Fluctuations and Localization in Mesoscopic Electron Systems

Fluctuations and Localization in Mesoscopic Electron Systems
Author :
Publisher : World Scientific
Total Pages : 219
Release :
ISBN-10 : 9789810242091
ISBN-13 : 9810242093
Rating : 4/5 (093 Downloads)

Book Synopsis Fluctuations and Localization in Mesoscopic Electron Systems by : Martin Janssen

Download or read book Fluctuations and Localization in Mesoscopic Electron Systems written by Martin Janssen and published by World Scientific. This book was released on 2001 with total page 219 pages. Available in PDF, EPUB and Kindle. Book excerpt: The quantum phenomena of tunneling and interference show up not only in the microscopic world of atoms and molecules, but also in cold materials of the real world, such as metals and semiconductors. Though not fully macroscopic, such mesoscopic systems contain a huge number of particles, and the holistic nature of quantum mechanics becomes evident already in simple electronic measurements. The measured quantity fluctuates as a function of applied fields in an unpredictable, yet reproducible way. Despite this fingerprint character of fluctuations, their statistical properties are universal, i.e. they are the same for a large class of different mesoscopic systems, having only very few parameters in common. Localization of electrons is a dramatic effect of destructive interference. As a consequence a metal can become an insulator while reaching mesoscopic scales. Based on elementary quantum and statistical physics, this text introduces the theory of mesoscopic electron systems. It focuses on universal characteristics of fluctuations and on the localization mechanism. General concepts and methods are stressed, such as scaling laws for distribution functions. Tools from condensed matter theory are used flexibly. Involved technical details are skipped so as to present a broad overview of the field, including topics like quantum dots, the quantum Hall effect and a number of the most recent developments.


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