Shubnikov—de Haas Effect in SrTiO3

The magnetoresistance of semiconducting SrTi${\mathrm{O}}_3$ has been investigated in high magnetic fields (up to 150 kOe). In the temperature range 1.4-2.1 °K, for fields of more than 50 kOe, well-developed Shubnikov-de Haas-type oscillations have been observed. The data support a conduction band consisting of spheroids along the $〈100〉$ crystalline axes, having 3 minima at the points $X_3$. The periods of oscillation as well as the temperature dependence of the amplitude and the magnetic fields saturation lead to the following values for the transverse and longitudinal effective masses: $m_t=1.5\mathrm{}{m}_0\pm 15\%$; $m_l=6.0\mathrm{}{m}_0\pm 30\%$.