Abstract
Nanodiamonds containing negatively charged triplet (having an electron spin S = 1) nitrogen-vacancy (NV-) centers are an extraordinary room-temperature quantum system, whose electron spins may be polarized and read out optically even in a single nanocrystal. In this Viewpoint we promote a simple but reliable method to identify, attribute, and quantify these triplet defects in a polycrystalline sample using electron paramagnetic resonance (EPR) spectroscopy. The characterization relies on a specific "forbidden"transition ("ΔMS = 2"), which appears at about half the central magnetic field and shows a remarkably small anisotropy. In particular, we emphasize that this method is by far not limited to NV- centers in diamond but could become an important characterization tool for novel triplet defects in various types of nanoparticles.
Original language | American English |
---|---|
Pages (from-to) | 7438-7442 |
Number of pages | 5 |
Journal | Journal of Physical Chemistry Letters |
Volume | 11 |
Issue number | 17 |
DOIs | |
State | Published - 3 Sep 2020 |
All Science Journal Classification (ASJC) codes
- General Materials Science
- Physical and Theoretical Chemistry