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 (Korresp. Autor*in), Ryosuke Senga, Yung Chang Lin, Kazu Suenaga, Paolo Barone, Francesco Mauri, Thomas Pichler, Christian Kramberger

Elektronische Materialeigenschaften

Veröffentlichungen: Beitrag in Fachzeitschrift › Artikel › Peer Reviewed

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.

Originalsprache	Englisch
Aufsatznummer	L041401
Seitenumfang	6
Fachzeitschrift	Physical Review B
Jahrgang	111
Ausgabenummer	4
DOIs	https://doi.org/10.1103/PhysRevB.111.L041401 https://doi.org/10.48550/arXiv.2406.02998
Publikationsstatus	Veröffentlicht - 14 Jan. 2025

ÖFOS 2012

103018 Materialphysik
103009 Festkörperphysik
103020 Oberflächenphysik

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MORE-TEM: MOmentum and position REsolved mapping Transmission Electron energy loss Microscope
Pichler, T.
1/05/21 → 30/04/27
Projekt: Forschungsförderung

Zitationsweisen

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), Artikel 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 ; Band 111, Nr. 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, Jg. 111, Nr. 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 (Korresp. Autor*in); Senga, Ryosuke; Lin, Yung Chang et al.
in: Physical Review B, Band 111, Nr. 4, L041401, 14.01.2025.

Veröffentlichungen: Beitrag in Fachzeitschrift › Artikel › 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

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UR - http://www.scopus.com/inward/record.url?scp=85214906160&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.111.L041401

DO - 10.1103/PhysRevB.111.L041401

M3 - Article

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SN - 2469-9950

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JO - Physical Review B

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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