and the Peltier coefficient from a single measurement. Our investigations demonstrate the potential of quantitative measurements of temperature around self-heated devices and structures down to the scattering length of heat carriers.
