%0 Journal Article
%A Esat, Taner
%A Oh, Jeongmin
%A Borodin, Dmitriy
%A Heinrich, Andreas J.
%A Stefan Tautz, F.
%A Bae, Yujeong
%A Temirov, Ruslan
%T A quantum sensor for atomic-scale electric and magnetic fields
%J Nature nanotechnology
%V 19
%@ 1748-3387
%C London [u.a.]
%I Nature Publishing Group
%M FZJ-2024-05163
%P 1466–1471
%D 2024
%X The detection of faint magnetic fields from single-electron and nuclear spinsat the atomic scale is a long-standing challenge in physics. While currentmobile quantum sensors achieve single-electron spin sensitivity, atomicspatial resolution remains elusive for existing techniques. Here we fabricate asingle-molecule quantum sensor at the apex of the metallic tip of a scanningtunnelling microscope by attaching Fe atoms and a PTCDA (3,4,9,10-perylenetetracarboxylic-dianhydride) molecule to the tip apex. We address themolecular spin by electron spin resonance and achieve ~100 neV resolutionin energy. In a proof-of-principle experiment, we measure the magnetic andelectric dipole fields emanating from a single Fe atom and an Ag dimer on anAg(111) surface with sub-angstrom spatial resolution. Our method enablesatomic-scale quantum sensing experiments of electric and magnetic fields onconducting surfaces and may find applications in the sensing of spin-labelledbiomolecules and of spin textures in quantum materials.
%F PUB:(DE-HGF)16
%9 Journal Article
%$ 39054385
%U <Go to ISI:>//WOS:001277219200001
%R 10.1038/s41565-024-01724-z
%U https://juser.fz-juelich.de/record/1029551