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Microwave spectroscopic observation of a Wigner solid within the ν=1/2 fractional quantum Hall effect
- Source :
- Physical Review B. 95
- Publication Year :
- 2017
- Publisher :
- American Physical Society (APS), 2017.
-
Abstract
- The fractional quantum Hall effect (FQHE) states at half integer Landau fillings ($\nu$) have long been of great interest, since they have correlations that differ from those of the fundamental Laughlin states found at odd denominators. At $\nu=1/2$ the FQHE has been observed in wide or double quantum wells, and is ascribed to the two-component Halperin-Laughlin $\Psi_{331}$ state. $\Psi_{331}$ excitations carry charge $\pm e/4$, like the carriers of $\nu=5/2$ states which are of interest in quantum computation. Further, such an excitation (quasiparticle or -hole) of $\Psi_{331}$ has unequal, opposite charge in the top and bottom layers, and hence an up or down dipole moment. Here we report evidence for a Wigner solid (WS) of such dipolar quasiholes from a quantitative study of the microwave spectra of a wide quantum well (WQW) at $\nu$ close to 1/2.
- Subjects :
- Physics
Condensed matter physics
Charge (physics)
02 engineering and technology
Condensed Matter::Mesoscopic Systems and Quantum Hall Effect
021001 nanoscience & nanotechnology
01 natural sciences
Dipole
Quantum mechanics
0103 physical sciences
Fractional quantum Hall effect
Quasiparticle
Half-integer
010306 general physics
0210 nano-technology
Excitation
Quantum well
Quantum computer
Subjects
Details
- ISSN :
- 24699969 and 24699950
- Volume :
- 95
- Database :
- OpenAIRE
- Journal :
- Physical Review B
- Accession number :
- edsair.doi...........849a39c4522f375e657db4a2449d3d1a