3 years ago

The effects of geometry, exchange and electric fields on transport properties of nonsymmetric T-shaped silicene nanoribbons

Yujie Bai, Chengming Gu, Ning Xu, Xiuqiang Wu, Hengyi Xu, Haiyang Zhang
We propose two types of nonsymmetric T-shaped silicene nanoribbons that show peculiar spin transport properties. In type I and II T-shaped silicene nanoribbons, we modulate the overall conductance to one lead by changing the size of another lead. In type I T-shaped silicene nanoribbons, the conductance from L lead to R lead increases, while the conductance from L lead to T lead decreases with the size of R lead. A conductance gap near the Fermi energy is observed in the conductance from L lead to semiconducting T lead. Taking into account the exchange field, the near-perfect spin polarization can be acquired with ease at the semiconducting T lead. The spin polarization of each lead can be controlled by modulating the size of lead, electric field and exchange field. Similar properties are observed in type II T-shaped silicene nanoribbons. Thus the T-shaped silicene nanoribbons can serve as the important components of spin polarized nanodevice and nanocircuits.
You might also like
Never Miss Important Research

Researcher is an app designed by academics, for academics. Create a personalised feed in two minutes.
Choose from over 15,000 academics journals covering ten research areas then let Researcher deliver you papers tailored to your interests each day.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.