Speaker
Loic Herviou
(Ecole Polytechnique Fédérale de Lausanne)
Description
The nature of the experimentally-measured fractional conductance plateau at filling 5/2 in Quantum Hall states remains an open question. After a decade of debate, the theoretical consensus settled on the non-Abelian Antipfaffian while recent experimental results measured an incompatible quantized thermal conductance of 5/2.
We revisit previous theoretical approaches with a more careful treatment of the Landau level mixing, the parameter controlling the interaction between different Landau levels. I will present the challenges behind this approach, and our main results: an inversion of the gaps at mixings well below the experimental regime and the important role of frozen spin degrees of freedom.
| Theoretical Work | Theory |
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Authors
Frédéric Mila
(École Polytechnique Fédérale de Lausanne)
Loic Herviou
(Ecole Polytechnique Fédérale de Lausanne)
