Paleomagnetism Studies with Nitrogen-Vacancy Defect Centers in Diamond
Presented by Dr. Pauli Kehayias, postdoctoral researcher working with Dr. Ronald Walsworth, Harvard University
Nitrogen-vacancy (NV) color centers in diamond have generated much recent attention for magnetometry applications. NV centers work at ambient conditions and can be placed close to the diamond surface, allowing a small sample-sensor separation and high spatial resolution. I will discuss ongoing work on using ensembles of near-surface NVs for magnetic microscopy, where we image magnetic grains in rock samples for paleomagnetism studies. The micron-scale spatial resolution enables us to spatially distinguish between different ferromagnetic minerals and isolate high-coercivity magnetic inclusions from possible contamination. In addition to presenting continuing sensitivity and instrumentation improvements, I will describe ongoing paleomagnetism measurements, including constraining the magnetic field strength of the early Earth and assessing whether meteorite parent bodies had magnetic dynamo activity.
11:00 am, Thursday, March 23, 2017
Room 190, Physics & Astronomy
Northeast corner of Lomas and Yale, Albuquerque, New Mexico
Individuals with disabilities who need an auxiliary aid or service to attend or participate in P&A events should contact Sandra Ortiz (phone: 505-277-5900, email: firstname.lastname@example.org) well in advance to ensure your needs are accomodated. Event handouts can be provided in alternative accessible formats upon request. Please contact Mrs. Ortiz if you need written information in an alternative format.
A schedule of talks within the Department of Physics and Astronomy is available on the P&A web site at http://physics.unm.edu/pandaweb/events/index.php