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 |
|---|---|
| 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 1 |
| 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
Fingerprint Dive into the research topics of 'Preferred number of flipped spins in Skyrmion excitation'. Together they form a unique fingerprint.
Cite this
Kumada, N., Sawada, A., Ezawa, Z. F., Azuhata, H., Nagahama, S., Muraki, K., Saku, T., & Hirayama, Y. (2001). Preferred number of flipped spins in Skyrmion excitation. Physica B: Condensed Matter, 298(1-4), 169-172. https://doi.org/10.1016/S0921-4526(01)00294-0