Tunable Rashba spin-orbit interaction at oxide interfaces.
By A. Caviglia, M. Gabay, S. Gariglio, N. Reyren, C. Cancellieri, J. Triscone. Physical Review Letters, 2009
723 citations recorded by the source corpus.
The quasi-two-dimensional electron gas found at the LaAlO{3}/SrTiO{3} interface offers exciting new functionalities, such as tunable superconductivity, and has been proposed as a new nanoelectronics fabrication platform. Here we lay out a new example of an electronic property arising from the interfacial breaking of inversion symmetry, namely, a large Rashba spin-orbit interaction, whose magnitude can be modulated by the application of an external electric field. By means of magnetotransport experiments we explore the evolution of the spin-orbit coupling across the phase diagram of the system. We uncover a steep rise in Rashba interaction occurring around the doping level where a quantum critical point separates the insulating and superconducting ground states of the system.
Subfields: Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/4e65beb244bed5296915de8e8a609749b431c7ea
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Citations in the corpus
- Direct observation of spin–orbit coupling in iron-based superconductors (2014, background): “In low-dimensional or noncentrosymmetric systems it can promote and stabilize superconductivity [6], allow ferromagnetism to coexist with superconductivity [7] or even rise Tc [8].”
- Nanoscale Phenomena in Oxide Heterostructures (2014, background): “Curiously, the onset of spin-orbit effects (82, 84) occurs sharply at a certain carrier density, and is correlated rather well with the emergence of superconductivity.”
- Ferroelectric Rashba semiconductors as a novel class of multifunctional materials (2013, neutral): “LaAlO3/SrTiO3 (Oxide interface) ? <5 1-5 10 Refs.[17,18,19]”
- Ultrathin oxide films and interfaces for electronics and spintronics (2011, background): “Tailoring and controlling (taking advantage of the sensitivity of these new phases to external stimuli) the physical properties at these interfaces between different oxide materials thus provides a new playground for researchers and offers a new nanoelectronics fabrication platform for future electr”