Linear temperature dependence of conductivity in Si two-dimensional electrons near the apparent metal-to-insulator transition

Details Linear temperature dependence of conductivity in Si two-dimensional electrons near the apparent metal-to-insulator transition Linear temperature dependence of conductivity in Si two-dimensional electrons near the apparent metal-to-insulator transition

2006-09-12

arxiv.org/abs/cond-mat/0609301v1

Phys. Rev. B 75, 033314 (2007)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 Revtex pages, 3 figures

Scientific paper

10.1103/PhysRevB.75.033314

In a high mobility two-dimensional electron system in Si, near the critical density, $n_c=0.32\times10^{11}$cm$^{-2}$, of the apparent metal-to-insulator transition, the conductivity displays a linear temperature ($T$) dependence around the Fermi temperature. When $\sigma_0$, the extrapolated T=0 conductivity from the linear T-dependence, is plotted as a function of density, two regimes with different $\sigma_0(n)$ relations are seen, suggestive of two different phases. Interestingly, a sharp transition between these two regimes coincides with $n_c$, and $\sigma_0$ of the transition is $\sim$ $e^2/h$, the quantum conductance, per square. Toward T=0, the data deviate from linear $\sigma(T)$ relation and we discuss the possible percolation type of transition in our Si sample.

Affiliated with

Also associated with

No associations

Rating

Linear temperature dependence of conductivity in Si two-dimensional electrons near the apparent metal-to-insulator transition 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 Linear temperature dependence of conductivity in Si two-dimensional electrons near the apparent metal-to-insulator transition, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Linear temperature dependence of conductivity in Si two-dimensional electrons near the apparent metal-to-insulator transition will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-554222