Abstract
We have measured the temperature dependence of the transport coefficient ρxa at the lowest Landau level fractional quantum Hall effect filling factors v = ρ/(2p ± 1), up to ρ = 5, in a high-quality two-dimensional electron system. Our data establish that the gap energies separating the excitations from their quantum liquid ground states are linear with ΔB, the magnetic field deviation from exact half-filling. We interpret this linearity as evidence for Landau level quantization of composite particles and deduce the effective mass and the scattering times of the particles.
Original language | English (US) |
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Pages (from-to) | 18-22 |
Number of pages | 5 |
Journal | Surface Science |
Volume | 305 |
Issue number | 1-3 |
DOIs | |
State | Published - Mar 20 1994 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Materials Chemistry