New Quantum Limits in Plasmonic Devices

Details New Quantum Limits in Plasmonic Devices New Quantum Limits in Plasmonic Devices

2007-12-19

arxiv.org/abs/0712.3145v2

Physics

Condensed Matter

Other Condensed Matter

5 pages, 2 figures, to appear in Europhysics Letters

Scientific paper

10.1209/0295-5075/84/17006

Surface plasmon polaritons (SPPs) have recently been recognized as an important future technique for microelectronics. Such SPPs have been studied using classical theory. However, current state-of-the-art experiments are rapidly approaching nanoscales, and quantum effects can then become important. Here we study the properties of quantum SPPs at the interface between an electron quantum plasma and a dielectric material. It is shown that the effect of quantum broadening of the transition layer is most important. In particular, the damping of SPPs does not vanish even in the absence of collisional dissipation, thus posing a fundamental size limit for plasmonic devices. Consequences and applications of our results are pointed out.

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