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Superconductivity pp 325–352Cite as

Superconductivity in the Two-Dimensional Electron Gas at Transition Metal Oxide Interfaces

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Abstract

The transition metal oxide interface has attracted extensive attention due to its unique, strong correlation properties. In particular, LaAlO3/SrTiO3(LAO/STO) interface has a high mobility of two-dimensional electron gas (2DEG) and specific physical phenomena such as superconductivity, ferromagnetism, and the coexistence of superconductivity and ferromagnetism are observed. Other transition metal oxide interface systems also show high mobility and similar novel quantum phenomena. Superconducting 2DEG at the LAO/STO interface offers an appealing platform for quantum phase transition from a superconductor to a weakly localized metal. Although the research on the transition metal oxide interface is extensive, there are still many outstanding unsolved issues, such as the origin of 2DEG, the superconducting pairing mechanism of 2DEG, the origin of ferromagnetism, and the coexistence of superconductivity and ferromagnetism. Considering these aspects, the 2DEG of the transition metal oxide interface is of high interest for basic research and potential applications. This chapter presents a brief state-of-the-art view of the research results on superconductivity in 2DEG based on literature and our findings.

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Acknowledgments

This work is supported by the National Natural Science Foundation of China (Grants No. 11674031 and No. 11474022) and the National Basic Research Program of China (Grants No. 2014CB920903 and No. 2013CB921701) for the financial support.

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    J. C. Nie

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    Paolo Mele

  2. Osaka Prefecture University, Sakai, Osaka, Japan

    Kosmas Prassides

  3. Applied Superconductivity Center, National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL, USA

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  4. Campus UAB, Institute of Material Science of Barcelona, ICMAB-CSIC, Bellaterra, Spain

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    Tamio Endo

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Nie, J.C. (2020). Superconductivity in the Two-Dimensional Electron Gas at Transition Metal Oxide Interfaces. In: Mele, P., et al. Superconductivity. Springer, Cham. https://doi.org/10.1007/978-3-030-23303-7_12

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