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| 001 | 897249 | ||
| 005 | 20230522110535.0 | ||
| 024 | 7 | _ | |a 10.1002/qute.202100083 |2 doi |
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| 100 | 1 | _ | |a Leis, Arthur |0 P:(DE-Juel1)168208 |b 0 |e Corresponding author |
| 245 | _ | _ | |a Lifting the Spin‐Momentum Locking in Ultra‐Thin Topological Insulator Films |
| 260 | _ | _ | |a Weinheim |c 2021 |b Wiley-VCH Verlag |
| 336 | 7 | _ | |a article |2 DRIVER |
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| 520 | _ | _ | |a 3D topological insulators are known to carry 2D Dirac-like topological surface states in which spin-momentum locking prohibits backscattering. When thinned down to a few nanometers, the hybridization between the topological surface states at the top and bottom surfaces results in a topological quantum phase transition, which can lead to the emergence of a quantum spin Hall phase. Here, the thickness-dependent transport properties across the quantum phase transition are studied on the example of (Bi0.16Sb0.84.)2Te3 films, with a four-tip scanning tunneling microscope. The findings reveal an exponential drop of the conductivity below the critical thickness. The steepness of this drop indicates the presence of spin-conserving backscattering between the top and bottom surface states, effectively lifting the spin-momentum locking and resulting in the opening of a gap at the Dirac point. The experiments provide a crucial step toward the detection of quantum spin Hall states in transport measurements. |
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| 700 | 1 | _ | |a Tautz, F. Stefan |0 P:(DE-Juel1)128791 |b 8 |
| 773 | _ | _ | |a 10.1002/qute.202100083 |g p. 2100083 - |0 PERI:(DE-600)2885525-5 |n 11 |p 2100083 - |t Advanced quantum technologies |v 4 |y 2021 |x 2511-9044 |
| 856 | 4 | _ | |u https://juser.fz-juelich.de/record/897249/files/qute.202100083.pdf |y OpenAccess |
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