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Probing spin and charge on the nanoscale

Craig J. Hawker, University of California-Santa Barbara, DMR 11210523. AFM cantilever. Probing spin and charge on the nanoscale. Focused green laser. Microwaves for ESR. Diamond NV center. Optically detected magnetic resonance of a single NV center. Complex oxide.

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Probing spin and charge on the nanoscale

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  1. Craig J. Hawker, University of California-Santa Barbara, DMR 11210523 AFM cantilever Probing spin and charge on the nanoscale Focused green laser Microwaves for ESR Diamond NV center Optically detected magnetic resonance of a single NV center Complex oxide We are building a scanning probe microscope to study spin and charge in complex oxides on the nanoscale. The magnetic sensing element is a nitrogen-vacancy center (NV) in diamond, an atomic sized defect. Optically detected magnetic resonance (figure) of a single NV center’s energy spectrum probes its local magnetic field, which induces a 2.8 MHz/G shift in the NV’s energy levels. The splitting in the figure, shown by the red line, indicates a 20 G field. With our scanning magnetometer, we aim to achieve single electron spin sensitivity with 10 nm spatial resolution.

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