One-way surface states due to nonreciprocal light-line crossing. (10th June 2015)

• Record Type: Journal Article
• Authors: Abbasi, Fereshteh; Davoyan, Arthur R; Engheta, Nader
• Is Part Of: New journal of physics. Volume 17:Number 6(2015:Jun.)
• Publication Date: 2015-06-10
• Subjects: surface wave -- magneto-optics -- nonreciprocity; 78.20.Ls -- 42.70.Qs -- 73.20.Mf -- 85.70.Sq; Physics -- Periodicals; Physics; Periodicals; 530.05
• DOI: 10.1088/1367-2630/17/6/063014
• Languages: English
• ISSNs: 1367-2630

Abstract

Abstract: We revisit the problem of the surface plasmon polariton (SPP) propagation at a metal–magneto-optical dielectric interface and predict a conceptually different regime of one-way surface wave propagation. We show that in the presence of magnetization, the nonreciprocal crossing of the light-line by dispersion curve of SPPs is possible. This leads to the formation of leaky-wave surface states in one of the propagation directions, whereas in other direction SPPs are confined to the interface. We show that such a regime of surface plasmon propagation is fundamentally different from one-way regimes of surface waves predicted earlier.