C-doped zigzag blue phosphorene nanoribbons for GMR, rectification behaviour and NDR based devices

ABSTRACT

Based on density functional theory (DFT) and nonequilibrium Green's function (NEGF) framework, to study the monolayer (ML) blue phosphorene (BlueP) doped with C along zigzag direction, such as the structural stability, and electronic and transport properties. Interestingly, we found that doping engineering strategies can effectively transform monolayer ML ZBlueP doped with C into a spintronic nanodevice with a few unique transport properties. Firstly, our model showed a magnificently giant magnetoresistance (GMR) up to 10${}^4$ under low bias. Secondly, a rectifier with a large rectification ratio (RR) of 10${}^5$ was observed. Lastly, negative differential resistance with a peak-to-valley current ratio (PVCR) of 10${}^4$ was observed. Our research shows a promising route towards the development of high-performance ML ZBlueP spintronics technology by doping with C atom. Our results indicate that our models have immense potential for application in nanoscale spintronic devices.

GRAPHICAL ABSTRACT

KEYWORDS:

• Blue phosphorene (BlueP)
• density functional theory (DFT)
• rectification ratio (RR)
• giant magnetoresistance (GMR)
• negative differential resistance (NDR)

Acknowledgments

Yi Lei and Xiangfu Wei contributed equally to this work.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

We acknowledge financial support from the National Natural Science Foundation of China (Grant No. 61720106009). This study was financially supported by the Guangxi Natural Science Foundation Project (Grant No. 2020GXNSFAA159156), and the Project of Improving the Basic Scientific Research Ability of Young and Middle-aged Teachers in Guangxi Universities (Grant No. 2023KY1154). R. G. Wang was supported partially by the postgraduate research opportunities programme of Hongzhiwei Technology (Shanghai) Co., Ltd. (hzwtech-PROP).