Determination of the Electron Masses in Stannic Oxide by Submillimeter Cyclotron Resonance

This is the authors' abstract. We don't add key points for this paper.

Submillimeter measurements of the effective masses yield values of m_⊥*=0.299m₀ and m_∥*=0.234m₀ for the electron. The density-of-states effective mass is 0.275m₀. These direct measurements resolve the long-standing conflict among variety of reports which have ranged from 0.1 to 0.4m₀.