Abstract
We measured the activation energy of the Skyrmion excitations in the monolayer quantum Hall (QH) state at the Landau-level filling factor ν = 1 and in the bilayer QH state at ν = 2. The number of flipped spins Ns changes from 7 to 1 in the monolayer sample and in the bilayer sample with small tunneling energy gap, while Ns changes from 14 to 7 and finally to 1 in the bilayer sample with large tunneling energy gap. These experimental data suggest the existence of the preferred number of flipped spins Ns = 7 for a Skyrmion-pair excitation.
Original language | English |
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Pages (from-to) | 169-172 |
Number of pages | 4 |
Journal | Physica B: Condensed Matter |
Volume | 298 |
Issue number | 1-4 |
DOIs | |
Publication status | Published - 2001 Apr |
Externally published | Yes |
Keywords
- GaAs/AlGaAs
- Quantum Hall effect
- Skyrmion
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering