Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2010-11-24
JETP, 2010, Vol. 111, No. 3, pp. 495-502
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
8 pages, 13 figures
Scientific paper
10.1134/S1063776110090189
Magnetoresistivity $\rho _{xx}$ and $\rho _{xy}$ and the acoustoelectronic effects are measured in $p$-Si/SiGe/Si with an impurity concentration $p$ = 2 $\times $ 10$^{11}$ cm$^{-2}$ in the temperature range 0.3-2.0 K and an tilted magnetic field up to 18 T. The dependence of the effective $g$-factor on the angle of magnetic field tilt $\theta $ to the normal to the plane of a two dimensional $p$-Si/SiGe/Si channel is determined. A first order ferromagnet-paramagnet phase transition is observed in the magnetic fields corresponding to a filling factor $\nu $ = 2 at $\theta \approx $ 59$^\textrm{o}$-60$^\textrm{o}$.
Drichko Irina L.
Leadley D. R.
Mironov O. A.
Smirnov Ivan Yu.
Suslov A. V.
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