Condensed Matter Seminar, Dr. Sungkun Hong, "Nanoscale Magnetic Imaging Using Single Electronic Spins in Diamond"
It has been a long standing goal to detect individual spins with nanoscale spatial resolution. Nitrogen-vacancy (NV) centers have recently been considered as an promising candidate for such sensing, as their spins have long coherence times even at room temperature and are localized on atomic lengthscales.
In this talk I will present our recent progress in realizing a nanoscale magnetometer with a single NV center. In detail, I will start by describing our scanning probe magnetometer, which consists of a monolithic diamond AFM tip containing a single NV center at its end. This device ensures both high magnetic field sensitivity and nanoscale spatial resolution, originated from the high quality of the materials and close proximity of NV centers to the surface. Using our device, we imaged the magnetic dipole field of a single electron spin at room temperature. After presenting the detailed results, I will conclude by discussing current efforts and plans to improve and generalize the scheme.
Location: Jadwin A07
Date/Time: 05/21/12 at 1:00 pm - 05/21/12 at 3:00 pm
Category: Condensed Matter Seminar