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Rogachev, Andrey | Effect of morphology on the superconductor-insulator transition in one-dimensional nanowires | We study the effect of morphology on the low-temperature behavior of superconducting nanowires which vary in length from 86 nm to 188 nm. A well-defined superconductor-insulator transition is observed only in the family of homogeneous wires, in which case the transition occurs when the normal resist... | One-dimensional wires; Superconductor-insulator transition; Homogeneous wires; Inhomogeneous wires; Morphology; Low-temperature behavior | 2004-05 |
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Mishchenko, Eugene | Plasmon attenuation and optical conductivity of a two-dimensional electron gas | In a ballistic two-dimensional electron gas, the Landau damping does not lead to plasmon attenuation in a broad interval of wave vectors q≤kF . Similarly, it does not contribute to the optical conductivity σ(ω,q) in a wide domain of its arguments, EF>ω>qvF , where EF , kF , and vF are, respec... | Optical conductivity; Plasmon-phonon conversion; Landau damping | 2004-05 |