Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2006-02-03
Phys. Rev. B 75 (2007) 35313-1:7
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
improved figures, paragraph added, accepted for publ. in PRB
Scientific paper
10.1103/PhysRevB.75.035313
We have investigated the Hall resistance $R_H$ near the plateau-insulator transition of a two-dimensional electron gas in the quantum critical regime. High-field magnetotransport data taken on a low-mobility InGaAs/InP heterostructure with the plateau-insulator transition at a critical field $B_c$ of 17.2 T show that the Hall resistance $R_H$ is quantized at $h/e^2$ near the critical filling fraction ($\nu_c$ = 0.55) when $T \to 0$. By making use of universal scaling functions extracted from the magnetotransport data we show that $R_H$ in the insulating phase in the limit $T \to 0$ is quantized at $h/e^2$ for all values of the scaling parameter $\Delta\nu /(T/T_0)^\kappa$ with $\Delta\nu = \nu - \nu_c$. However, as a function of $\Delta\nu $ (or magnetic field) the Hall resistance diverges in the limit $T \to 0$ for all values $\nu < \nu_c$.
de Lang T. N. D.
Ponomarenko Leonid A.
Pruisken A. M. M.
Visser Anne de
No associations
LandOfFree
Observation of the quantized Hall insulator in the quantum critical regime of the two-dimensional electron gas 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 Observation of the quantized Hall insulator in the quantum critical regime of the two-dimensional electron gas, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Observation of the quantized Hall insulator in the quantum critical regime of the two-dimensional electron gas will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-699099