Absence of Floating Delocalized States in a Two-Dimensional Hole Gas

Details Absence of Floating Delocalized States in a Two-Dimensional Hole Gas Absence of Floating Delocalized States in a Two-Dimensional Hole Gas

1998-08-13

arxiv.org/abs/cond-mat/9808145v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

10 pages, 4 Postscript figures, To be published in Physical Review B (Rapid Communications) 58, Sept. 15, 1998

Scientific paper

10.1103/PhysRevB.58.R7532

By tracking the delocalized states of the two-dimensional hole gas in a p-type GaAs/AlGaAs heterostructure as a function of magnetic field, we mapped out a phase diagram in the density-magnetic-field plane. We found that the energy of the delocalized state from the lowest Landau level flattens out as the magnetic field tends toward zero. This finding is different from that for the two-dimensional electron system in an n-type GaAs/AlGaAs heterostructure where delocalized states diverge in energy as B goes to zero indicating the presence of only localized states below the Fermi energy. The possible connection of this finding to the recently observed metal-insulator transition at B = 0 in the two-dimensional hole gas systems is discussed.

Affiliated with

Also associated with

No associations

Rating

Absence of Floating Delocalized States in a Two-Dimensional Hole 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 Absence of Floating Delocalized States in a Two-Dimensional Hole Gas, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Absence of Floating Delocalized States in a Two-Dimensional Hole Gas will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-384270