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Modulating the electronic structures of blue phosphorene towards spintronics
Xiang-Qian Lu1, Chuan-Kui Wang, Xiao-Xiao Fu
1Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, School of Physics and Electronics, Shandong Normal University, Jinan 250358, China. fuxiaoxiao@sdnu.edu.cn.
Surface modification of blue phosphorene nanoribbons with transition metals effectively tunes their electronic and magnetic properties. This functionalization enables potential spintronic applications, notably achieving a giant magnetoresistance effect.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Nanotechnology
Background:
- Blue phosphorene nanoribbons (BPNs) are promising materials for spintronics.
- Modulating their electronic and magnetic properties is key for device applications.
- Surface functionalization offers a pathway to tailor BPN characteristics.
Purpose of the Study:
- To investigate the effects of 3d transition metal adsorption on BPNs.
- To explore the potential of functionalized BPNs in spintronics.
- To understand the energetic, electronic, magnetic, and transport properties of modified BPNs.
Main Methods:
- Density Functional Theory (DFT) calculations.
- Non-equilibrium Green's function (NEGF) method.
- Systematic investigation of hydrogenated armchair and zigzag BPNs with transition metal adatoms (Sc-Ni).
Main Results:
- BPNs readily adsorb transition metal adatoms in a 2D growth mode.
- Adsorption significantly reduces the bandgap and induces spin-polarization.
- Sc-adsorbed zigzag BPNs exhibit a giant magnetoresistance (GMR) effect exceeding 500.
Conclusions:
- Surface adsorption of 3d transition metals is an effective method to functionalize BPNs.
- Functionalized BPNs show great potential for spintronic device applications.
- The observed GMR effect highlights the promise for advanced spintronic functionalities.
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