Magnetotransport in low-density $p$-Si/SiGe heterostructures: From metal through hopping insulator to Wigner glass

Details Magnetotransport in low-density $p$-Si/SiGe heterostructures: From metal through hopping insulator to Wigner glass Magnetotransport in low-density $p$-Si/SiGe heterostructures: From metal through hopping insulator to Wigner glass

2007-12-05

arxiv.org/abs/0712.0716v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

11 pages, 14 figures

Scientific paper

10.1103/PhysRevB.77.085327

We study DC and AC transport in low-density $p-$Si/SiGe heterostructures at low temperatures and in a broad domain of magnetic fields up to 18 T. Complex AC conductance is determined from simultaneous measurement of velocity and attenuation of a surface acoustic wave propagating in close vicinity of the 2D hole layer. The observed behaviors of DC and AC conductance are interpreted as an evolution from metallic conductance at B=0 through hopping between localized states in intermediate magnetic fields (close to the plateau of the integer quantum Hall effect corresponding to the Landau-level filling factor $\nu$=1) to formation of the Wigner glass in the extreme quantum limit ($B\gtrsim 14$, $T \lesssim 0.8$ K).

Affiliated with

Also associated with

No associations

Rating

Magnetotransport in low-density $p$-Si/SiGe heterostructures: From metal through hopping insulator to Wigner glass 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 Magnetotransport in low-density $p$-Si/SiGe heterostructures: From metal through hopping insulator to Wigner glass, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetotransport in low-density $p$-Si/SiGe heterostructures: From metal through hopping insulator to Wigner glass will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-310807