We determine the spin susceptibility χ in the weak interaction regime of a tunable, high quality, two-dimensional electron system in a GaAs AlGaAs heterostructure. The band structure effects, modifying mass and g -factor, are carefully taken into accounts since they become appreciable for the large electron densities of the weak interaction regime. When properly normalized, χ decreases monotonically from 3 to 1.1 with increasing density over our experimental range from 0.1 to 4× 1011 cm-2. In the high density limit, χ tends correctly towards χ→1 and compare well with recent theory.
|Original language||English (US)|
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|State||Published - Feb 27 2006|
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics