Direct observation of the vanishing electron energy loss spectroscopy cross section in graphene: In transmission electron energy loss (EEL) spectroscopy, the cross section in two dimensions (2D) is quenched by kinematic effects once the momentum transfer becomes smaller than a critical value set by 𝑞𝑧, the momentum loss parallel to the beam. Our highly momentum (Δ⁢𝑞=0.02Å−1) and energy (Δ⁢𝐸=45 meV) resolved setup is instrumental in delivering the experimental verification of quenched 2D EEL spectra on freestanding graphene at momentum transfers 𝑞 below 0.06Å−1. We retrieve the intrinsic uniform dielectric response of graphene from measured spectra by quantifying the kinematic suppression.

Alberto Guandalini; Ryosuke Senga; Yung Chang Lin; Kazu Suenaga; Paolo Barone; Francesco Mauri; Thomas Pichler; Christian Kramberger

doi:10.1103/PhysRevB.111.L041401

Direct observation of the vanishing electron energy loss spectroscopy cross section in graphene: In transmission electron energy loss (EEL) spectroscopy, the cross section in two dimensions (2D) is quenched by kinematic effects once the momentum transfer becomes smaller than a critical value set by 𝑞𝑧, the momentum loss parallel to the beam. Our highly momentum (Δ⁢𝑞=0.02Å−1) and energy (Δ⁢𝐸=45 meV) resolved setup is instrumental in delivering the experimental verification of quenched 2D EEL spectra on freestanding graphene at momentum transfers 𝑞 below 0.06Å−1. We retrieve the intrinsic uniform dielectric response of graphene from measured spectra by quantifying the kinematic suppression.

Alberto Guandalini (Corresponding author), Ryosuke Senga, Yung Chang Lin, Kazu Suenaga, Paolo Barone, Francesco Mauri, Thomas Pichler, Christian Kramberger

Electronic Properties of Materials

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Abstract

In transmission electron energy loss (EEL) spectroscopy, the cross section in two dimensions (2D) is quenched by kinematic effects once the momentum transfer becomes smaller than a critical value set by qz, the momentum loss parallel to the beam. Our highly momentum (Δq=0.02Å-1) and energy (ΔE=45 meV) resolved setup is instrumental in delivering the experimental verification of quenched 2D EEL spectra on freestanding graphene at momentum transfers q below 0.06Å-1. We retrieve the intrinsic uniform dielectric response of graphene from measured spectra by quantifying the kinematic suppression.

Original language	English
Article number	L041401
Number of pages	6
Journal	Physical Review B
Volume	111
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevB.111.L041401 https://doi.org/10.48550/arXiv.2406.02998
Publication status	Published - 14 Jan 2025

Austrian Fields of Science 2012

103018 Materials physics
103009 Solid state physics
103020 Surface physics

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MORE-TEM: MOmentum and position REsolved mapping Transmission Electron energy loss Microscope
Pichler, T. (Project Lead)
1/05/21 → 30/04/27
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Guandalini, A., Senga, R., Lin, Y. C., Suenaga, K., Barone, P., Mauri, F., Pichler, T., & Kramberger, C. (2025). Direct observation of the vanishing electron energy loss spectroscopy cross section in graphene: In transmission electron energy loss (EEL) spectroscopy, the cross section in two dimensions (2D) is quenched by kinematic effects once the momentum transfer becomes smaller than a critical value set by 𝑞𝑧, the momentum loss parallel to the beam. Our highly momentum (Δ⁢𝑞=0.02Å−1) and energy (Δ⁢𝐸=45 meV) resolved setup is instrumental in delivering the experimental verification of quenched 2D EEL spectra on freestanding graphene at momentum transfers 𝑞 below 0.06Å−1. We retrieve the intrinsic uniform dielectric response of graphene from measured spectra by quantifying the kinematic suppression. Physical Review B, 111(4), Article L041401. https://doi.org/10.1103/PhysRevB.111.L041401, https://doi.org/10.48550/arXiv.2406.02998

