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6 July 2004 Extraordinary tunnel effect
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In the model case of a III-V semiconductor, we calculate the evanescent waves and the associated energies throughout the forbidden band gap, taking into account the electron spin. Starting with simple pictures, step by step we include more bands and, finally, the calculation is performed using a k.p technique within a 30-band model. We show that no evanescent state associated with a purely imaginary wave vector may exist in some simple directions. In general, the evanescent wave functions have to involve complex wave vectors associating non-collinear propagation and attenuation directions. Such waves only exist in limited wave-vector and energy domains and these properties have deep consequences on tunneling phenomena.
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Henri-Jean M. Drouhin, Guy Fishman, Nicolas Rougemaille, and Soline Richard "Extraordinary tunnel effect", Proc. SPIE 5359, Quantum Sensing and Nanophotonic Devices, (6 July 2004);

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