标题： 掺杂原子晶体管中库仑阻塞输运中的非弹性库伦隧穿共振 显示英文标题

标题： Inelastic Cotunneling Resonances in the Coulomb-Blockade Transport in Donor-Atom Transistors

摘要： 我们报告了通过硅纳米尺度晶体管中的磷掺杂剂的有限偏压电输运特性，在库仑阻塞区域中我们观察到了非弹性共隧穿电流。 共隧穿电流看起来像一个共振隧穿电流峰，从阻塞区和非阻塞区交叉处的激发态中出现。 这些共隧穿特性是独特的，因为迄今为止报道的非弹性共隧穿电流要么是一个更宽的隆起，要么是电流的连续增加。 这一发现纯粹归因于涉及基态和激发态的与激发相关的非弹性共隧穿。 对双能级量子点进行了理论计算，支持我们的实验观察。 显示英文摘要

摘要： 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.