#### Condensed Matter Theory

### Felix Rüting et.al.: Second-order calculation of the local density of states above a nanostructured surface

**Author(s)**:**Felix Rüting, Svend-Age Biehs, Oliver Huth, Martin Holthaus****Title**:**Date of Upload**: 2010-09-28
**Article**:**Phys. Rev. B 82, 115443 (2010)****Keywords**:**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://link.aps.org/doi/10.1103/PhysRevB.82.115443 (text/plain)**

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

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