中国物理B ›› 2024, Vol. 33 ›› Issue (10): 107301-107301.doi: 10.1088/1674-1056/ad655b

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Peak structure in the interlayer conductance of Moiré superlattices

Yizhou Tao(陶懿洲)1, Chao Liu(刘超)1, Mingwen Xiao(肖明文)2, and Henan Fang(方贺男)1,†   

  1. 1 College of Electronic and Optical Engineering & College of Flexible Electronics (Future Technology), Nanjing University of Posts and Telecommunications, Nanjing 210023, China;
    2 Department of Physics, Nanjing University, Nanjing 210093, China
  • 收稿日期:2024-03-04 修回日期:2024-07-07 接受日期:2024-07-19 发布日期:2024-09-19
  • 通讯作者: Henan Fang E-mail:fanghn@njupt.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 11704197) and the Natural Science Foundation of Nanjing University of Posts and Telecommunications (Grant Nos. NY221066 and NY223074).

Peak structure in the interlayer conductance of Moiré superlattices

Yizhou Tao(陶懿洲)1, Chao Liu(刘超)1, Mingwen Xiao(肖明文)2, and Henan Fang(方贺男)1,†   

  1. 1 College of Electronic and Optical Engineering & College of Flexible Electronics (Future Technology), Nanjing University of Posts and Telecommunications, Nanjing 210023, China;
    2 Department of Physics, Nanjing University, Nanjing 210093, China
  • Received:2024-03-04 Revised:2024-07-07 Accepted:2024-07-19 Published:2024-09-19
  • Contact: Henan Fang E-mail:fanghn@njupt.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 11704197) and the Natural Science Foundation of Nanjing University of Posts and Telecommunications (Grant Nos. NY221066 and NY223074).

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摘要： We investigate the peak structure in the interlayer conductance of Moiré superlattices using a tunneling theory we developed previously. The theoretical results predict that, due to the resonance of two different partial waves, the double-peak structure can appear in the curve of the interlayer conductance versus twist angle. Furthermore, we study the influences of the model parameters, i.e., the chemical potential of electrodes, the thickness of Moiré superlattice, and the strength of interface potential, on the peak structure of the interlayer conductance. In particular, the parameter dependence of the peak structure is concluded via a phase diagram, and the physical meanings of the phase diagram is formulized. Finally, the potential applications of the present work is discussed.

关键词: Moiré superlattice, interlayer conductance, electronic transport, twistronics

Abstract: We investigate the peak structure in the interlayer conductance of Moiré superlattices using a tunneling theory we developed previously. The theoretical results predict that, due to the resonance of two different partial waves, the double-peak structure can appear in the curve of the interlayer conductance versus twist angle. Furthermore, we study the influences of the model parameters, i.e., the chemical potential of electrodes, the thickness of Moiré superlattice, and the strength of interface potential, on the peak structure of the interlayer conductance. In particular, the parameter dependence of the peak structure is concluded via a phase diagram, and the physical meanings of the phase diagram is formulized. Finally, the potential applications of the present work is discussed.

Key words: Moiré superlattice, interlayer conductance, electronic transport, twistronics

中图分类号:  (Tunneling)

  • 73.43.Jn
78.67.Pt (Multilayers; superlattices; photonic structures; metamaterials) 72.80.Vp (Electronic transport in graphene) 72.10.-d (Theory of electronic transport; scattering mechanisms)