Electron-Electron Interaction Effects in Quantum Hall Regime of GaN/AlGaN Heterostructures

• Authors: M. Siekacz , K. Dybko , D. Maude , M. Potemski , W. Knap , C. Skierbiszewski
• Languages of publication: EN

Abstracts

EN

We measured the activation of resistivity at quantum Hall minima in high mobility two-dimensional electron gas confined at AlGaN/GaN interface. The effective g-factor and effective mass was deduced. The electron-electron interactions modify both quantities compared to their bare band values. It is found that the influence of interactions is much more pronounced onto g-factor than effective mass. The relative spin susceptibility was also calculated and compared with available theories. The best agreement was found with the ideal two-dimensional gas model in random phase approximation.

Keywords

EN

71.30.+h; 73.40.-c; 73.43.Qt

Discipline

• 73.40.-c: Electronic transport in interface structures
• 71.30.+h: Metal-insulator transitions and other electronic transitions
• 73.43.Qt: Magnetoresistance(see also 75.47.-m Magnetotransport phenomena; materials for magnetotransport in magnetic properties and materials)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2007
• Volume: 112
• Issue: 2
• Pages: 269-273

Dates

published

2007-08

received

2007-06-09

Contributors

author

M. Siekacz

• High Pressure Research Center, Polish Academy of Sciences, Sokołowska 29/37, 01-142 Warsaw, Poland

author

K. Dybko

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland

author

D. Maude

• Grenoble High Magnetic Field Laboratory, MPI-CNRS, 38042 Grenoble, France

author

M. Potemski

• Grenoble High Magnetic Field Laboratory, MPI-CNRS, 38042 Grenoble, France

author

W. Knap

• GES-UMR, CNRS-Université Montpellier 2, Place E. Bataillon, 34950 Montpellier, France

author

C. Skierbiszewski

• High Pressure Research Center, Polish Academy of Sciences, Sokołowska 29/37, 01-142 Warsaw, Poland

References

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Identifiers

DOI

10.12693/APhysPolA.112.269