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

A. McCollam | Zendy; S. Wenderich | Zendy; Michelle Kruize | Zendy; V. K. Guduru | Zendy; H. J. A. Molegraaf | Zendy; Mark Huijben | Zendy; Gertjan Koster | Zendy; David H.A. Blank | Zendy; Guus Rijnders | Zendy; Alexander Brinkman | Zendy; H. Hilgenkamp | Zendy; U. Zeitler | Zendy; J. C. Maan | Zendy

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

Author(s) -

A. McCollam,

S. Wenderich,

Michelle Kruize,

V. K. Guduru,

H. J. A. Molegraaf,

Mark Huijben,

Gertjan Koster,

David H.A. Blank,

Guus Rijnders,

Alexander Brinkman,

H. Hilgenkamp,

U. Zeitler,

J. C. Maan

Publication year - 2014

Publication title -

apl materials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.571

H-Index - 60

ISSN - 2166-532X

DOI - 10.1063/1.4863786

Subject(s) - fermi gas , condensed matter physics , heterojunction , shubnikov–de haas effect , materials science , electron , scattering , quantum well , conduction band , magnetic field , quantum oscillations , electron mobility , fermi energy , physics , optics , laser , quantum mechanics

We have performed high field magnetotransport measurements to investigate the interface electron gas in a high mobility SrTiO3/SrCuO2/LaAlO3/SrTiO3 heterostructure. Shubnikov-de Haas oscillations reveal several 2D conduction subbands with carrier effective masses of 0.9me and 2me, quantum mobilities of order 2000 cm2/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

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