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- W4282915221 abstract "Freestanding oxide membranes constitute an intriguing material platform for new functionalities and allow integration of oxide electronics with technologically important platforms such as silicon. Sambri et al. recently reported a method to fabricate freestanding LaAlO3/SrTiO3 (LAO/STO) membranes by spalling of strained heterostructures. Here, we first develop a scheme for the high-yield fabrication of membrane devices on silicon. Second, we show that the membranes exhibit metallic conductivity and a superconducting phase below ∼200 mK. Using anisotropic magnetotransport we extract the superconducting phase coherence length ξ ≈ 36-80 nm and establish an upper bound on the thickness of the superconducting electron gas d ≈ 17-33 nm, thus confirming its two-dimensional character. Finally, we show that the critical current can be modulated using a silicon-based backgate. The ability to form superconducting nanostructures of LAO/STO membranes, with electronic properties similar to those of the bulk counterpart, opens opportunities for integrating oxide nanoelectronics with silicon-based architectures." @default.
- W4282915221 created "2022-06-16" @default.
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- W4282915221 date "2022-06-09" @default.
- W4282915221 modified "2023-10-15" @default.
- W4282915221 title "A Two-Dimensional Superconducting Electron Gas in Freestanding LaAlO<sub>3</sub>/SrTiO<sub>3</sub> Micromembranes" @default.
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- W4282915221 doi "https://doi.org/10.1021/acs.nanolett.2c00992" @default.
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