Title :

Topological protection of electronic states against disorder probed by their magnetic moment

Author(s) :

Tadjine, Athmane [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Delerue, Christophe [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]

Journal title :

Physical Review B

Pages :

235426

Publisher :

American Physical Society

Publication date :

2017

ISSN :

2469-9950

HAL domain(s) :

Physique [physics]/Matière Condensée [cond-mat]

English abstract : [en]

Magnetic moments (MMs) of electrons in topological insulator quantum dots (TI-QDs) are investigated using a model system, namely a multiorbital honeycomb lattice. Their nature and orientation with respect to the spin are ...
Show more >Magnetic moments (MMs) of electrons in topological insulator quantum dots (TI-QDs) are investigated using a model system, namely a multiorbital honeycomb lattice. Their nature and orientation with respect to the spin are studied. We show that large MMs are not specific to edge states in nontrivial gaps, as band states can host even larger MMs. However, we demonstrate that edge-state and band-state MMs have a totally different sensitivity to disorder. Measuring the MMs in TI-QDs is therefore a direct way to probe the nontrivial to trivial topological transition under increasing disorder.Show less >

Language :

Anglais

Popular science :

Non

ANR Project :

Super-réseau d'antipoints de Dirac pour les électrons dans les semiconducteurs III-V

Collections :

• Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL