Controlling the magnetism of oxygen surface vacancies in strontium titanate $(\mathrm{SrTi}{\mathrm{O}}_3)$ through charging

Abstract

We discuss, based on first principles calculations, the possibility to tune the magnetism of oxygen vacancies at the (001) surface of strontium titanate $(\mathrm{SrTi}{\mathrm{O}}_3)$. The magnetic moment of single and clustered vacancies stemming from Ti-O broken bonds can be both quenched and stabilized controllably by chemical potential adjustment associated with doping the system with electrons or holes. We discuss to what extent this route to magnetization state control is robust against other external influences like chemical doping, mechanical action and electric field. Such control of vacancy state and magnetization can conceivably be achieved experimentally by using local probe tips.

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Cited by in corpus (4)

• Mechanical dissipation from charge and spin transitions in oxygen deficient SrTiO_3
• Oxygen Vacancy-Induced Topological Hall effect in a Nonmagnetic Band Insulator
• First-principles based Monte Carlo modeling of oxygen deficient Fe-substituted SrTiO${}_3$ experimental magnetization
• Origin of Oxygen Partial Pressure-Dependent Conductivity in SrTiO3