Guandalini, Alberto ; Senga, Ryosuke ; Lin, Yung Chang et al. / Direct observation of the vanishing electron energy loss spectroscopy cross section in graphene : In transmission electron energy loss (EEL) spectroscopy, the cross section in two dimensions (2D) is quenched by kinematic effects once the momentum transfer becomes smaller than a critical value set by 𝑞𝑧, the momentum loss parallel to the beam. Our highly momentum (Δ⁢𝑞=0.02Å−1) and energy (Δ⁢𝐸=45 meV) resolved setup is instrumental in delivering the experimental verification of quenched 2D EEL spectra on freestanding graphene at momentum transfers 𝑞 below 0.06Å−1. We retrieve the intrinsic uniform dielectric response of graphene from measured spectra by quantifying the kinematic suppression. In: Physical Review B. 2025 ; Vol. 111, No. 4.

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title = "Direct observation of the vanishing electron energy loss spectroscopy cross section in graphene: In transmission electron energy loss (EEL) spectroscopy, the cross section in two dimensions (2D) is quenched by kinematic effects once the momentum transfer becomes smaller than a critical value set by 𝑞𝑧, the momentum loss parallel to the beam. Our highly momentum (Δ⁢𝑞=0.02{\AA}−1) and energy (Δ⁢𝐸=45 meV) resolved setup is instrumental in delivering the experimental verification of quenched 2D EEL spectra on freestanding graphene at momentum transfers 𝑞 below 0.06{\AA}−1. We retrieve the intrinsic uniform dielectric response of graphene from measured spectra by quantifying the kinematic suppression.",

abstract = "In transmission electron energy loss (EEL) spectroscopy, the cross section in two dimensions (2D) is quenched by kinematic effects once the momentum transfer becomes smaller than a critical value set by qz, the momentum loss parallel to the beam. Our highly momentum (Δq=0.02{\AA}-1) and energy (ΔE=45 meV) resolved setup is instrumental in delivering the experimental verification of quenched 2D EEL spectra on freestanding graphene at momentum transfers q below 0.06{\AA}-1. We retrieve the intrinsic uniform dielectric response of graphene from measured spectra by quantifying the kinematic suppression.",

author = "Alberto Guandalini and Ryosuke Senga and Lin, \{Yung Chang\} and Kazu Suenaga and Paolo Barone and Francesco Mauri and Thomas Pichler and Christian Kramberger",

note = "Publisher Copyright: {\textcopyright} 2025 American Physical Society.",

year = "2025",

month = jan,

day = "14",

doi = "10.1103/PhysRevB.111.L041401",

language = "English",

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Guandalini, A, Senga, R, Lin, YC, Suenaga, K, Barone, P, Mauri, F, Pichler, T & Kramberger, C 2025, 'Direct observation of the vanishing electron energy loss spectroscopy cross section in graphene: In transmission electron energy loss (EEL) spectroscopy, the cross section in two dimensions (2D) is quenched by kinematic effects once the momentum transfer becomes smaller than a critical value set by 𝑞𝑧, the momentum loss parallel to the beam. Our highly momentum (Δ⁢𝑞=0.02Å−1) and energy (Δ⁢𝐸=45 meV) resolved setup is instrumental in delivering the experimental verification of quenched 2D EEL spectra on freestanding graphene at momentum transfers 𝑞 below 0.06Å−1. We retrieve the intrinsic uniform dielectric response of graphene from measured spectra by quantifying the kinematic suppression.', Physical Review B, vol. 111, no. 4, L041401. https://doi.org/10.1103/PhysRevB.111.L041401, https://doi.org/10.48550/arXiv.2406.02998

Direct observation of the vanishing electron energy loss spectroscopy cross section in graphene: In transmission electron energy loss (EEL) spectroscopy, the cross section in two dimensions (2D) is quenched by kinematic effects once the momentum transfer becomes smaller than a critical value set by 𝑞𝑧, the momentum loss parallel to the beam. Our highly momentum (Δ⁢𝑞=0.02Å−1) and energy (Δ⁢𝐸=45 meV) resolved setup is instrumental in delivering the experimental verification of quenched 2D EEL spectra on freestanding graphene at momentum transfers 𝑞 below 0.06Å−1. We retrieve the intrinsic uniform dielectric response of graphene from measured spectra by quantifying the kinematic suppression. / Guandalini, Alberto (Corresponding author); Senga, Ryosuke; Lin, Yung Chang et al.
In: Physical Review B, Vol. 111, No. 4, L041401, 14.01.2025.

