Journal article
Magnetic two-dimensional electron gas at the manganite-buffered LaAlO3/SrTiO3 interface
Fabrication of highly mobile spin-polarized two-dimensional electron gas (2DEG) is crucially important for both fundamental and applied research. Usually, spin polarization appears below 10 K for the 2DEG of LaAlO3/SrTiO3 interface, stemming from the magnetic ordering of Ti3+ ions with the mediation of itinerant electrons.
Herein, we report a magnetic 2DEG at a La7/8Sr1/8MnO3-buffered LaAlO3/SrTiO3 interface, which simultaneously shows electrically tunable anomalous Hall effect and high conductivity. The spin-polarized temperature for the 2DEG is promoted to 30 K while the mobility remains high. The magnetism likely results from a gradient manganese interdiffusion into SrTiO3.
The present work demonstrates the great potential of manganite-buffered LaAlO3/SrTiO3 interfaces for spintronic applications.
Language: | English |
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Publisher: | American Physical Society (APS) |
Year: | 2017 |
ISSN: | 1550235x , 10980121 , 24699950 and 24699969 |
Types: | Journal article |
DOI: | 10.1103/PhysRevB.96.195167 |
ORCIDs: | Chen, Yunzhong and Pryds, Nini |