Abstract
films on single crystal substrates exhibit metallic behavior attributed to the film, the interface as well as part of the . In the limit of ultrathin films on , the contribution to the metallicity from strain-induced electronic structure modification of the film is minimized so that the dominant contribution to metallicity is from the interface and part of the due to charge transfer of electrons from to . In such a limit, we observe quantum oscillations whose angular dependence indicates a three-dimensional Fermi surface. Such angular dependence is observed in two sets of quantum oscillations—one low frequency and one high frequency—that we have attributed to an inner and outer Fermi surface associated with a Rashba-like spin split hybridized band.
- Received 26 October 2018
- Revised 4 February 2019
DOI:https://doi.org/10.1103/PhysRevB.99.115126
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