Observation of Incompressibility at $\nu =4/11$ and $\nu =5/13$

Abstract

The region of filling factors $1/3<\nu <2/5$ is predicted to support new types of fractional quantum Hall states with topological order different from that of the Laughlin-Jain or the Moore-Read states. Incompressibility is a necessary condition for the formation of such novel topological states. We find that at 6.9~mK incompressibility develops only at $\nu =4/11$ and $5/13$, while the states at $\nu =6/17$ and $3/8$ remain compressible. Our observations at $\nu =4/11$ and $5/13$ are first steps towards understanding emergent topological order in these fractional quantum Hall states.

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Cited by in corpus (34)

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