Journal
PHYSICAL REVIEW LETTERS
Volume 101, Issue 18, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.101.186806
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Funding
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Canadian Institute for Advanced Research (CIFAR)
- Canada Fund for Innovation (CFI)
- Canada Research Chairs program
- Alfred P. Sloan Foundation
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Using a tilted-field geometry, the effect of an in-plane magnetic field on the even denominator nu = 5/2 fractional quantum Hall state is studied. The energy gap of the similar to 5/2 state is found to collapse linearly with the in-plane magnetic field above similar to 0: 5 T. In contrast, a strong enhancement of the gap is observed for the nu = 7/3 state. The radically distinct tilted-field behavior between the two states is discussed in terms of Zeeman and magneto-orbital coupling within the context of the proposed Moore-Read Pfaffian wave function for the 5 2 fractional quantum Hall effect.
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