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Electronic subbands in the a−LaAlO3/KTaO3 interface revealed by quantum oscillations in high magnetic fields
2021
Physical Review Research
Investigating Shubnikov-de Haas (SdH) oscillations in high magnetic fields, we experimentally infer the electronic band structure of the quasi-two-dimensional electron gas (2DEG) at the ionic-liquid gated amorphous (a)-LaAlO 3 /KTaO 3 interface. The angular dependence of SdH oscillations indicates a 2D confinement of a majority of electrons at the interface. However, additional SdH oscillations with an angle-independent frequency observed at high tilt angles indicate the coexistence of 3D
doi:10.1103/physrevresearch.3.033234
fatcat:bvm6245zszerhdsuvqm5r72iuy