Lobos A M, Aligia A A
Centro Atómico Bariloche, Comisión Nacional de Energía Atómica, 8400 Bariloche, Argentina.
Phys Rev Lett. 2008 Jan 11;100(1):016803. doi: 10.1103/PhysRevLett.100.016803.
We study the conductance through a ring described by the Hubbard model (such as an array of quantum dots), threaded by a magnetic flux and subject to Rashba spin-orbit coupling (SOC). We develop a formalism that is able to describe the interference effects as well as the Kondo effect when the number of electrons in the ring is odd. In the Kondo regime, the SOC reduces the conductance from the unitary limit, and, in combination with the magnetic flux, the device acts as a spin polarizer.
我们研究了通过由哈伯德模型描述的环（如量子点阵列）的电导，该环存在磁通量且受到 Rashba 自旋轨道耦合（SOC）的作用。我们发展了一种形式体系，它能够描述当环中电子数为奇数时的干涉效应以及近藤效应。在近藤 regime 中，SOC 会使电导从幺正极限降低，并且，与磁通量相结合时，该器件可作为一个自旋极化器。
