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Rotons of composite fermions: Comparison between theory and experiment
- Source :
- Physical Review B. 61:13064-13072
- Publication Year :
- 2000
- Publisher :
- American Physical Society (APS), 2000.
-
Abstract
- Department of Physics, 104 Davey Laboratory, The Pennsylvania State University, University Park, Pennsylvania 16802(February 1, 2008)A major obstacle toward a quantitative verification, by comparison to experiment, of the theory ofthe excitations of the fractional quantum Hall effect has been the lack of a proper understandingof disorder. We circumvent this problem by studying the neutral magneto-roton excitations, whoseenergy is expected to be largely insensitive to disorder. The calculated energies of the roton at1/3, 2/5 and 3/7 fillings of the lowest Landau level are in good agreement with those measuredexperimentally.PACS numbers:71.10.Pm,73.40.Hm
- Subjects :
- Physics
02 engineering and technology
Landau quantization
Quantum Hall effect
021001 nanoscience & nanotechnology
Roton
7. Clean energy
01 natural sciences
Quantum spin Hall effect
Quantum mechanics
0103 physical sciences
Fractional quantum Hall effect
Composite fermion
010306 general physics
0210 nano-technology
Subjects
Details
- ISSN :
- 10953795 and 01631829
- Volume :
- 61
- Database :
- OpenAIRE
- Journal :
- Physical Review B
- Accession number :
- edsair.doi...........ac01eb0275b5deb5145177acd614eb69