Metal-Insulator oscillations in a Two-dimensional Electron-Hole system

R. J. Nicholas; K. Takashina; M. Lakrimi; B. Kardynal; S. Khym; N. J. Mason; D. M. Symons; D. K. Maude; J. C. Portal

doi:10.1103/PhysRevLett.85.2364

Metal-Insulator oscillations in a Two-dimensional Electron-Hole system

Mesoscale and Nanoscale Physics 2009-10-31 v3

Authors: R. J. Nicholas , K. Takashina , M. Lakrimi , B. Kardynal , S. Khym , N. J. Mason , D. M. Symons , D. K. Maude , J. C. Portal

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

The electrical transport properties of a bipolar InAs/GaSb system have been studied in magnetic field. The resistivity oscillates between insulating and metallic behaviour while the quantum Hall effect shows a digital character oscillating from 0 to 1 conducatance quantum e^2/h. The insulating behaviour is attributed to the formation of a total energy gap in the system. A novel looped edge state picture is proposed associated with the appearance of a voltage between Hall probes which is symmetric on magnetic field reversal.

Keywords

metal-insulator transition two-dimensional electron gas magnetoresistance

Cite

@article{arxiv.cond-mat/9912122,
  title  = {Metal-Insulator oscillations in a Two-dimensional Electron-Hole system},
  author = {R. J. Nicholas and K. Takashina and M. Lakrimi and B. Kardynal and S. Khym and N. J. Mason and D. M. Symons and D. K. Maude and J. C. Portal},
  journal= {arXiv preprint arXiv:cond-mat/9912122},
  year   = {2009}
}

Comments

4 pages, 5 Postscript figures: revised version

Metal-Insulator oscillations in a Two-dimensional Electron-Hole system

Abstract

Keywords

Cite

Comments

Related papers