Physics

A quantum sensor for atomic-scale electric and magnetic fields

T. Esat, D. Borodin, et al.

Discover groundbreaking research that unveils a single-molecule quantum sensor capable of detecting faint magnetic fields at the atomic scale. This innovative work, led by Taner Esat and colleagues, demonstrates remarkable energy resolution and opens new avenues in atomic-scale quantum sensing.

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Index

Abstract

Detecting faint magnetic fields from single-electron and nuclear spins at the atomic scale is challenging. This paper presents a single-molecule quantum sensor fabricated at the apex of a scanning tunneling microscope (STM) tip by attaching Fe atoms and a PTCDA molecule. Using electron spin resonance (ESR), the sensor achieves ~100 neV energy resolution and measures magnetic and electric dipole fields from a single Fe atom and an Ag dimer with sub-angstrom spatial resolution. The method enables atomic-scale quantum sensing experiments on conducting surfaces and has potential applications in various fields.

Publisher

Nature Nanotechnology

Published On

Jul 25, 2024

Authors

Taner Esat, Dmitriy Borodin, Jeongmin Oh, Andreas J. Heinrich, F. Stefan Tautz, Yujeong Bae, Ruslan Temirov

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