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Quasi-Particle Properties from Tunneling in the v = 5/2 Fractional Quantum Hall State.
- Source :
-
Science . 5/16/2008, Vol. 320 Issue 5878, p899-902. 4p. 17 Graphs. - Publication Year :
- 2008
-
Abstract
- Quasi-particles with fractional charge and statistics, as well as modified Coulomb interactions, exist in a two-dimensional electron system in the fractional quantum Hall (FQH) regime. Theoretical models of the FQH state at filling fraction v = 5/2 make the further prediction that the wave function can encode the interchange of two quasi-particles, making this state relevant for topological quantum computing. We show that bias-dependent tunneling across a narrow constriction at v = 5/2 exhibits temperature scaling and, from fits to the theoretical scaling form, extract values for the effective charge and the interaction parameter of the quasi-particles. Ranges of values obtained are consistent with those predicted by certain models of the 5/2 state. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00368075
- Volume :
- 320
- Issue :
- 5878
- Database :
- Academic Search Index
- Journal :
- Science
- Publication Type :
- Academic Journal
- Accession number :
- 32604322
- Full Text :
- https://doi.org/10.1126/science.1157560