Engineered spin-orbit interactions in LaAlO3/SrTiO3-based 1D serpentine electron waveguidesopen access
- Authors
- Briggeman, Megan; Li, Jianan; Huang, Mengchen; Lee, Hyungwoo; Lee, Jung-Woo; Eom, Kitae; Eom, Chang-Beom; Irvin, Patrick; Levy, Jeremy
- Issue Date
- Nov-2020
- Publisher
- AMER ASSOC ADVANCEMENT SCIENCE
- Citation
- SCIENCE ADVANCES, v.6, no.48
- Journal Title
- SCIENCE ADVANCES
- Volume
- 6
- Number
- 48
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/89540
- DOI
- 10.1126/sciadv.aba6337
- ISSN
- 2375-2548
2375-2548
- Abstract
- The quest to understand, design, and synthesize new forms of quantum matter guides much of contemporary research in condensed matter physics. One-dimensional (1D) electronic systems form the basis for some of the most interesting and exotic phases of quantum matter. Here, we describe a family of quasi-1D nanostructures, based on LaAlO3/SrTiO3 electron waveguides, in which a sinusoidal transverse spatial modulation is imposed. These devices display unique dispersive features in the subband spectra, namely, a sizeable shift (similar to 7 T) in the spin-dependent subband minima, and fractional conductance plateaus. The first property can be understood as an engineered spin-orbit interaction associated with the periodic acceleration of electrons as they undulate through the nanowire (ballistically), while the second property signifies the presence of enhanced electron-electron scattering in this system. The ability to engineer these interactions in quantum wires contributes to the tool set of a 1D solid-state quantum simulation platform.
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