Fully Two-Dimensional Incommensurate Charge Modulation on the Pd-Terminated Polar Surface of PdCoO2
Kong P, Li G, Yang Z, Wen C, Qi Y, Felser C, Yan S (2022)
Publication Type: Journal article
Publication year: 2022
Journal
Book Volume: 22
Pages Range: 5635-5640
Journal Issue: 14
DOI: 10.1021/acs.nanolett.1c03857
Abstract
Here, we use low-temperature scanning tunneling microscopy and spectroscopy to study the polar surfaces of PdCoO2. On the CoO2-terminated polar surface, we detect the quasiparticle interference pattern originating from the Rashba-like spin-split surface states. On the well-ordered Pd-terminated polar surface, we observe a regular lattice that has a larger lattice constant than the atomic lattice of PdCoO2. In comparison with the shape of the hexagonal Fermi surface on the Pd-terminated surface, we identify this regular lattice as a fully two-dimensional incommensurate charge modulation that is driven by the Fermi surface nesting. More interestingly, we also find the moiré pattern induced by the interference between the two-dimensional incommensurate charge modulation in the Pd layer and its atomic lattice. Our results not only show a new charge modulation on the Pd surface of PdCoO2but also pave the way for fully understanding the novel electronic properties of this material.
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How to cite
APA:
Kong, P., Li, G., Yang, Z., Wen, C., Qi, Y., Felser, C., & Yan, S. (2022). Fully Two-Dimensional Incommensurate Charge Modulation on the Pd-Terminated Polar Surface of PdCoO2. Nano Letters, 22(14), 5635-5640. https://doi.org/10.1021/acs.nanolett.1c03857
MLA:
Kong, Pengfei, et al. "Fully Two-Dimensional Incommensurate Charge Modulation on the Pd-Terminated Polar Surface of PdCoO2." Nano Letters 22.14 (2022): 5635-5640.
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