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 under magnetic 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.
@article{arxiv.1004.2987,
title = {Probing phonon emission via hot carrier transport in suspended graphitic multilayers},
author = {Carlos Diaz Pinto and Sungbae Lee and Viktor G. Hadjiev and Haibing Peng},
journal= {arXiv preprint arXiv:1004.2987},
year = {2011}
}
Comments
19 pages, 5 figures, plus supplementary materials (3 pages)