Detection of local-moment formation using the resonant interaction between coupled quantum wires.
Detection of local-moment formation using the resonant interaction between coupled quantum wires.
复制标题
利用耦合量子线之间的共振相互作用检测局部矩的形成。
DOI：
10.1103/physrevlett.92.096802
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发表时间：
2003
影响因子：
8.6
通讯作者：
J. Bird
中科院分区：
文献类型：
--
作者：
Vadim Puller;L. Mourokh;A. Shailos;J. Bird
研究了多体相互作用对一对通过量子点相互耦合的量子线输运特性的影响。在其中一条导线中形成局部磁矩的条件下，与另一条导线的隧道耦合在其态密度中产生相关峰，这可以在电导测量中直接检测到。因此，我们的理论能够解释T。Morimoto等人[Appl.Phys.Lett.，()]]并证明耦合量子线可用作检测局部磁矩形成的系统。
We study the influence of many-body interactions on the transport characteristics of a pair of quantum wires that are coupled to each other by means of a quantum dot. Under conditions where a local magnetic moment is formed in one of the wires, tunnel coupling to the other gives rise to an associated peak in its density of states, which can be detected directly in a conductance measurement. Our theory is therefore able to account for the key observations in the recent study of T. Morimoto et al. [Appl. Phys. Lett., ()]], and demonstrates that coupled quantum wires may be used as a system for the detection of local magnetic-moment formation.