Transport through a 2DEG channel with superconducting boundaries

SURFACE SCIENCE

卷:361

Article; Proceedings Paper

Nitta, J ; vanWees, BJ ; Heida, JP ; Klapwijk, TM ; Dimoulas, A ; vandeGraaf, W ; Borghs, G

关键词: electrical transport;    electrical transport measurements;    indium arsenide;    niobium;    quantum effects;    quantum wells;    semiconductor-superconductor interfaces;    superconductivity;   

DOI  :  10.1016/0039-6028(96)00412-8

来源: Elsevier

【 摘 要 】

We have investigated transport through a channel with superconducting boundaries where-electrons are confined by Andreev reflection. Superconducting phase-sensitive transport is discussed using qualitative arguments. The transfer resistance R(t) through the channel as well as the resistance R(i) between the injector and the channel have been measured as a function of the phase difference phi Between the superconducting boundaries. It is not yet clear that the observed oscillation in resistance can be attributed to quasi-particle phase-sensitive transport. The oscillation amplitude in R(t) due to the transmitted current modulation is less than 0.1% in this experiment.

【 授权许可】

Free