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- W3204540929 abstract "The quasi-two-dimensional electronic gas at the (111) SrTiO$_3$-based heterostructure interfaces is described by a multi-band tight-binding model providing electronic bands in agreement at low energies with photoemission experiments. We analyze both the roles of the spin-orbit coupling and of the trigonal crystal field effects. We point out the presence of a regime with sizable strain where the band structure exhibits a Dirac cone whose features are consistent with textit{ab-initio} approaches. The combined effect of spin-orbit coupling and trigonal strain gives rise to non-trivial spin and orbital angular momenta patterns in the Brillouin zone and to quantum spin Hall effect by opening a gap at the Dirac cone. The system can switch from a conducting to a topological insulating state textit{via} modification of trigonal strain within a parameter range which is estimated to be experimentally achievable." @default.
- W3204540929 created "2021-10-11" @default.
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- W3204540929 date "2021-09-23" @default.
- W3204540929 modified "2023-09-27" @default.
- W3204540929 title "Strain-induced topological phase transition at (111) SrTiO$_3$-based heterostructures" @default.
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