Second-order calculation of the local density of states above a nanostructured surface

Author(s): Felix Rueting, Svend-Age Biehs, Oliver Huth, Martin Holthaus
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Article: Phys. Rev. B 82, 115443 (2010), The American Physical Society
Keywords: LDOS, perurbation theory, structured surface, heat transfer
PACS: 44.40.+a, 78.67.-n, 05.40.-a, 41.20.Jb
Abstract:: We have numerically implemented a perturbation series for the scattered electromagnetic fields above rough surfaces, due to Greffet, allowing us to evaluate the local density of states to second order in the surface profile function.We present typical results for thermal near fields of surfaces with regular nanostructures, investigating the relative magnitude of the contributions appearing in successive orders. The method is then employed for estimating the resolution limit of an idealized near-field scanning thermal microscope.
URL: http://www.condmat.uni-oldenburg.de/Biehs/pubs/p_prbnanostruct2010.pdf (text/plain)