Hauptseite > Publikationsdatenbank > Orbital Complexity in Intrinsic Magnetic Topological Insulators MnBi 4 Te 7 and MnBi 6 Te 10 > print

001     903035
005     20220103172048.0
024 7 _ |a 10.1103/PhysRevLett.126.176403
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100 1 _ |a Vidal, R. C.
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245 _ _ |a Orbital Complexity in Intrinsic Magnetic Topological Insulators MnBi 4 Te 7 and MnBi 6 Te 10
260 _ _ |a College Park, Md.
|c 2021
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520 _ _ |a Using angle-resolved photoelectron spectroscopy (ARPES), we investigate the surface electronic structure of the magnetic van der Waals compounds MnBi4Te7 and MnBi6Te10, the n=1 and 2 members of a modular (Bi2Te3)n(MnBi2Te4) series, which have attracted recent interest as intrinsic magnetic topological insulators. Combining circular dichroic, spin-resolved and photon-energy-dependent ARPES measurements with calculations based on density functional theory, we unveil complex momentum-dependent orbital and spin textures in the surface electronic structure and disentangle topological from trivial surface bands. We find that the Dirac-cone dispersion of the topologial surface state is strongly perturbed by hybridization with valence-band states for Bi2Te3-terminated surfaces but remains preserved for MnBi2Te4-terminated surfaces. Our results firmly establish the topologically nontrivial nature of these magnetic van der Waals materials and indicate that the possibility of realizing a quantized anomalous Hall conductivity depends on surface termination.
536 _ _ |a 5211 - Topological Matter (POF4-521)
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700 1 _ |a Bentmann, H.
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700 1 _ |a Facio, J. I.
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700 1 _ |a Heider, Tristan
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700 1 _ |a Kagerer, P.
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700 1 _ |a Fornari, C. I.
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700 1 _ |a Peixoto, T. R. F.
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700 1 _ |a Figgemeier, T.
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700 1 _ |a Jung, S.
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700 1 _ |a Cacho, C.
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700 1 _ |a Büchner, B.
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700 1 _ |a van den Brink, J.
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700 1 _ |a Schneider, C. M.
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700 1 _ |a Plucinski, L.
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700 1 _ |a Schwier, E. F.
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700 1 _ |a Shimada, K.
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700 1 _ |a Richter, M.
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700 1 _ |a Isaeva, A.
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700 1 _ |a Reinert, F.
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773 _ _ |a 10.1103/PhysRevLett.126.176403
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