2012•arXiv (Cornell University)Open access
Quantum oscillations and subband properties of the two-dimensional electron gas at the LaAlO3/SrTiO3 interface
A. McCollam, S. Wenderich, Michelle Kruize, Veerendra K. Guduru, H. J. A. Molegraaf, Mark Huijben, Gertjan Koster, D. H. A. Blank, Guus Rijnders, Alexander Brinkman, Hans Hilgenkamp, U. Zeitler, J. C. Maan
Open full text 1 citations
Abstract
We have performed high field magnetotransport measurements to investigate the interface electron gas in LaAlO3/SrTiO3 heterostructures. Shubnikov-de Haas oscillations reveal several 2D conduction subbands with carrier effective masses between 1 and 3 m_e, quantum mobilities of order 3000 cm^2/V s, and band edges only a few millielectronvolts below the Fermi energy. Measurements in tilted magnetic fields confirm the 2D character of the electron gas, and show evidence of inter-subband scattering.
Open-access reader