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Nanotechnology Quantum DOTS by shivbhakta joshiDownload -- ELECTRON TRANSPORT IN QUANTUM DOTS The ongoing miniaturization of solid state devices often leads to the question: “How small can we make resistors, transistors, etc., without changing the way they work?” The question can be asked a different way, however: “How small do we have to make devices in order to get fundamentally new properties?” By “new properties” we particularly mean those that arise from quantum mechanics or the quantization of charge in units of e; effects that are only important in small systems such as atoms. “What kind of small electronic devices do we have in mind?” Any sort of clustering of atoms that can be connected to source and drain contacts and whose properties can be regulated with a gate electrode. Practically, the clustering of atoms may be a molecule, a small grain of metallic atoms, or an electronic device that is made with modern chip fabrication techniques. It turns out that such seemingly different structures have quite similar transport properties and that one can explain their physics within one relatively simple framework. In this paper we investigate the physics of electron transport through such small systems. Quantum Dots by Leo Kouwenhoven and Charles Marcus By confining electrons in three dimensions inside semiconductors, quantum dots can recreate many of the phenomena observed in atoms and nuclei, making it possible to explore new physics in regimes that cannot otherwise be accessed in the laboratory Nano biotechnology - research investing nanomedicine Nanoelectronics Free downloads Nanophysics free downloads Home page |
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