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Paper detail

Quantum oscillations and subband properties of the two-dimensional electron gas at the LaAlO3/SrTiO3 interface

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.

preprint2012arXivOpen access
A. McCollamS. WenderichM. K. KruizeV. K. GuduruH. J. A. MolegraafM. HuijbenG. KosterD. H. A. BlankG. RijndersA. BrinkmanH. HilgenkampU. ZeitlerJ. C. Maan
cond-mat.str-elcond-mat.mtrl-sci
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A. McCollamS. WenderichM. K. KruizeV. K. GuduruH. J. A. MolegraafM. HuijbenG. KosterD. H. A. BlankG. RijndersA. BrinkmanH. HilgenkampU. ZeitlerJ. C. Maan

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