Nonlinear transport theory in the metal with tunnel barrier
| Autor: | E. E. Zubov |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Physics Statistical Mechanics (cond-mat.stat-mech) Condensed matter physics Scattering FOS: Physical sciences 02 engineering and technology Conductivity 021001 nanoscience & nanotechnology Condensed Matter Physics Condensed Matter::Mesoscopic Systems and Quantum Hall Effect 01 natural sciences Metal Nonlinear system symbols.namesake Tunnel barrier Ballistic conduction visual_art 0103 physical sciences visual_art.visual_art_medium symbols Linear approximation 0210 nano-technology Hamiltonian (quantum mechanics) Condensed Matter - Statistical Mechanics |
| Popis: | Within the framework of the scattering matrix formalism the nonlinear Kubo theory for electron transport in the metal with a tunnel barrier has been considered. A general expression for the mean electrical current was obtained. It significantly simplifies the calculation of nonlinear contributions to the conductivity of various hybrid structures. In the model of the tunnel Hamiltonian all linear and nonlinear contributions to a mean electrical current are evaluated. The linear approximation agrees with results of other theories. For effective barrier transmission $\tilde T = 1/3$ the ballistic transport is realized with a value of the Landauer conductivity equal to $G = \frac{{2e^2 }}{h}$. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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