Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Cubic Rashba Effect in the Surface Spin Structure of Rare-Earth Ternary Materials. / Usachov, D. Yu; Nechaev, I. A.; Poelchen, G.; Güttler, M.; Krasovskii, E. E.; Schulz, S.; Generalov, A.; Kliemt, K.; Kraiker, A.; Krellner, C.; Kummer, K.; Danzenbächer, S.; Laubschat, C.; Weber, A. P.; Sánchez-Barriga, J.; Chulkov, E. V.; Santander-Syro, A. F.; Imai, T.; Miyamoto, K.; Okuda, T.; Vyalikh, D. V.
в: Physical Review Letters, Том 124, № 23, 237202, 12.06.2020.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Cubic Rashba Effect in the Surface Spin Structure of Rare-Earth Ternary Materials
AU - Usachov, D. Yu
AU - Nechaev, I. A.
AU - Poelchen, G.
AU - Güttler, M.
AU - Krasovskii, E. E.
AU - Schulz, S.
AU - Generalov, A.
AU - Kliemt, K.
AU - Kraiker, A.
AU - Krellner, C.
AU - Kummer, K.
AU - Danzenbächer, S.
AU - Laubschat, C.
AU - Weber, A. P.
AU - Sánchez-Barriga, J.
AU - Chulkov, E. V.
AU - Santander-Syro, A. F.
AU - Imai, T.
AU - Miyamoto, K.
AU - Okuda, T.
AU - Vyalikh, D. V.
N1 - Funding Information: This work was supported by the German Research Foundation (Grants No. KR-3831/5-1, No. LA655/20-1, GRK1621, Fermi-NESt No. ANR-16-CE92-0018, and SFB1143, project-id 247310070) and the Spanish Ministry of Science, Innovation, and Universities (Grant Nos. FIS2016-76617-P and MAT-2017-88374-P). We also acknowledge funding from the Department of Education of the Basque government (Grant No. IT1164-19), St. Petersburg State University (Project ID 51126254), and the Russian Foundation for Basic Research (Grant No. 20-32-70127). The SR-ARPES experiments at HiSOR were performed with the approval of the Proposal Assessing Committee of the Hiroshima Synchrotron Radiation Center (Proposal No. 18BG023). We also acknowledge the Impuls-und Vernetzungsfonds der Helmholtz Gemeinschaft (Grant No. HRSF-0067). Publisher Copyright: © 2020 American Physical Society. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/6/12
Y1 - 2020/6/12
N2 - Spin-orbit interaction and structure inversion asymmetry in combination with magnetic ordering is a promising route to novel materials with highly mobile spin-polarized carriers at the surface. Spin-resolved measurements of the photoemission current from the Si-terminated surface of the antiferromagnet TbRh2Si2 and their analysis within an ab initio one-step theory unveil an unusual triple winding of the electron spin along the fourfold-symmetric constant energy contours of the surface states. A two-band k·p model is presented that yields the triple winding as a cubic Rashba effect. The curious in-plane spin-momentum locking is remarkably robust and remains intact across a paramagnetic-antiferromagnetic transition in spite of spin-orbit interaction on Rh atoms being considerably weaker than the out-of-plane exchange field due to the Tb 4f moments.
AB - Spin-orbit interaction and structure inversion asymmetry in combination with magnetic ordering is a promising route to novel materials with highly mobile spin-polarized carriers at the surface. Spin-resolved measurements of the photoemission current from the Si-terminated surface of the antiferromagnet TbRh2Si2 and their analysis within an ab initio one-step theory unveil an unusual triple winding of the electron spin along the fourfold-symmetric constant energy contours of the surface states. A two-band k·p model is presented that yields the triple winding as a cubic Rashba effect. The curious in-plane spin-momentum locking is remarkably robust and remains intact across a paramagnetic-antiferromagnetic transition in spite of spin-orbit interaction on Rh atoms being considerably weaker than the out-of-plane exchange field due to the Tb 4f moments.
UR - http://www.scopus.com/inward/record.url?scp=85087182031&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.124.237202
DO - 10.1103/PhysRevLett.124.237202
M3 - Article
C2 - 32603174
AN - SCOPUS:85087182031
VL - 124
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 23
M1 - 237202
ER -
ID: 71017697