The sensitive tunability of superconducting critical temperature in high-buckled plumbene by shifting Fermi level

Zhang, Binyuan; Guo, Fei; Zhu, Mingfeng; Feng, Lanting; Zheng, Yisong

doi:10.1016/j.physe.2021.114688

Cited by 4 publications

(7 citation statements)

References 21 publications

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“…On the other hand, the instability of Au‐plumbene toward the flat limit explains why a single flat Pb 2 Au binary layer has never been observed. [ 35 ] Compared with the phonon structure of a pure plumbene, [ 28 ] the Au‐plumbene has three additional optical phonon bands that contribute to EPC. Figure S4 of the Supporting Information provides evidences that both acoustic and optical phonon modes in out‐of‐plane directions contribute significantly to EPC, indicating the importance of buckling and intercalated Au in superconductivity of Au‐plumbene with a 2D honeycomb structure.…”

Section: Resultsmentioning

confidence: 99%

Enhanced Superconductivity and Rashba Effect in a Buckled Plumbene‐Au Kagome Superstructure

Chen

et al. 2023

Advanced Science

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Plumbene, with a structure similar to graphene, is expected to possess a strong spin-orbit coupling and thus enhances its superconducting critical temperature (T c ). In this work, a buckled plumbene-Au Kagome superstructure grown by depositing Au on Pb(111) is investigated. The superconducting gap monitored by temperature-dependent scanning tunneling microscopy/spectroscopy shows that the buckled plumbene-Au Kagome superstructure not only has an enhanced T c with respect to that of a monolayer Pb but also possesses a higher value than what owned by a bulk Pb substrate. By combining angle-resolved photoemission spectroscopy with density functional theory, the monolayer Au-intercalated low-buckled plumbene sandwiched between the top Au Kagome layer and the bottom Pb(111) substrate is confirmed and the electron-phonon coupling-enhanced superconductivity is revealed. This work demonstrates that a buckled plumbene-Au Kagome superstructure can enhance superconducting T c and Rashba effect, effectively triggering the novel properties of a plumbene.

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Section: Resultsmentioning

confidence: 99%

Enhanced Superconductivity and Rashba Effect in a Buckled Plumbene‐Au Kagome Superstructure

Chen

et al. 2023

Advanced Science

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“…We have studied high-buckled plumbene theoretically before, and its crystal structure and properties can be referred in our previous work. 30,31 What we want to point out is that many band edges in the band structure of high-buckled plumbene, and hence the VHS, are near the Fermi level. The electronic band structure of high-buckled plumbene along the high-symmetry path is shown in Fig.…”

Section: B Intrinsic Resistivitymentioning

confidence: 99%

First-principles calculations on the intrinsic resistivity of realistic metals: a case study of monolayer V₂N

Zhang,

Gong

2024

Phys. Chem. Chem. Phys.

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“…Electron-phonon coupling strength is found to be critical for the transition temperature T c . Zhang et al [59] discovered that the existence of some band edges closing to the Fermi level caused the sharp peaks of the DOS around the Fermi level in 2D high-buckled plumbene, and the F I G U R E 2 Comparison between three-phonon scattering rate (black) and electron-phonon coupling scattering rate at (A) electron and (B) hole concentration of 10 13 cm −2 in monolayer SnSe. [39] C, Normalized lattice thermal conductivity of monolayer SnSe varies with carrier density.…”

Section: Eletron-phonon Interaction In Conventional Superconductormentioning

confidence: 99%

“…[58] D, T c and E, electron-phonon coupling strength of 2D high-buckled plumbene with/without spin-orbit coupling (wSOC/woSOC) varied with E f . [59] 3D plot of (F) T c and (G) λ(n,ɛ) in the hole-doped graphene. [63] H, Diagram of pressure-temperature for 2H -MoS 2.…”

Section: Eletron-phonon Interaction In Conventional Superconductormentioning

confidence: 99%

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Recent progress in electron–phonon interaction of two‐dimensional materials

Bai

et al. 2022

Nano Select

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The coupling between electrons and phonons is ubiquitous in condensed matter physics. In recent years, with the rise of two dimensional (2D) materials, electron–phonon interaction exhibits unique characteristics compared with their three‐dimensional counterparts. In this paper, research progress of electron–phonon interaction in 2D materials is briefly reviewed, mainly focus on thermoelectric device, conventional superconductor, field effect transistor, and photoelectric device. Firstly, electron–phonon interaction on thermoelectric application of 2D materials is concluded according to recent reports, and strategies to increase figure of merit are discussed. Next, strong electron–phonon coupling strength is essential for increasing transition temperature of superconductors. Conversely, electron–phonon interaction inhibits the carrier mobility for transport process. By summarizing research works in the past years, its role on the performance of 2D materials‐based field effect transistors is fully evaluated. Furthermore, the influences of electron–phonon interaction on light–matter interaction in 2D materials are briefly overviewed. Finally, some outlooks in the field are prospected. In a word, understanding electron–phonon interaction in 2D materials establishes strategically important directions for manipulating physical properties and optimizing device design.

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The sensitive tunability of superconducting critical temperature in high-buckled plumbene by shifting Fermi level

Cited by 4 publications

References 21 publications

Enhanced Superconductivity and Rashba Effect in a Buckled Plumbene‐Au Kagome Superstructure

Enhanced Superconductivity and Rashba Effect in a Buckled Plumbene‐Au Kagome Superstructure

First-principles calculations on the intrinsic resistivity of realistic metals: a case study of monolayer V₂N

Recent progress in electron–phonon interaction of two‐dimensional materials

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The sensitive tunability of superconducting critical temperature in high-buckled plumbene by shifting Fermi level

Cited by 4 publications

References 21 publications

Enhanced Superconductivity and Rashba Effect in a Buckled Plumbene‐Au Kagome Superstructure

Enhanced Superconductivity and Rashba Effect in a Buckled Plumbene‐Au Kagome Superstructure

First-principles calculations on the intrinsic resistivity of realistic metals: a case study of monolayer V2N

Recent progress in electron–phonon interaction of two‐dimensional materials

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First-principles calculations on the intrinsic resistivity of realistic metals: a case study of monolayer V₂N