Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2012-04-05
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
5 pages, 6 figures
Scientific paper
The magnetoresistance components $\rho_{xx}$ and $\rho_{xy}$ were measured in two p-Si/SiGe/Si quantum wells that have an anisotropic g-factor in a tilted magnetic field as a function of temperature, field and tilt angle. Activation energy measurements demonstrate the existence of a ferromagnetic-paramagnetic (F-P) transition for a sample with a hole density of $p$=2$\times10^{11}$\,cm$^{-2}$. This transition is due to crossing of the 0$\uparrow$ and 1$\downarrow$ Landau levels. However, in another sample, with $p$=7.2$\times10^{10}$\,cm$^{-2}$, the 0$\uparrow$ and 1$\downarrow$ Landau levels coincide for angles $\Theta$=0-70$^{\text{o}}$. Only for $\Theta$ > 70$^{\text{o}}$ do the levels start to diverge which, in turn, results in the energy gap opening.
Drichko Irina L.
Leadley D. R.
Mironov O. A.
Smirnov Ivan Yu.
Suslov A. V.
No associations
LandOfFree
Magnetoresistivity in a Tilted Magnetic Field in p-Si/SiGe/Si Heterostructures with an Anisotropic g-Factor: Part II does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Magnetoresistivity in a Tilted Magnetic Field in p-Si/SiGe/Si Heterostructures with an Anisotropic g-Factor: Part II, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetoresistivity in a Tilted Magnetic Field in p-Si/SiGe/Si Heterostructures with an Anisotropic g-Factor: Part II will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-212350