Atomically resolved spin-dependent tunneling on the oxygen-terminated Fe3O4(111)
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Citation:Berdunov, N.; Murphy, S.; Mariotto, G.; Shvets, I. V., Atomically resolved spin-dependent tunneling on the oxygen-terminated Fe3O4(111), Physical Review Letters, 93, 5, 2004, 057201
We employ spin-polarized STM to study the spin-dependent tunneling between a magnetite (111) sample and an antiferromagnetic tip through a vacuum barrier at room temperature. Atomic scale STM images show significant magnetic contrast corresponding to variations in the local surface states induced by oxygen vacancies. The estimated variations in tunneling magnetoresistance of 250% suggest that the spin-transport properties are significantly altered locally by the presence of surface defects.
Science Foundation Ireland
Publisher:American Physical Society
Series/Report no:Physical Review Letters;