Shubnikov-de Haas oscillations in SrTiO3\LaAlO3 interface

Details Shubnikov-de Haas oscillations in SrTiO3\LaAlO3 interface Shubnikov-de Haas oscillations in SrTiO3\LaAlO3 interface

2010-08-29

arxiv.org/abs/1008.4975v1

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

Quantum magnetic oscillations in SrTiO3/\LaAlO3 interface are observed. The evolution of their frequency and amplitude at various gate voltages and temperatures is studied. The data are consistent with the Shubnikov de-Haas theory. The Hall resistivity rho exhibits nonlinearity at low magnetic field. It is fitted assuming multiple carrier contributions. The comparison between the mobile carrier density inferred from the Hall data and the oscillation frequency suggests multiple valley and spin degeneracy. The small amplitude of the oscillations is discussed in the framework of the multiple band scenario.

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