Hidden lattice instabilities as origin of the conductive interface between insulating LaAlO3 and SrTiO3

P. W. Lee; V. N. Singh; G. Y. Guo; H.-J. Liu; J.-C. Lin; Y.-H. Chu; C. H. Chen; M.-W. Chu

doi:10.1038/ncomms12773

Nature Communications (Sep 2016)

Hidden lattice instabilities as origin of the conductive interface between insulating LaAlO3 and SrTiO3

P. W. Lee,
V. N. Singh,
G. Y. Guo,
H.-J. Liu,
J.-C. Lin,
Y.-H. Chu,
C. H. Chen,
M.-W. Chu

Affiliations

P. W. Lee: Department of Physics, National Taiwan University
V. N. Singh: Department of Physics, National Taiwan University
G. Y. Guo: Department of Physics, National Taiwan University
H.-J. Liu: Department of Materials Science and Engineering, National Chiao Tung University
J.-C. Lin: Institute of Physics, Academia Sinica
Y.-H. Chu: Department of Materials Science and Engineering, National Chiao Tung University
C. H. Chen: Center for Condensed Matter Sciences, National Taiwan University
M.-W. Chu: Center for Condensed Matter Sciences, National Taiwan University

DOI: https://doi.org/10.1038/ncomms12773
Journal volume & issue: Vol. 7, no. 1
pp. 1 – 8

Abstract

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The origin of interfacial conductivity between two insulating oxides, LaAlO3 and SrTiO3, remains elusive despite a long time research. Here, Lee et al. report atomic-scale observation of electron-gas formation for screening hidden ferroelectric-like lattice instabilities, discounting the role of polar catastrophe and cation intermixing.

Published in Nature Communications

ISSN: 2041-1723 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Science
Website: https://www.nature.com/ncomms/

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