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| 001 | 825129 | ||
| 005 | 20230426083140.0 | ||
| 024 | 7 | _ | |a 10.1103/PhysRevB.94.075137 |2 doi |
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| 024 | 7 | _ | |a 2469-9950 |2 ISSN |
| 024 | 7 | _ | |a 2469-9969 |2 ISSN |
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| 037 | _ | _ | |a FZJ-2016-07606 |
| 082 | _ | _ | |a 530 |
| 100 | 1 | _ | |a Sessi, P. |0 P:(DE-HGF)0 |b 0 |e Corresponding author |
| 245 | _ | _ | |a Superparamagnetism-induced mesoscopic electron focusing in topological insulators |
| 260 | _ | _ | |a Woodbury, NY |c 2016 |b Inst. |
| 336 | 7 | _ | |a article |2 DRIVER |
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| 520 | _ | _ | |a Recently it has been shown that surface magnetic doping of topological insulators induces backscattering of Dirac states which are usually protected by time-reversal symmetry [Sessi et al., Nat. Commun. 5, 5349 (2014)]. Here we report on quasiparticle interference measurements where, by improved Fermi level tuning, strongly focused interference patterns on surface Mn-doped Bi2Te3 could be directly observed by means of scanning tunneling microscopy at 4 K. Ab initio and model calculations reveal that their mesoscopic coherence relies on two prerequisites: (i) a hexagonal Fermi surface with large parallel segments (nesting) and (ii) magnetic dopants which couple to a high-spin state. Indeed, x-ray magnetic circular dichroism shows superparamagnetism even at very dilute Mn concentrations. Our findings provide evidence of strongly anisotropic Dirac-fermion-mediated interactions and demonstrate how spin information can be transmitted over long distances, allowing the design of experiments and devices based on coherent quantum effects in topological insulators. |
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| 536 | _ | _ | |a Scattering of topologically protected states off defects in topological insulators (jara0078_20131101) |0 G:(DE-Juel1)jara0078_20131101 |c jara0078_20131101 |f Scattering of topologically protected states off defects in topological insulators |x 2 |
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| 773 | 1 | 8 | |a 10.1103/physrevb.94.075137 |b American Physical Society (APS) |d 2016-08-17 |n 7 |p 075137 |3 journal-article |2 Crossref |t Physical Review B |v 94 |y 2016 |x 2469-9950 |
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