Wave propagation and tunneling through periodic structures

Konoplev, I.V. and MacInnes, P. and Cross, A.W. and Phelps, A.D.R. and Fisher, L. and Ronald, K. (2008) Wave propagation and tunneling through periodic structures. Applied Physics Letters, 93 (23). 231110. ISSN 0003-6951

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    The phenomenon of tunneling manifests itself in nearly every field of physics. The ability to distinguish a wave tunneling through a barrier from one propagating is important for a number of applications. Here we explore the properties of the wave traveling through the band gap created by a lattice, either as a consequence of tunneling through the barrier or due to the presence of a pass band inside the gap. To observe the pass band for studying tunneling and propagating waves simultaneously, a localized lattice defect was introduced. The differences between the two phenomena are highlighted via waves' dispersion characteristics.