论文标题
库仑中的自驱动振荡阻塞的悬浮碳纳米管
Self-driven oscillation in Coulomb blockaded suspended carbon nanotubes
论文作者
论文摘要
已知悬浮的碳纳米管在某些条件下（包括低温和高机械质量因素）在机电反馈引起的自动振荡已知。先前的报告确定了近托或高偏置运输制度中这种振荡的签名。在这里，我们观察到自动驱动的振荡，这些振荡会导致正常库仑锁定的低偏置转运的显着传导。使用主方程模型，自动驾驶被证明是由于强烈依赖能量的电子隧道而引起的，并且对偏置，栅极电压和温度的传输特征的依赖性得到很好的再现。
Suspended carbon nanotubes are known to support self-driven oscillations due to electromechanical feedback under certain conditions, including low temperatures and high mechanical quality factors. Prior reports identified signatures of such oscillations in Kondo or high-bias transport regimes. Here, we observe self-driven oscillations that give rise to significant conduction in normally Coulomb-blockaded low-bias transport. Using a master equation model, the self-driving is shown to result from strongly energy-dependent electron tunneling, and the dependencies of transport features on bias, gate voltage, and temperature are well reproduced.
