期刊
NEW JOURNAL OF PHYSICS
卷 17, 期 -, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1367-2630/17/11/112001
关键词
microwave imaging; nanoscale magnetic field sensing; nitrogen vacancy center; diamond
资金
- NCCR QSIT, a competence center
- Swiss NSF, and through SNF Grant [200021 143697/1, 155845]
- European Commission [611143]
- NanoMatFutur program of the german ministry of education and and reasearch
- Swiss National Science Foundation (SNF) [200021_143697] Funding Source: Swiss National Science Foundation (SNF)
We report on imaging of microwave (MW) magnetic fields using a magnetometer based on the electron spin of a nitrogen vacancy (NV) center in diamond. We quantitatively image the magnetic field generated by high frequency (GHz) MW current with nanoscale resolution using a scanning probe technique. Together with a shot noise limited MW magnetic field sensitivity of 680 nT Hz(-1/2) our room temperature experiments establish the NV center as a versatile and high performance tool for MW imaging, which furthermore offers polarization selectivity and broadband capabilities. As a first application of this scanning MW detector, we image the MW stray field around a stripline structure and thereby locally determine the MW current density with a MW current sensitivity of a few nA Hz(-1/2).
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