论文标题
供体 - 原子晶体管中库仑阻滞传输中的无弹性共振共振
Inelastic Cotunneling Resonances in the Coulomb-Blockade Transport in Donor-Atom Transistors
论文作者
论文摘要
我们报告了通过硅纳米晶体管中磷供体的电运输的有限偏置特性，在该晶体管中，我们观察到库仑封锁区域中的无弹性肺泡电流。共同渠道的电流看起来像是从封锁和非阻止区域之间的跨界的激发状态涌现出的共振触发电流峰。这些共同渠道特征是唯一的，因为迄今为止，无弹性渠道电流据报道要么是较宽的驼峰，要么是电流的连续增量。这一发现纯粹是由于涉及地面和激发态的激发相关的非弹性共同渠道。进行了两级量子点进行理论计算，支持我们的实验观察。
We report finite-bias characteristics of electrical transport through phosphorus donors in silicon nanoscale transistors, in which we observe inelastic-cotunneling current in the Coulomb blockade region. The cotunneling current appears like a resonant-tunneling current peak emerging from the excited state at the crossover between blockade and non-blockade regions. These cotunneling features are unique, since the inelastic-cotunneling currents have so far been reported either as a broader hump or as a continuous increment of current. This finding is ascribed purely due to excitation-related inelastic cotunneling involving the ground and excited states. Theoretical calculations were performed for a two-level quantum dot, supporting our experimental observation.
