%A Wei Zhu, Ai-Min Guo, Qing-Feng Sun %T Electronic transport through tetrahedron-structured DNA-like system %0 Journal Article %D 2014 %J Front. Phys. %J Frontiers of Physics %@ 2095-0462 %R 10.1007/s11467-013-0353-5 %P 774-779 %V 9 %N 6 %U {https://journal.hep.com.cn/fop/EN/10.1007/s11467-013-0353-5 %8 2014-12-24 %X

We theoretically investigate the electronic transport properties of a multi-terminal tetrahedronstructured DNA under a uniform magnetic field. Based on a tight-binding model, the current and nonlocal resistance are calculated under different situations by employing the Landauer–Büttiker formula. Our results indicate that the current displays a clear sign of interference in the presence of the magnetic field and can be mainly divided into three patterns, as demonstrated by the Fourier transformation. Furthermore, the tetrahedron-structured DNA can be used as a molecular switch. The underlying physical mechanisms are analyzed for the various phenomena observed in this threedimensional DNA interferometer.