Lunde Anders Mathias, Flensberg Karsten, Glazman Leonid I
Nano-Science Center, Niels Bohr Institute, University of Copenhagen, DK-2100 Copenhagen, Denmark.
Phys Rev Lett. 2006 Dec 22;97(25):256802. doi: 10.1103/PhysRevLett.97.256802. Epub 2006 Dec 20.
We study the effect of electron-electron interaction on the transport properties of short clean quantum wires adiabatically connected to reservoirs. Interactions lead to resonances in a multichannel wire at particular values of the Fermi energy. We investigate in detail the resonance in a two-channel wire. The (negative) conductance correction peaks at the resonance, and decays exponentially as the Fermi energy is tuned away, the resonance width being given by the temperature. Likewise, the thermopower shows a characteristic structure, which is surprisingly well approximated by the so-called Mott formula. Finally, fourfold splitting of the resonance in a magnetic field provides a unique signature of the effect.
我们研究了电子-电子相互作用对绝热连接到储能器的短清洁量子线输运性质的影响。相互作用会导致多通道量子线在特定费米能值处出现共振。我们详细研究了两通道量子线中的共振。（负）电导修正在共振处达到峰值，并随着费米能的调谐而指数衰减，共振宽度由温度给出。同样，热电势呈现出一种特征结构，令人惊讶的是，它可以由所谓的莫特公式很好地近似。最后，磁场中共振的四重分裂提供了该效应的独特特征。
