Abstract
Recent experiments use Fabry-Perot (FP) interferometry to claim that the ν=5/2 quantum Hall state exhibits non-Abelian topological order. We note that the experiments appear inconsistent with a model neglecting bulk-edge Coulomb coupling and Majorana tunneling, so we reexamine the theory of FP devices. Even a moderate Coulomb coupling may strongly affect some fractional plateaus, but very weakly affect others, allowing us to model the data over a wide range of plateaus. While experiments are consistent with the ν=5/2 state harboring Moore-Read topological order, they may have measured Coulomb effects rather than an "even-odd effect" due to non-Abelian braiding.
Original language | English |
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Article number | 126807 |
Number of pages | 5 |
Journal | Physical Review Letters |
Volume | 115 |
Issue number | 12 |
DOIs | |
Publication status | Published - 18 Sept 2015 |
ASJC Scopus subject areas
- General Physics and Astronomy