论文标题
从透明传导到固定孔数量的库仑封锁
From Transparent Conduction to Coulomb Blockade at Fixed Hole Number
论文作者
论文摘要
我们在高磁场的清洁单壁碳纳米管设备上介绍了一组复杂的传输光谱数据。在零轴向场，该设备在孔传导中显示，越来越负的栅极电压迅速向高接触透明度和最终的Fabry-Perot电导干扰。当将轴向场成分提高到B = 17T时，触点透明度和总体电导率一直降低到库仑阻滞，清楚地显示了随后的前10个孔。传输方案之间的连续过渡以丰富的类似近野的共振频谱为主，在稳定图中具有独特的特征。
We present a complex set of transport spectroscopy data on a clean single-wall carbon nanotube device in high magnetic fields. At zero axial field, the device displays in hole conduction with increasingly negative gate voltage a fast transition towards high contact transparency and eventually Fabry-Perot interference of conductance. When increasing the axial field component up to B=17T, the contact transparency and the overall conductance are reduced all the way to Coulomb blockade, clearly displaying the subsequent charging with the first 10 holes. The continuous transition between the transport regimes is dominated by a rich spectrum of Kondo-like resonances, with distinct features in the stability diagrams.
