Journal
PHYSICAL REVIEW B
Volume 83, Issue 7, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.83.075315
Keywords
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Funding
- Italian MIUR [RBID08B3FM]
- Universita Italo Francese/Universite Franco Italienne (UIF/UFI)
- EU
- French Government
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We investigate the coherent mixing of copropagating edge channels in a quantum Hall bar produced by step potentials. In the case of two edge channels it is found that, although a single step induces only a few percent mixing, a series of steps could yield 50% mixing. In addition, a strong mixing is found when the potential height of a single step allows a different number of edge channels on the two sides of the step. Charge density probability has been also calculated even for the case where the step is smoothened.
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