Atomic-scale spin-polarization maps using functionalized superconducting probes
arXiv:2006.05770 · doi:10.1126/sciadv.abd7302
Abstract
A scanning tunneling microscope (STM) with a magnetic tip that has a sufficiently strong spin-polarization can be used to map the sample's spin structure down to the atomic scale but usually lacks the possibility to absolutely determine the value of the sample's spin-polarization. Magnetic impurities in superconducting materials give rise to pairs of perfectly, i.e. 100% spin-polarized sub-gap resonances. In this work, we functionalize the apex of a superconducting Nb STM-tip with such impurity states by attaching Fe atoms to probe the spin-polarization of atom-manipulated Mn nanomagnets on a Nb(110) surface. By comparison with spin-polarized STM measurements of the same nanomagnets using Cr bulk tips we demonstrate an extraordinary spin-sensitivity and the possibility to measure the sample's spin-polarization values quantitatively with our new functionalized probes.
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Cited by in corpus (37)
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- Quantum spins and hybridization in artificially-constructed chains of magnetic adatoms on a superconductor
- Two-dimensional Shiba lattices as possible platform for crystalline topological superconductivity
- Long range and highly tunable interaction between local spins coupled to a superconducting condensate
- Atomic Manipulation of In-gap States on the -BiPd Superconductor
- Density functional Bogoliubov-de Gennes analysis of superconducting Nb and Nb(110) surfaces
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- Testing the topological nature of end states in antiferromagnetic atomic chains on superconductors
- Relativistic first principles theory of Yu--Shiba--Rusinov states applied to an Mn adatom and Mn dimers on Nb(110)
- Zeeman effects on Yu-Shiba-Rusinov states
- Majorana quasiparticles in atomic spin chains on superconductors
- Anomalous excitations of atomically crafted quantum magnets
- Universal topological quantum computation with strongly correlated Majorana edge modes
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- Quasiparticle focusing of bound states in two-dimensional -wave superconductors
- Quantum Sensing of Antiferromagnetic Magnon Two-Mode Squeezed Vacuum
- Tracking a Spin-Polarized Superconducting Bound State across a Quantum Phase Transition
- Boosting the STM's spatial and energy resolution with double-functionalized probe tips
- Systematic study of Mn atoms, artificial dimers and chains on superconducting Ta(110)
- Complex magnetic ground states and topological electronic phases of atomic spin chains on superconductors
- Increased localization of Majorana modes in antiferromagnetic chains on superconductors
- Searching for Majorana quasiparticles at vortex cores in iron-based superconductors
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- Scanning tunneling microscopy using CO-terminated probes with tilted and straight geometries
- Tunneling spectra of impurity states in unconventional superconductors
- Robust Spin Polarization of Yu-Shiba-Rusinov States in Superconductor/Ferromagnetic Insulator Heterostructures
- Gate-tunable topological superconductivity in a supramolecular electron spin lattice
- Preparation and readout of Majorana qubits in magnet-superconductor hybrid systems
- Helical Topological Superconducting Pairing at Finite Excitation Energies
- Anisotropy of Yu-Shiba-Rusinov states in NbSe
- Detecting the topological winding of superconducting nodes via Local Density of States
- Spin-polarized scanning tunneling microscopy measurement scheme for determining the quantum geometric tensor
- Single-enantiomer spin polarisers in superconducting junctions
- Spin-dependent tunneling between individual superconducting bound states
- Electronic and Magnetic Properties of Building Blocks of Mn and Fe Atomic Chains on Nb(110)