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

A. McCollam; S. Wenderich; M. K. Kruize; V. K. Guduru; H. J.A. Molegraaf; M. Huijben; G. Koster; D. H.A. Blank; G. Rijnders; A. Brinkman; H. Hilgenkamp; U. Zeitler; J. C. Maan

doi:10.1063/1.4863786

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

A. McCollam
, S. Wenderich
, M. K. Kruize
, V. K. Guduru
, H. J.A. Molegraaf
, M. Huijben
, G. Koster
, D. H.A. Blank
, G. Rijnders
, A. Brinkman
, H. Hilgenkamp
, U. Zeitler
, J. C. Maan

Radboud University Nijmegen
University of Twente

Research output: Contribution to journal › Article › peer-review

Abstract

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

Original language	English
Article number	022102
Journal	APL Materials
Volume	2
Issue number	2
DOIs	https://doi.org/10.1063/1.4863786
Publication status	Published - Feb 2014
Externally published	Yes

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McCollam, A., Wenderich, S., Kruize, M. K., Guduru, V. K., Molegraaf, H. J. A., Huijben, M., Koster, G., Blank, D. H. A., Rijnders, G., Brinkman, A., Hilgenkamp, H., Zeitler, U., & Maan, J. C. (2014). Quantum oscillations and subband properties of the two-dimensional electron gas at the LaAlO₃/SrTiO₃ interface. APL Materials, 2(2), Article 022102. https://doi.org/10.1063/1.4863786

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

abstract = "We have performed high field magnetotransport measurements to investigate the interface electron gas in a high mobility SrTiO3/SrCuO 2/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.",

author = "A. McCollam and S. Wenderich and Kruize, \{M. K.\} and Guduru, \{V. K.\} and Molegraaf, \{H. J.A.\} and M. Huijben and G. Koster and Blank, \{D. H.A.\} and G. Rijnders and A. Brinkman and H. Hilgenkamp and U. Zeitler and Maan, \{J. C.\}",

year = "2014",

month = feb,

doi = "10.1063/1.4863786",

language = "English",

volume = "2",

journal = "APL Materials",

issn = "2166-532X",

publisher = "American Institute of Physics",

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TY - JOUR

T1 - Quantum oscillations and subband properties of the two-dimensional electron gas at the LaAlO3/SrTiO3 interface

AU - McCollam, A.

AU - Wenderich, S.

AU - Kruize, M. K.

AU - Guduru, V. K.

AU - Molegraaf, H. J.A.

AU - Huijben, M.

AU - Koster, G.

AU - Blank, D. H.A.

AU - Rijnders, G.

AU - Brinkman, A.

AU - Hilgenkamp, H.

AU - Zeitler, U.

AU - Maan, J. C.

PY - 2014/2

Y1 - 2014/2

N2 - We have performed high field magnetotransport measurements to investigate the interface electron gas in a high mobility SrTiO3/SrCuO 2/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.

AB - We have performed high field magnetotransport measurements to investigate the interface electron gas in a high mobility SrTiO3/SrCuO 2/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.

UR - https://www.scopus.com/pages/publications/84900019065

U2 - 10.1063/1.4863786

DO - 10.1063/1.4863786

M3 - Article

AN - SCOPUS:84900019065

SN - 2166-532X

VL - 2

JO - APL Materials

JF - APL Materials

IS - 2

M1 - 022102

ER -

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

Abstract

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