论文标题
非侵入性纳米级电位和弹道传输中的弹道传输
Non-invasive nanoscale potentiometry and ballistic transport in epigraphene nanoribbons
论文作者
论文摘要
最近在二维材料中对非古典电子传输方案的观察已呼吁采用新的高分辨率非侵入性技术来局部探测电子特性。我们引入了一种新型的混合扫描探针技术，以NM-和$μ$ V分辨率绘制局部电阻和电化学潜力，我们将其应用于SIC底物步骤的侧壁上生长的份含量。值得注意的是，电势下降是沿着丝带不均匀的，$ $ m $ m的段显示没有距离的潜在变化。潜在地图与局部电阻的测量非常吻合。这揭示了在环境状态下的弹道传输，与千分钟长的室温电子均值自由路径兼容。
The recent observation of non-classical electron transport regimes in two-dimensional materials has called for new high-resolution non-invasive techniques to locally probe electronic properties. We introduce a novel hybrid scanning probe technique to map the local resistance and electrochemical potential with nm- and $μ$V resolution, and we apply it to study epigraphene nanoribbons grown on the sidewalls of SiC substrate steps. Remarkably, the potential drop is non uniform along the ribbons, and $μ$m-long segments show no potential variation with distance. The potential maps are in excellent agreement with measurements of the local resistance. This reveals ballistic transport in ambient condition, compatible with micrometer-long room-temperature electronic mean free paths.
