Send to

Choose Destination
Phys Rev Lett. 2002 Nov 25;89(22):226805. Epub 2002 Nov 7.

Valley splitting of AlAs two-dimensional electrons in a perpendicular magnetic field.

Author information

Department of Electrical Engineering, Princeton University, New Jersey 08544, USA.


By measuring the angles at which the Landau levels overlap in tilted magnetic fields (the coincidence method), we determine the splitting of the conduction-band valleys in high-mobility two-dimensional electrons confined to AlAs quantum wells. The data reveal that, while the valleys are nearly degenerate in the absence of magnetic field, they split as a function of perpendicular magnetic field. The splitting appears to depend primarily on the magnitude of the perpendicular component of the magnetic field, suggesting electron-electron interaction as its origin.

Supplemental Content

Full text links

Icon for American Physical Society
Loading ...
Support Center