DUFOULEUR, J.; VEYRAT, L.; TEICHGRÄBER, A.; NEUHAUS, S.; NOWKA, C.; HAMPEL, S.; CAYSSOL, Jérôme; SCHUMANN, J.; EICHLER, B.; SCHMIDT, O. G.; BÜCHNER, B.; GIRAUD, R.

doi:10.1103/PhysRevLett.110.186806

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DUFOULEUR, J.
Leibniz Institute for Solid State and Materials Research [IFW Dresden]

VEYRAT, L.
Leibniz Institute for Solid State and Materials Research [IFW Dresden]

TEICHGRÄBER, A.
Leibniz Institute for Solid State and Materials Research [IFW Dresden]

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Article de revue

Ce document a été publié dans

Physical Review Letters. 2013-05-03, vol. 110, n° 18, p. 186806 (1-5)

American Physical Society

Résumé en anglais

Quantum coherent transport of Dirac fermions in a mesoscopic nanowire of the 3D topological insulator Bi2Se3 is studied in the weak-disorder limit. At very low temperatures, many harmonics are evidenced in the Fourier transform of Aharonov-Bohm oscillations, revealing the long phase-coherence length of surface states. Remarkably, from their exponential temperature dependence, we infer an unusual 1/T power law for the phase coherence length. This decoherence is typical for quasi-ballistic fermions weakly coupled to the dynamics of their environment.< Réduire

Mots clés en anglais

Quantum wires

Phases: geometric

dynamic or topological

Electronic transport in mesoscopic systems

DOI

http://dx.doi.org/10.1103/PhysRevLett.110.186806

Projet Européen

TOPOLOGICAL EFFECTS IN MATTER WITH STRONG SPIN-ORBIT COUPLING

Project ANR

Transport électronique dans les isolants topologiques

Origine

Importé de hal

Unités de recherche

Laboratoire Ondes et Matière d'Aquitaine (LOMA) - UMR 5798