ARPES and DFT on a Bi-rich Bi(1-x)Sb(x) monolayer on Ag(111) demonstrate that isovalent Sb substitution induces in-plane and out-of-plane potential asymmetries, yielding significant spin splitting and polarization despite substrate interaction.
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Spin polarization enhancement in a single-layer Bi(1-x)Sb(x) alloy on Ag(111) via isovalent substitution
ARPES and DFT on a Bi-rich Bi(1-x)Sb(x) monolayer on Ag(111) demonstrate that isovalent Sb substitution induces in-plane and out-of-plane potential asymmetries, yielding significant spin splitting and polarization despite substrate interaction.