Determination of thegfactor from unsplit Shubnikov-de Haas oscillations inn−InSb

Effective $g$-factor values for $n-\mathrm{I}\mathrm{n}\mathrm{S}\mathrm{b}$ have been determined by a new method, the direct curve fit of Shubnikov-de Haas theory to experimental magnetoconductivity oscillations. The fits were made with unsplit data, data with no well-defined double peaks. The values obtained show better agreement with electron-spin-resonance values than do values obtained by previous Shubnikov-de Haas methods. The fitting procedure allows the $g$ factors to be determined for high-concentration samples where electron-spin-resonance experiments fail.