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Raman imaging of DC current profiles in graphene
Mohsen Sabbaghi Department of Electrical Engineering
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How to measure the local electric current through the G peak position and broadening?!
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- The application of electric current breaks the iLO-iTO symmetry!
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My method yields the broadening and frequency of each mode!
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My method yields a closed form expression for the broadening each mode!
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- 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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