Figure 1 | Scientific Reports

Figure 1

From: Spin-polarized Wide Electron Slabs in Functionally Graded Polar Oxide Heterostructures

Figure 1

(a) Polarization field directions, (b) schematic distribution of polarization dipole and (c) distribution of resultant carriers in the linearly graded ZnMgO/ZnO heterostructure in the [0001] orientation.

PSP and PPB represent the spontaneous and piezoelectric polarizations, respectively. The parameter c is the lattice constant, σπ is the polarization-induced charges on top of the surface and NDπ is the sheet density of positive unbalanced polarization charges.

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