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- W1013957306 abstract "Heterostructures made of transition metal oxides are new tailor-made materials which are attracting much attention. We have constructed a 6-band $bm{k}cdotbm{p}$ Hamiltonian and used it within the envelope function method to calculate the subband structure of the LaAlO$_3$/SrTiO$_3$ interface, modeled by an electric field that we treat as a parameter. By use of density functional calculations, we determine the $bm{k}cdotbm{p}$ parameters describing the conduction band edge of SrTiO$_3$: the three effective mass parameters, $L=0.6104 text{eVAA}^2$, $M=9.73 text{eVAA}^2$, $N=-1.616 text{eVAA}^2$, the spin orbit splitting $Delta_{SO}=28.5 $meV and the low temperature tetragonal distortion energy splitting $Delta_T=2.1 $meV. We find strongly anisotropic non-parabolic subbands. Through quasiclassical quantization for a given density, this model allows a direct comparison to the frequency of the Shubnikov-de Haas quantum oscillations recently observed in high magnetic fields. Our results are in very good agreement with the experiments for an electric field strength $F = 0.1$ meV/AA{} and a charge density of $7.2 times 10^{12}$ cm$^{-2}$." @default.
- W1013957306 created "2016-06-24" @default.
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- W1013957306 date "2013-03-28" @default.
- W1013957306 modified "2023-09-27" @default.
- W1013957306 title "$bm{k}cdotbm{p}$ subband structure of the LaAlO$_3$/SrTiO$_3$ interface" @default.
- W1013957306 hasPublicationYear "2013" @default.
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