Publications: Contribution to journal › Article › Peer Reviewed

TY - JOUR

T1 - Direct observation of the vanishing electron energy loss spectroscopy cross section in graphene

T2 - In transmission electron energy loss (EEL) spectroscopy, the cross section in two dimensions (2D) is quenched by kinematic effects once the momentum transfer becomes smaller than a critical value set by 𝑞𝑧, the momentum loss parallel to the beam. Our highly momentum (Δ⁢𝑞=0.02Å−1) and energy (Δ⁢𝐸=45 meV) resolved setup is instrumental in delivering the experimental verification of quenched 2D EEL spectra on freestanding graphene at momentum transfers 𝑞 below 0.06Å−1. We retrieve the intrinsic uniform dielectric response of graphene from measured spectra by quantifying the kinematic suppression.

AU - Guandalini, Alberto

AU - Senga, Ryosuke

AU - Lin, Yung Chang

AU - Suenaga, Kazu

AU - Barone, Paolo

AU - Mauri, Francesco

AU - Pichler, Thomas

AU - Kramberger, Christian

PY - 2025/1/14

Y1 - 2025/1/14

N2 - In transmission electron energy loss (EEL) spectroscopy, the cross section in two dimensions (2D) is quenched by kinematic effects once the momentum transfer becomes smaller than a critical value set by qz, the momentum loss parallel to the beam. Our highly momentum (Δq=0.02Å-1) and energy (ΔE=45 meV) resolved setup is instrumental in delivering the experimental verification of quenched 2D EEL spectra on freestanding graphene at momentum transfers q below 0.06Å-1. We retrieve the intrinsic uniform dielectric response of graphene from measured spectra by quantifying the kinematic suppression.

AB - In transmission electron energy loss (EEL) spectroscopy, the cross section in two dimensions (2D) is quenched by kinematic effects once the momentum transfer becomes smaller than a critical value set by qz, the momentum loss parallel to the beam. Our highly momentum (Δq=0.02Å-1) and energy (ΔE=45 meV) resolved setup is instrumental in delivering the experimental verification of quenched 2D EEL spectra on freestanding graphene at momentum transfers q below 0.06Å-1. We retrieve the intrinsic uniform dielectric response of graphene from measured spectra by quantifying the kinematic suppression.

UR - https://www.scopus.com/pages/publications/85214906160

U2 - 10.1103/PhysRevB.111.L041401

DO - 10.1103/PhysRevB.111.L041401

M3 - Article

AN - SCOPUS:85214906160

SN - 2469-9950

VL - 111

JO - Physical Review B

JF - Physical Review B

IS - 4

M1 - L041401

ER -

Guandalini A, Senga R, Lin YC, Suenaga K, Barone P, Mauri F et al. Direct observation of the vanishing electron energy loss spectroscopy cross section in graphene: In transmission electron energy loss (EEL) spectroscopy, the cross section in two dimensions (2D) is quenched by kinematic effects once the momentum transfer becomes smaller than a critical value set by 𝑞𝑧, the momentum loss parallel to the beam. Our highly momentum (Δ⁢𝑞=0.02Å−1) and energy (Δ⁢𝐸=45 meV) resolved setup is instrumental in delivering the experimental verification of quenched 2D EEL spectra on freestanding graphene at momentum transfers 𝑞 below 0.06Å−1. We retrieve the intrinsic uniform dielectric response of graphene from measured spectra by quantifying the kinematic suppression. Physical Review B. 2025 Jan 14;111(4):L041401. doi: 10.1103/PhysRevB.111.L041401, 10.48550/arXiv.2406.02998

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Austrian Fields of Science 2012

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MORE-TEM: MOmentum and position REsolved mapping Transmission Electron energy loss Microscope

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