The change of the de Haas-van Alphen (dHvA) oscillation between the low-field spin-density-wave (SDW) phase and the high-field (H ≥ 23 T) metallic phase of the organic conductor α-(BEDT-TTF)2KHg(SCN)4 is explained in terms of a model of the magnetic breakdown (MB) and a reconstructed Fermi surface by SDW. On the reconstructed Fermi surface, the scattering time obtained by fitting the standard Lifshitz-Kosevich formulation to the dHvA oscillations is affected by the MB giving the additional field-dependent effect. Furthermore, the evaluation of the effective mass needs to consider the additional temperature-dependent factor being due to the MB gap which may change intrinsically and/or thermally with temperature.
- De Haas-van Alphen oscillation
- Effective mass
- Organic conductor
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering