中国物理B ›› 2018, Vol. 27 ›› Issue (10): 108504-108504.doi: 10.1088/1674-1056/27/10/108504

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    下一篇

Effects of edge hydrogenation and Si doping on spin-dependent electronic transport properties of armchair boron-phosphorous nanoribbons

Hong Zhao(赵虹), Dan-Dan Peng(彭丹丹), Jun He(何军), Xin-Mei Li(李新梅), Meng-Qiu Long(龙孟秋)   

  1. 1 Hunan Key Laboratory of Super Micro-structure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha 410083, China;
    2 Institute of Low-dimensional Quantum Materials and Devices, School of Physical Science and Technology, Xinjiang University, Urumqi 830046, China
  • 收稿日期:2018-07-01 修回日期:2018-07-24 出版日期:2018-10-05 发布日期:2018-10-05
  • 通讯作者: Jun He, Meng-Qiu Long E-mail:junhe@csu.edu.cn;mqlong@csu.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant No. 21673296), the Hunan Provincial Natural Science Foundation of China (Grant No. 2018JJ2481), and the Fundamental Research Funds for the Central Universities of Central South University, China (Grant No. 2018zzts328).

Effects of edge hydrogenation and Si doping on spin-dependent electronic transport properties of armchair boron-phosphorous nanoribbons

Hong Zhao(赵虹)1, Dan-Dan Peng(彭丹丹)1, Jun He(何军)1, Xin-Mei Li(李新梅)1, Meng-Qiu Long(龙孟秋)1,2   

  1. 1 Hunan Key Laboratory of Super Micro-structure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha 410083, China;
    2 Institute of Low-dimensional Quantum Materials and Devices, School of Physical Science and Technology, Xinjiang University, Urumqi 830046, China
  • Received:2018-07-01 Revised:2018-07-24 Online:2018-10-05 Published:2018-10-05
  • Contact: Jun He, Meng-Qiu Long E-mail:junhe@csu.edu.cn;mqlong@csu.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant No. 21673296), the Hunan Provincial Natural Science Foundation of China (Grant No. 2018JJ2481), and the Fundamental Research Funds for the Central Universities of Central South University, China (Grant No. 2018zzts328).

摘要:

In this article, the spin-dependent electronic and transport properties of the armchair boron-phosphorous nanoribbons (ABPNRs) are mainly studied by using the non-equilibrium Green function method combined with the spin-polarized density function theory. Our calculated electronic structures indicate that the edge hydrogenated ABPNRs exhibit a ferromagnetic bipolar magnetic semiconductor property, and that the Si atom doping can make ABPNRs convert into up-spin dominated half metal. The spin-resolved transport property results show that the doped devices can realize 100% spin-filtering function, and that the interesting negative differential resistance phenomenon can be observed. Our calculations suggest that the ABPNRs can be constructed as a spin heterojunction by introducing Si doping partially, and it would be used as a spin-diode for nano-spintronics in future.

关键词: armchair boron-phosphorous nanoribbon, Si doping, bipolar magnetic semiconductor property, negative differential resistance

Abstract:

In this article, the spin-dependent electronic and transport properties of the armchair boron-phosphorous nanoribbons (ABPNRs) are mainly studied by using the non-equilibrium Green function method combined with the spin-polarized density function theory. Our calculated electronic structures indicate that the edge hydrogenated ABPNRs exhibit a ferromagnetic bipolar magnetic semiconductor property, and that the Si atom doping can make ABPNRs convert into up-spin dominated half metal. The spin-resolved transport property results show that the doped devices can realize 100% spin-filtering function, and that the interesting negative differential resistance phenomenon can be observed. Our calculations suggest that the ABPNRs can be constructed as a spin heterojunction by introducing Si doping partially, and it would be used as a spin-diode for nano-spintronics in future.

Key words: armchair boron-phosphorous nanoribbon, Si doping, bipolar magnetic semiconductor property, negative differential resistance

中图分类号:  (Nanoelectronic devices)

  • 85.35.-p
73.63.-b (Electronic transport in nanoscale materials and structures) 75.75.-c (Magnetic properties of nanostructures) 72.15.Nj (Collective modes (e.g., in one-dimensional conductors))