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Electric field effect in correlated oxide systems

Nature volume 424, pages 1015–1018 (2003)Cite this article

Abstract

Semiconducting field-effect transistors are the workhorses of the modern electronics era. Recently, application of the field-effect approach to compounds other than semiconductors has created opportunities to electrostatically modulate types of correlated electron behaviour—including high-temperature superconductivity and colossal magnetoresistance—and potentially tune the phase transitions in such systems. Here we provide an overview of the achievements in this field and discuss the opportunities brought by the field-effect approach.

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Figure 1: Illustration of the zero-temperature behaviour of various correlated materials as a function of sheet charge density (n2D).
Figure 2
Figure 3: Field effects in superconducting films.
Figure 4: Phase diagram of the high-Tc superconductors.

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Acknowledgements

We acknowledge discussions with, and support from, T. Giamarchi, A. Lin, A. Sawa, D. G. Schlom, C. W. Schneider and C. C. Tsuei. C.A. was supported by AFOSR, DOE, NSF and the Packard Foundation; J.M. was supported by BMBF, ESF (Thiox) and SFB; J.M.T. was supported by the Swiss National Science Foundation through the National Centre of Competence in Research, ‘Materials with Novel Electronic Properties’ and division II, NEDO, and ESF (Thiox).

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Authors and Affiliations

  1. Department of Applied Physics, Yale University, PO Box 208284, New Haven, Connecticut, 06520-8284, USA

    C. H. Ahn

  2. Condensed Matter Physics Department, University of Geneva, 24 quai Ernest Ansermet, CH-1211 4, Geneva, Switzerland

    J.-M. Triscone

  3. Center for Electronic Correlations and Magnetism, Institute of Physics, University of Augsburg, D-86135, Augsburg, Germany

    J. Mannhart

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  1. C. H. Ahn
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Correspondence to C. H. Ahn, J.-M. Triscone or J. Mannhart.

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Ahn, C., Triscone, JM. & Mannhart, J. Electric field effect in correlated oxide systems. Nature 424, 1015–1018 (2003). https://doi.org/10.1038/nature01878

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