Probing phonon emission via hot carrier transport in suspended graphitic multilayers
نویسندگان
چکیده
We study hot carrier transport under magnetic fields up to 15 T in suspended graphitic multilayers through differential conductance (dI/dV ) spectroscopy. Distinct high-energy dI/dV anomalies have been observed and shown to be related to intrinsic phonon-emission processes in graphite. The evolution of such dI/dV anomalies undermagnetic fields is further understood as a consequence of inter-Landau level cyclotron–phonon resonance scattering. The observed magneto-phonon effects not only shed light on the physical mechanisms responsible for high-current transport in graphitic systems, but also offer new perspectives for optimizing performance in graphitic nano-electronic devices. © 2011 Elsevier Ltd. All rights reserved.
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