量子点接触中的边界介导电子-电子相互作用
Boundary-mediated electron-electron interactions in quantum point contacts
摘要:
在电导大于2e^2/h的干净量子点接触中,观察到电导随温度的异常增加。同时,在高温下出现正磁阻。一个模型占电子-电子相互作用介导的束缚aries(散射弗里德尔振荡)定性描述的观察。零磁场下的数值模拟结果支持了这一结论。
英文摘要:
An unusual increase of the conductance with temperature is observed in clean quantum point contacts for conductances larger than 2e^2/h. At the same time a positive magnetoresistance arises at high temperatures. A model accounting for electron-electron interactions mediated by bound- aries (scattering on Friedel oscillations) qualitatively describes the observation. It is supported by numerical simulation at zero magnetic field.
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