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Spin structure of spin-orbit split surface states in a magnetic material revealed by spin-integrated photoemission. / Usachov, D. Yu; Güttler, M.; Schulz, S.; Poelchen, G.; Seiro, S.; Kliemt, K.; Kummer, K.; Krellner, C.; Laubschat, C.; Chulkov, E. V.; Vyalikh, D. V.

In: Physical Review B, Vol. 101, No. 24, 245140, 15.06.2020.

Research output: Contribution to journalArticlepeer-review

Harvard

Usachov, DY, Güttler, M, Schulz, S, Poelchen, G, Seiro, S, Kliemt, K, Kummer, K, Krellner, C, Laubschat, C, Chulkov, EV & Vyalikh, DV 2020, 'Spin structure of spin-orbit split surface states in a magnetic material revealed by spin-integrated photoemission', Physical Review B, vol. 101, no. 24, 245140. https://doi.org/10.1103/PhysRevB.101.245140

APA

Usachov, D. Y., Güttler, M., Schulz, S., Poelchen, G., Seiro, S., Kliemt, K., Kummer, K., Krellner, C., Laubschat, C., Chulkov, E. V., & Vyalikh, D. V. (2020). Spin structure of spin-orbit split surface states in a magnetic material revealed by spin-integrated photoemission. Physical Review B, 101(24), [245140]. https://doi.org/10.1103/PhysRevB.101.245140

Vancouver

Author

Usachov, D. Yu ; Güttler, M. ; Schulz, S. ; Poelchen, G. ; Seiro, S. ; Kliemt, K. ; Kummer, K. ; Krellner, C. ; Laubschat, C. ; Chulkov, E. V. ; Vyalikh, D. V. / Spin structure of spin-orbit split surface states in a magnetic material revealed by spin-integrated photoemission. In: Physical Review B. 2020 ; Vol. 101, No. 24.

BibTeX

@article{c9b72333b1354a5abae71068f32b4223,
title = "Spin structure of spin-orbit split surface states in a magnetic material revealed by spin-integrated photoemission",
abstract = "The emergence of ferromagnetism in Rashba systems, where the evolving exchange interaction enters into competition with spin-orbit coupling, leads to a nontrivial spin-polarized electronic landscape with an intricate momentum-dependent spin structure, which is challenging to unveil. Here, we show a way to disentangle the contributions from the effective spin-orbit and exchange fields and thus to gain knowledge of the spin structure in ferromagnetic Rashba materials, which is required for spintronic applications. Our approach is based exclusively on spin-integrated photoemission measurements combined with a two-band modeling. As an example, we consider the mixed-valent material EuIr2Si2 which, while being nonmagnetic in the bulk, reveals strong ferromagnetism at the iridium-silicide surface where both spin-orbit and exchange magnetic interactions coexist. The combined effect of these interactions causes a complex band dispersion of the surface state which can be observed in photoemission experiments. Our method allows us to comprehensively unravel the surface-state spin structure driven by spin-orbit coupling at the ferromagnetic surface. This approach opens up opportunities to characterize the spin structure of ferromagnetic Rashba materials, especially where dedicated spin-resolved measurements remain challenging.",
keywords = "CIRCULAR-DICHROISM, SPINTRONICS",
author = "Usachov, {D. Yu} and M. G{\"u}ttler and S. Schulz and G. Poelchen and S. Seiro and K. Kliemt and K. Kummer and C. Krellner and C. Laubschat and Chulkov, {E. V.} and Vyalikh, {D. V.}",
note = "Funding Information: This work was supported by Saint Petersburg State University (Grant No. ID 51126254) and the Russian Foundation for Basic Research (Grant No. 20-32-70127). We acknowledge financial support from the Spanish Ministry of Economy (No. MAT-2017-88374-P) and the German Research Foundation (DFG) through Grants No. LA655/20-1, No. KR3831/5-1, and Fermi-NEst. We acknowledge Diamond Light Source for access to beamline I05 (Proposals No. SI18844-1 and No. SI17761-1). We thank I. Nechaev for fruitful discussions. Publisher Copyright: {\textcopyright} 2020 American Physical Society. {\textcopyright}2020 American Physical Society. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.",
year = "2020",
month = jun,
day = "15",
doi = "10.1103/PhysRevB.101.245140",
language = "English",
volume = "101",
journal = "Physical Review B-Condensed Matter",
issn = "1098-0121",
publisher = "American Physical Society",
number = "24",

}

RIS

TY - JOUR

T1 - Spin structure of spin-orbit split surface states in a magnetic material revealed by spin-integrated photoemission

AU - Usachov, D. Yu

AU - Güttler, M.

