Fractional Quantum Hall Effect with an Added Parallel Magnetic Field
- 4 September 1989
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 63 (10) , 1098-1101
- https://doi.org/10.1103/physrevlett.63.1098
Abstract
We have measured activation energies for fractional-quantum-Hall-effect (FQHE) states with a magnetic field added in the plane of the two-dimensional electron gas. Our data are incompatible with calculations of the expected finite-size corrections due to the added parallel field. Instead, the activation energies for some FQHE states depend linearly on the total magnetic field; others depend only on the perpendicular magnetic field. These dependencies indicate that spin-flip excitations are important for certain FQHE gaps.Keywords
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