Electron-phonon coupling in graphene placed between magnetic Li and Si layers on cobalt

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Electron-phonon coupling in graphene placed between magnetic Li and Si layers on cobalt. / Usachov, Dmitry Yu.; Fedorov, Alexander V.; Vilkov, Oleg Yu.; Ogorodnikov, Ilya I.; Kuznetsov, Mikhail V.; Grueneis, Alexander; Laubschat, Clemens; Vyalikh, Denis V.

In: Physical Review B, Vol. 97, No. 8, 085132, 21.02.2018.

Research output: Contribution to journal › Article › peer-review

Author

Usachov, Dmitry Yu. ; Fedorov, Alexander V. ; Vilkov, Oleg Yu. ; Ogorodnikov, Ilya I. ; Kuznetsov, Mikhail V. ; Grueneis, Alexander ; Laubschat, Clemens ; Vyalikh, Denis V. / Electron-phonon coupling in graphene placed between magnetic Li and Si layers on cobalt. In: Physical Review B. 2018 ; Vol. 97, No. 8.

BibTeX

@article{c1cecacd560d484bb3c3918aa6f59326,

title = "Electron-phonon coupling in graphene placed between magnetic Li and Si layers on cobalt",

abstract = "Using angle-resolved photoemission spectroscopy (ARPES), we study the electronic structure and electron-phonon coupling in a Li-doped graphene monolayer decoupled from the Co(0001) substrate by intercalation of silicon. Based on the photoelectron diffraction measurements, we disclose the structural properties of the Si/Co interface. Our density functional theory calculations demonstrate that in the studied Li/graphene/Si/Co system the magnetism of Co substrate induces notable magnetic moments on Li and Si atoms. At the same time graphene remains almost nonmagnetic and clamped between two magnetically active atomic layers with antiparallel magnetizations. ARPES maps of the graphene Fermi surface reveal strong electron doping, which may lead to superconductivity mediated by electron-phonon coupling (EPC). Analysis of the spectral function of photoelectrons reveals apparent anisotropy of EPC in the k space. These properties make the studied system tempting for studying the relation between superconductivity and magnetism in two-dimensional materials.",

keywords = "INTERCALATED BILAYER GRAPHENE, ANGLE-RESOLVED PHOTOEMISSION, METAL-SURFACES, SUPERCONDUCTIVITY, APPROXIMATION",

author = "Usachov, {Dmitry Yu.} and Fedorov, {Alexander V.} and Vilkov, {Oleg Yu.} and Ogorodnikov, {Ilya I.} and Kuznetsov, {Mikhail V.} and Alexander Grueneis and Clemens Laubschat and Vyalikh, {Denis V.}",

year = "2018",

month = feb,

day = "21",

doi = "10.1103/PhysRevB.97.085132",

language = "Английский",

volume = "97",

journal = "Physical Review B-Condensed Matter",

issn = "1098-0121",

publisher = "American Physical Society",

number = "8",

}

RIS

TY - JOUR

T1 - Electron-phonon coupling in graphene placed between magnetic Li and Si layers on cobalt

AU - Usachov, Dmitry Yu.

AU - Fedorov, Alexander V.

AU - Vilkov, Oleg Yu.

AU - Ogorodnikov, Ilya I.

AU - Kuznetsov, Mikhail V.

AU - Grueneis, Alexander

AU - Laubschat, Clemens

AU - Vyalikh, Denis V.

PY - 2018/2/21

Y1 - 2018/2/21

N2 - Using angle-resolved photoemission spectroscopy (ARPES), we study the electronic structure and electron-phonon coupling in a Li-doped graphene monolayer decoupled from the Co(0001) substrate by intercalation of silicon. Based on the photoelectron diffraction measurements, we disclose the structural properties of the Si/Co interface. Our density functional theory calculations demonstrate that in the studied Li/graphene/Si/Co system the magnetism of Co substrate induces notable magnetic moments on Li and Si atoms. At the same time graphene remains almost nonmagnetic and clamped between two magnetically active atomic layers with antiparallel magnetizations. ARPES maps of the graphene Fermi surface reveal strong electron doping, which may lead to superconductivity mediated by electron-phonon coupling (EPC). Analysis of the spectral function of photoelectrons reveals apparent anisotropy of EPC in the k space. These properties make the studied system tempting for studying the relation between superconductivity and magnetism in two-dimensional materials.

AB - Using angle-resolved photoemission spectroscopy (ARPES), we study the electronic structure and electron-phonon coupling in a Li-doped graphene monolayer decoupled from the Co(0001) substrate by intercalation of silicon. Based on the photoelectron diffraction measurements, we disclose the structural properties of the Si/Co interface. Our density functional theory calculations demonstrate that in the studied Li/graphene/Si/Co system the magnetism of Co substrate induces notable magnetic moments on Li and Si atoms. At the same time graphene remains almost nonmagnetic and clamped between two magnetically active atomic layers with antiparallel magnetizations. ARPES maps of the graphene Fermi surface reveal strong electron doping, which may lead to superconductivity mediated by electron-phonon coupling (EPC). Analysis of the spectral function of photoelectrons reveals apparent anisotropy of EPC in the k space. These properties make the studied system tempting for studying the relation between superconductivity and magnetism in two-dimensional materials.

KW - INTERCALATED BILAYER GRAPHENE

KW - ANGLE-RESOLVED PHOTOEMISSION

KW - METAL-SURFACES

KW - SUPERCONDUCTIVITY

KW - APPROXIMATION

UR - http://www.mendeley.com/research/electronphonon-coupling-graphene-placed-between-magnetic-li-si-layers-cobalt

U2 - 10.1103/PhysRevB.97.085132

DO - 10.1103/PhysRevB.97.085132

M3 - статья

VL - 97

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 1098-0121

IS - 8

M1 - 085132

ER -

ID: 33793495