Growing thin SrTiO3 films on Nb-doped SrTiO3 substrates tunes the surface 2DEG band filling, and for 0.5% Nb doping the Fermi level sits in the Zeeman gap, leaving a single spin-polarized Fermi surface.
Ba x Sr1°x TiO3 Thin Films 6.2 Bax Sr1°x TiO3 Thin Films 6.2.1 Film preparation The samples discussed in this sections are all PLD grown films
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Single spin-polarised Fermi surface in SrTiO$_3$ thin films
Growing thin SrTiO3 films on Nb-doped SrTiO3 substrates tunes the surface 2DEG band filling, and for 0.5% Nb doping the Fermi level sits in the Zeeman gap, leaving a single spin-polarized Fermi surface.