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Current-Driven Spin Dynamics of Artificially Constructed Quantum Magnets
Atomic Spin-Transfer Torque Efficient electrical control of magnetism is a major goal of spin-based electronics. In many setups, spin-polarized current is used to switch the magnetization of aExpand
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Itinerant nature of atom-magnetization excitation by tunneling electrons.
We have performed single-atom magnetization curve (SAMC) measurements and inelastic scanning tunneling spectroscopy (ISTS) on individual Fe atoms on a Cu(111) surface. The SAMCs show a broadExpand
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Atom-by-atom engineering and magnetometry of tailored nanomagnets
Small clusters of magnetic atoms can behave in very different ways to those same atoms in bulk. Arranging iron atoms one by one into complex but well-defined patterns on a copper surface enables theExpand
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Perpendicular reading of single confined magnetic skyrmions
Thin-film sub-5 nm magnetic skyrmions constitute an ultimate scaling alternative for future digital data storage. Skyrmions are robust noncollinear spin textures that can be moved and manipulated byExpand
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Seeing the Fermi Surface in Real Space by Nanoscale Electron Focusing
The Fermi surface that characterizes the electronic band structure of crystalline solids can be difficult to image experimentally in a way that reveals local variations. We show that Fermi surfacesExpand
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Spin excitations of individual Fe atoms on Pt(111): impact of the site-dependent giant substrate polarization.
We demonstrate using inelastic scanning tunneling spectroscopy and simulations based on density functional theory that the amplitude and sign of the magnetic anisotropy energy for a single Fe atomExpand
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Absence of a spin-signature from a single Ho adatom as probed by spin-sensitive tunneling
Whether rare-earth materials can be used as single-atom magnetic memory is an ongoing debate in recent literature. Here we show, by inelastic and spin-resolved scanning tunnelling-based methods, thatExpand
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Spin-orbit coupling and spin waves in ultrathin ferromagnets: The spin-wave Rashba effect
We present theoretical studies of the influence of spin-orbit coupling on the spin-wave excitations of the Fe monolayer and bilayer on the W110 surface. The Dzyaloshinskii-Moriya interaction isExpand
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Theory of local dynamical magnetic susceptibilities from the Korringa-Kohn-Rostoker Green function method
Within the framework of time-dependent density functional theory combined with the Korringa-Kohn-Rostoker Green function formalism, we present a real space methodology to investigate dynamicalExpand
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Anomalously large g factor of single atoms adsorbed on a metal substrate
We have performed inelastic scanning tunneling spectroscopy (ISTS) on individual Fe atoms adsorbed on a Ag(111) surface. ISTS reveals a magnetization excitation with a lifetime of about 400 fsecExpand
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