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Moiré induced periodic negative differential conductance on metal bilayer on semiconductor
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Jice Sun1, Shasha Xue1, Xingsen Chen1, Ruijun Xi1, Yi Zhang1, Xian Du1, Xuhui Ning1, Pengyu Hu1, Tingwen Miao1, Hao Yang1, 2, 3, Hemian Yi1, 2, 3, Weijiong Chen1, 2, 3, Xiaoxue Liu1, 2, 3, Liang Liu1, 2, 3, Dandan Guan1, 2, 3, Yaoyi Li1, 2, 3, Shiyong Wang1, 2, 3, Canhua Liu1, 2, 3, Hao Zheng1, 2, 3, *, Jinfeng Jia1, 2, 3, 4, 5, *
Quantum Frontiers | 2026, 4(1) : 56 - 61
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Quantum Frontiers | 2026, 4(1): 56-61
• ORIGINAL ARTICLE •
Moiré induced periodic negative differential conductance on metal bilayer on semiconductor
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Jice Sun1, Shasha Xue1, Xingsen Chen1, Ruijun Xi1, Yi Zhang1, Xian Du1, Xuhui Ning1, Pengyu Hu1, Tingwen Miao1, Hao Yang1, 2, 3, Hemian Yi1, 2, 3, Weijiong Chen1, 2, 3, Xiaoxue Liu1, 2, 3, Liang Liu1, 2, 3, Dandan Guan1, 2, 3, Yaoyi Li1, 2, 3, Shiyong Wang1, 2, 3, Canhua Liu1, 2, 3, Hao Zheng1, 2, 3, *, Jinfeng Jia1, 2, 3, 4, 5, *
Affiliations
  • 1State Key Laboratory of Micro-nano Engineering Science, Tsung-Dao Lee Institute & School of Physics and Astronomy, Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China
  • 2Hefei National Laboratory, Hefei 230088, China
  • 3Shanghai Research Center for Quantum Sciences, 99 Xiupu Road, Shanghai 201315, China
  • 4Quantum Science Center of Guangdong-Hong Kong-Macao Greater Bay Area (Guangdong), Shenzhen 518045, China
  • 5Department of Physics, Southern University of Science and Technology, Shenzhen 518055, China
Published: 2026-03-15 doi: 10.1007/s44214-026-00102-1
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Negative Differential Conductance (NDC) is a hallmark anomalous phenomenon in transport measurements, which is relatively rare in scanning tunneling microscopy due to its direct association with the local density of states. In this work, we constructed an ultrathin two-dimensional metal/semiconductor heterostructure by epitaxially growing a bilayer bismuth (Bi) film on a tin selenide (SnSe) substrate, revealing a unique moiré pattern arising from lattice mismatch. Spatially resolved tunneling spectroscopy detected a prominent NDC feature at approximately -650 meV. Both the energy position and depth of the NDC dip are strictly modulated by the periodicity of the moiré pattern. Our work not only establishes a novel Bi/SnSe material platform exhibiting NDC but also reports the visualization of NDC spatially modulated by a two-dimensional moiré superlattice, providing insight for the moiré electronics.

Bismuth  /  Negative differential conductance  /  Moiré pattern  /  Scanning tunneling microscopy/spectroscopy
Jice Sun, Shasha Xue, Xingsen Chen, Ruijun Xi, Yi Zhang, Xian Du, Xuhui Ning, Pengyu Hu, Tingwen Miao, Hao Yang, Hemian Yi, Weijiong Chen, Xiaoxue Liu, Liang Liu, Dandan Guan, Yaoyi Li, Shiyong Wang, Canhua Liu, Hao Zheng, Jinfeng Jia. Moiré induced periodic negative differential conductance on metal bilayer on semiconductor[J]. Quantum Frontiers, 2026 , 4 (1) : 56 -61 . DOI: 10.1007/s44214-026-00102-1
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Funding
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  • NSFC(12488101; 92365302; 22325203; 12474156; 12474121; 92577203; 12574146; 12574174; 2024YFA1410100; 2025YFE0201200)
  • Science and Technology Commission of Shanghai Municipality(2019SHZDZX01; 24LZ1401000)
  • Cultivation Project of Shanghai Research Center for Quantum Sciences(LZPY2024-04)
  • Pujiang Talent Program(24PJA042; 24PJA062)
  • Quantum Science and Technology-National Science and Technology Major Project(2021ZD0302500)
Appendix
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Year 2026 volume 4 Issue 1
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45
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Article Info
doi: 10.1007/s44214-026-00102-1
  • Receive Date：2026-01-12
  • Online Date：2026-08-13
  • Published：2026-03-15
Article Data
Affiliations
History
  • Received：2026-01-12
  • Revised：2026-02-09
  • Accepted：2026-03-01
Funding
NSFC(12488101; 92365302; 22325203; 12474156; 12474121; 92577203; 12574146; 12574174; 2024YFA1410100; 2025YFE0201200)
Science and Technology Commission of Shanghai Municipality(2019SHZDZX01; 24LZ1401000)
Cultivation Project of Shanghai Research Center for Quantum Sciences(LZPY2024-04)
Pujiang Talent Program(24PJA042; 24PJA062)
Quantum Science and Technology-National Science and Technology Major Project(2021ZD0302500)
Affiliations
    1State Key Laboratory of Micro-nano Engineering Science, Tsung-Dao Lee Institute & School of Physics and Astronomy, Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China
    2Hefei National Laboratory, Hefei 230088, China
    3Shanghai Research Center for Quantum Sciences, 99 Xiupu Road, Shanghai 201315, China
    4Quantum Science Center of Guangdong-Hong Kong-Macao Greater Bay Area (Guangdong), Shenzhen 518045, China
    5Department of Physics, Southern University of Science and Technology, Shenzhen 518055, China

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光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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