AU - Schulz, S.

AU - Poelchen, G.

AU - Seiro, S.

AU - Kliemt, K.

AU - Kummer, K.

AU - Krellner, C.

AU - Laubschat, C.

AU - Chulkov, E. V.

AU - Vyalikh, D. V.

N1 - Funding Information: This work was supported by Saint Petersburg State University (Grant No. ID 51126254) and the Russian Foundation for Basic Research (Grant No. 20-32-70127). We acknowledge financial support from the Spanish Ministry of Economy (No. MAT-2017-88374-P) and the German Research Foundation (DFG) through Grants No. LA655/20-1, No. KR3831/5-1, and Fermi-NEst. We acknowledge Diamond Light Source for access to beamline I05 (Proposals No. SI18844-1 and No. SI17761-1). We thank I. Nechaev for fruitful discussions. Publisher Copyright: © 2020 American Physical Society. ©2020 American Physical Society. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2020/6/15

Y1 - 2020/6/15

N2 - The emergence of ferromagnetism in Rashba systems, where the evolving exchange interaction enters into competition with spin-orbit coupling, leads to a nontrivial spin-polarized electronic landscape with an intricate momentum-dependent spin structure, which is challenging to unveil. Here, we show a way to disentangle the contributions from the effective spin-orbit and exchange fields and thus to gain knowledge of the spin structure in ferromagnetic Rashba materials, which is required for spintronic applications. Our approach is based exclusively on spin-integrated photoemission measurements combined with a two-band modeling. As an example, we consider the mixed-valent material EuIr2Si2 which, while being nonmagnetic in the bulk, reveals strong ferromagnetism at the iridium-silicide surface where both spin-orbit and exchange magnetic interactions coexist. The combined effect of these interactions causes a complex band dispersion of the surface state which can be observed in photoemission experiments. Our method allows us to comprehensively unravel the surface-state spin structure driven by spin-orbit coupling at the ferromagnetic surface. This approach opens up opportunities to characterize the spin structure of ferromagnetic Rashba materials, especially where dedicated spin-resolved measurements remain challenging.

AB - The emergence of ferromagnetism in Rashba systems, where the evolving exchange interaction enters into competition with spin-orbit coupling, leads to a nontrivial spin-polarized electronic landscape with an intricate momentum-dependent spin structure, which is challenging to unveil. Here, we show a way to disentangle the contributions from the effective spin-orbit and exchange fields and thus to gain knowledge of the spin structure in ferromagnetic Rashba materials, which is required for spintronic applications. Our approach is based exclusively on spin-integrated photoemission measurements combined with a two-band modeling. As an example, we consider the mixed-valent material EuIr2Si2 which, while being nonmagnetic in the bulk, reveals strong ferromagnetism at the iridium-silicide surface where both spin-orbit and exchange magnetic interactions coexist. The combined effect of these interactions causes a complex band dispersion of the surface state which can be observed in photoemission experiments. Our method allows us to comprehensively unravel the surface-state spin structure driven by spin-orbit coupling at the ferromagnetic surface. This approach opens up opportunities to characterize the spin structure of ferromagnetic Rashba materials, especially where dedicated spin-resolved measurements remain challenging.

KW - CIRCULAR-DICHROISM

KW - SPINTRONICS

UR - http://www.scopus.com/inward/record.url?scp=85086997242&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.101.245140

DO - 10.1103/PhysRevB.101.245140

M3 - Article

AN - SCOPUS:85086997242

VL - 101

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 1098-0121

IS - 24

M1 - 245140

ER -

ID: 70717071