Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2010-04-07
Phys.Rev. B, 81, 165302 (2010)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
5 pages, 4 figures
Scientific paper
We study a $Al_{x}Ga_{x-1}As$ parabolic quantum wells (PQW) with $GaAs/Al_{x}Ga_{x-1}As$ square superlattice. The magnetotransport in PQW with intentionally disordered short-period superlattice reveals a surprising transition from electrons distribution over whole parabolic well to independent-layer states with unequal density. The transition occurs in the perpendicular magnetic field at Landau filling factor $\nu\approx3$ and is signaled by the appearance of the strong and developing fractional quantum Hall (FQH) states and by the enhanced slope of the Hall resistance. We attribute the transition to the possible electron localization in the x-y plane inside the lateral wells, and formation of the FQH states in the central well of the superlattice, driven by electron-electron interaction.
Bakarov A. K.
Gusev G. M.
Portal J.-C.
Pusep Yu. A.
Toropov Aleksandr I.
No associations
LandOfFree
Magnetic field induced transition in a wide parabolic well superimposed with superlattice 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 Magnetic field induced transition in a wide parabolic well superimposed with superlattice, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic field induced transition in a wide parabolic well superimposed with superlattice will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-397844