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Raman imaging of DC current profiles in graphene

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Presentation on theme: "Raman imaging of DC current profiles in graphene"— Presentation transcript:

1 Raman imaging of DC current profiles in graphene
Mohsen Sabbaghi Department of Electrical Engineering

2 How to measure the local electric current through the G peak position and broadening?!

3 - The application of electric current breaks the iLO-iTO symmetry!

4 My method yields the broadening and frequency of each mode!
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5 My method yields a closed form expression for the broadening each mode!

6 - Matching the differential Raman data of the G peak at each point of sample with the simulated position and broadening yields the current density at each point. - This method is only applicable to large-area samples of graphene with a uniform Fermi energy of around 98 meV.


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