Regensburg 2019 – scientific programme

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 29: Two-dimensional Materials II: graphene (joint session HL/CPP)

CPP 29.7: Talk

Tuesday, April 2, 2019, 15:30–15:45, H36

Scanning Nitrogen-Vacancy Center Magnetic Imaging of Graphene Devices — •Susanne Baumann, Alec Jenkins, Simon Meynell, Haoxin Zhou, Andrea Young, and Ania Bleszynski Jayich — UC Santa Barbara, Santa Barbara, USA

The NV center is a quantum probe that is sensitive to a variety of fields (magnetic, electric, thermal, strain), can achieve nanoscale spatial resolution, is non-invasive, and can operate over a wide range of temperatures; hence it is an ideal tool for studying novel phases of matter that often emerge only below a critical temperature. Here we use a cryogenic scanning NV magnetometer to probe the stray magnetic field of a current running through a single layer graphene device. With this technique we are able to probe different regimes of current flow via their local signatures over a variety of temperatures.