Nanoscale magnetic imaging of a single electron spin under ambient conditions
By M. Grinolds, Sungkun Hong, Patrick Maletinsky, L. Luan, Mikhail D. Lukin, R. Walsworth, A. Yacoby. Nature Physics, 2012
392 citations recorded by the source corpus.
A magnetometer focused on nitrogen-vacancy centres in diamond can image the magnetic dipole field of a single target electron spin at room temperature and ambient pressure. The detection of ensembles of spins under ambient conditions has revolutionized the biological, chemical and physical sciences through magnetic resonance imaging1 and nuclear magnetic resonance2,3. Pushing sensing capabilities to the individual-spin level would enable unprecedented applications such as single-molecule structural imaging; however, the weak magnetic fields from single spins are undetectable by conventional far-field resonance techniques4. In recent years, there has been a considerable effort to develop nanoscale scanning magnetometers5,6,7,8, which are able to measure fewer spins by bringing the sensor in close proximity to its target. The most sensitive of these magnetometers generally require low temperatures for operation, but the ability to measure under ambient conditions (standard temperature and pressure) is critical for many imaging applications, particularly in biological systems. Here we demonstrate detection and nanoscale imaging of the magnetic field from an initialized single electron spin under ambient conditions using a scanning nitrogen-vacancy magnetometer. Real-space, quantitative magnetic-field images are obtained by deterministically scanning our nitrogen-vacancy magnetometer 50 nm above a target electron spin, while measuring the local magnetic field using dynamically decoupled magnetometry protocols. We discuss how this single-spin detection enables the study of a variety of room-temperature phenomena in condensed-matter physics with an unprecedented combination of spatial resolution and spin sensitivity.
Subfields: Geophysics, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/880ee1731ceca2490420ee41c630010a1b5bc7ef
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Citations in the corpus
- Quantum metrology and its application in biology (2014, background): “The exquisite sensitivity possible is clearly illustrated by the demonstration of nanoscale magnetic imaging of a single electron spin at room temperature [220].”
- Optical magnetic imaging of living cells (2013, neutral): “…of NV-diamond magnetometry include high-precision sensing and sub-micron imaging of externally applied and controlled magnetic fields 6, 9–11 ; detection of electron 12 and nuclear 13–15 spins; and imaging of a single electron spin within a neighbouring diamond crystal with ~10 nm resolution 16 .”
- Nano Superconducting Quantum Interference device: a powerful tool for nanoscale investigations (2015, methodology): “, quantum tunnelling of magnetization [107] and for drug delivery applications or immunoassay techniques [245]. Among the several techniques tools employed to investigate the 97 magnetic nano-objects [14, 15, 16, 17, 18, 19, 20, 21], those based on nanoSQUIDs allow the most detailed and precise stud”