alexa Nonlinear Surface Plasmon Assisted Electron Pairing In Gold At Room Temperature
ISSN: 2169-0022

Journal of Material Sciences & Engineering
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3rd International Conference and Exhibition on Materials Science & Engineering
October 06-08, 2014 Hilton San Antonio Airport, USA

Norbert Kroo
ScientificTracks Abstracts: Material Sci Eng
DOI: 10.4172/2169-0022.S1.014
Abstract
Strong electromagnetic field of femtosecond Ti:Sa lasers has been used to excite surface plasmons (SPO) in gold films at room temperature in the Kretschmann geometry. Experimental investigations were carried out using a surface plasmon near field scanning tunneling microscope, measuring its response toexcitations at SPO hot spots on the gold surface. Furthermore, the spectra of photoelectrons, liberated by multi-plasmon absorption, have also been measured by a time-of-flight spectrometer. In both cases new type of anomalies in both the STM and electron TOF signals have been measured in the same laser intensity range.The existence of these anomalies may be qualitatively understood, by using an intensity-dependent effective electronelectron scattering potential, derived earlier in a different context. In this theoretical work, an effective attraction potential has been predicted in the presence of strong inhomogeneous radiation fields, leading to electron pairing.
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