Cornaglia P S, Balseiro C A
Instituto Balseiro and Centro Atómico Bariloche, Comisión Nacional de Energía Atómica, 8400 San Carlos de Bariloche, Río Negro, Argentina.
Phys Rev Lett. 2003 May 30;90(21):216801. doi: 10.1103/PhysRevLett.90.216801.
We study the transport through a quantum dot, in the Kondo Coulomb blockade valley, embedded in a mesoscopic device with finite wires. The quantization of states in the circuit that hosts the quantum dot gives rise to finite size effects. These effects make the conductance sensitive to the ratio of the Kondo screening length to the wires length and provide a way of measuring the Kondo cloud. We present results obtained with the numerical renormalization group for a wide range of physically accessible parameters.
我们研究了通过嵌入具有有限长度导线的介观器件中的处于近藤库仑阻塞谷的量子点的输运。承载量子点的电路中态的量子化会产生有限尺寸效应。这些效应使得电导对近藤屏蔽长度与导线长度的比值敏感，并提供了一种测量近藤云的方法。我们展示了用数值重整化群针对一系列物理上可及的参数所获得的结果。
