Direct Spectroscopic Evidence of Magnetic Proximity Effect in MoS2 Monolayer on Graphene/Co

Standard

Direct Spectroscopic Evidence of Magnetic Proximity Effect in MoS₂ Monolayer on Graphene/Co. / Voroshnin, Vladimir ; Tarasov, Artem V.; Bokai, Kirill A.; Chikina, Alla; Senkovskiy, Boris V.; Ehlen, Niels; Usachov, Dmitry Yu; Grüneis, Alexander; Krivenkov, Maxim; Sánchez-Barriga, Jaime; Fedorov, Alexander.

In: ACS Nano, Vol. 16, No. 5, 20.04.2022, p. 7448-7456.

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

Author

Voroshnin, Vladimir ; Tarasov, Artem V. ; Bokai, Kirill A. ; Chikina, Alla ; Senkovskiy, Boris V. ; Ehlen, Niels ; Usachov, Dmitry Yu ; Grüneis, Alexander ; Krivenkov, Maxim ; Sánchez-Barriga, Jaime ; Fedorov, Alexander. / Direct Spectroscopic Evidence of Magnetic Proximity Effect in MoS₂ Monolayer on Graphene/Co. In: ACS Nano. 2022 ; Vol. 16, No. 5. pp. 7448-7456.

BibTeX

@article{5281e037d7da40eb97c4ea646f2d9457,

title = "Direct Spectroscopic Evidence of Magnetic Proximity Effect in MoS2 Monolayer on Graphene/Co",

abstract = "A magnetic field modifies optical properties and provides valley splitting in a molybdenum disulfide (MoS2) monolayer. Here we demonstrate a scalable approach to the epitaxial synthesis of MoS2 monolayer on a magnetic graphene/Co system. Using spin- and angle-resolved photoemission spectroscopy we observe a magnetic proximity effect that causes a 20 meV spin-splitting at the point and canting of spins at the {\=K} point in the valence band toward the in-plane direction of cobalt magnetization. Our density functional theory calculations reveal that the in-plane spin component at {\=K} is localized on Co atoms in the valence band, while in the conduction band it is localized on the MoS2 layer. The calculations also predict a 16 meV spin-splitting at the point and 8 meV {\=K} -K′¯ valley asymmetry for an out-of-plane magnetization. These findings suggest control over optical transitions in MoS2 via Co magnetization. Our estimations show that the magnetic proximity effect is equivalent to the action of the magnetic field as large as 100 T. ",

keywords = "graphene, magnetic proximity effect, monolayer, MoS, spin-resolved ARPES, MoS2",

author = "Vladimir Voroshnin and Tarasov, {Artem V.} and Bokai, {Kirill A.} and Alla Chikina and Senkovskiy, {Boris V.} and Niels Ehlen and Usachov, {Dmitry Yu} and Alexander Gr{\"u}neis and Maxim Krivenkov and Jaime S{\'a}nchez-Barriga and Alexander Fedorov",

note = "Publisher Copyright: {\textcopyright} 2022 American Chemical Society.",

year = "2022",

month = apr,

day = "20",

doi = "10.1021/acsnano.1c10391",

language = "English",

volume = "16",

pages = "7448--7456",

journal = "ACS Nano",

issn = "1936-0851",

publisher = "American Chemical Society",

number = "5",

}

RIS

TY - JOUR

T1 - Direct Spectroscopic Evidence of Magnetic Proximity Effect in MoS2 Monolayer on Graphene/Co

AU - Voroshnin, Vladimir

AU - Tarasov, Artem V.

AU - Bokai, Kirill A.

AU - Chikina, Alla

AU - Senkovskiy, Boris V.

AU - Ehlen, Niels

AU - Usachov, Dmitry Yu

AU - Grüneis, Alexander

AU - Krivenkov, Maxim

AU - Sánchez-Barriga, Jaime

AU - Fedorov, Alexander

PY - 2022/4/20

Y1 - 2022/4/20

N2 - A magnetic field modifies optical properties and provides valley splitting in a molybdenum disulfide (MoS2) monolayer. Here we demonstrate a scalable approach to the epitaxial synthesis of MoS2 monolayer on a magnetic graphene/Co system. Using spin- and angle-resolved photoemission spectroscopy we observe a magnetic proximity effect that causes a 20 meV spin-splitting at the point and canting of spins at the K̄ point in the valence band toward the in-plane direction of cobalt magnetization. Our density functional theory calculations reveal that the in-plane spin component at K̄ is localized on Co atoms in the valence band, while in the conduction band it is localized on the MoS2 layer. The calculations also predict a 16 meV spin-splitting at the point and 8 meV K̄ -K′¯ valley asymmetry for an out-of-plane magnetization. These findings suggest control over optical transitions in MoS2 via Co magnetization. Our estimations show that the magnetic proximity effect is equivalent to the action of the magnetic field as large as 100 T.

AB - A magnetic field modifies optical properties and provides valley splitting in a molybdenum disulfide (MoS2) monolayer. Here we demonstrate a scalable approach to the epitaxial synthesis of MoS2 monolayer on a magnetic graphene/Co system. Using spin- and angle-resolved photoemission spectroscopy we observe a magnetic proximity effect that causes a 20 meV spin-splitting at the point and canting of spins at the K̄ point in the valence band toward the in-plane direction of cobalt magnetization. Our density functional theory calculations reveal that the in-plane spin component at K̄ is localized on Co atoms in the valence band, while in the conduction band it is localized on the MoS2 layer. The calculations also predict a 16 meV spin-splitting at the point and 8 meV K̄ -K′¯ valley asymmetry for an out-of-plane magnetization. These findings suggest control over optical transitions in MoS2 via Co magnetization. Our estimations show that the magnetic proximity effect is equivalent to the action of the magnetic field as large as 100 T.

KW - graphene

KW - magnetic proximity effect

KW - monolayer

KW - MoS

KW - spin-resolved ARPES

KW - MoS2

UR - http://www.scopus.com/inward/record.url?scp=85129233764&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/734b6bd3-91bf-3c97-869a-809c2167d9b1/

U2 - 10.1021/acsnano.1c10391

DO - 10.1021/acsnano.1c10391

M3 - Article

AN - SCOPUS:85129233764

VL - 16

SP - 7448

EP - 7456

JO - ACS Nano

JF - ACS Nano

SN - 1936-0851

IS - 5

ER -

ID: 97909544