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portada Atlas of Point Contact Spectra of Electron-Phonon Interactions in Metals
Type
Physical Book
Author
Translated by
Publisher
Language
English
Pages
151
Format
Paperback
Dimensions
23.4 x 15.6 x 0.9 cm
Weight
0.24 kg.
ISBN13
9781461359555
Categories

Atlas of Point Contact Spectra of Electron-Phonon Interactions in Metals

Igor K. Yanson (Author) · A. V. Khotkevich (Author) · Randal C. Reinertson (Translated by) · Springer · Paperback

Atlas of Point Contact Spectra of Electron-Phonon Interactions in Metals - Khotkevich, A. V. ; Reinertson, Randal C. ; Yanson, Igor K.

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Synopsis "Atlas of Point Contact Spectra of Electron-Phonon Interactions in Metals"

The characteristics of electrical contacts have long attracted the attention of researchers since these contacts are used in every electrical and electronic device. Earlier studies generally considered electrical contacts of large dimensions, having regions of current concentration with diameters substantially larger than the characteristic dimensions of the material: the interatomic distance, the mean free path for electrons, the coherence length in the superconducting state, etc. [110]. The development of microelectronics presented to scientists and engineers the task of studying the characteristics of electrical contacts with ultra-small dimensions. Characteristics of point contacts such as mechanical stability under continuous current loads, the magnitudes of electrical fluctuations, inherent sensitivity in radio devices and nonlinear characteristics in connection with electromagnetic radiation can not be understood and altered in the required way without knowledge of the physical processes occurring in contacts. Until recently it was thought that the electrical conductivity of contacts with direct conductance (without tunneling or semiconducting barriers) obeyed Ohm's law. Nonlinearities of the current-voltage characteristics were explained by joule heating of the metal in the region of the contact. However, studies of the current-voltage characteristics of metallic point contacts at low (liquid helium) temperatures [142] showed that heating effects were negligible in many cases and the nonlinear characteristics under these conditions were observed to take the form of the energy dependent probability of inelastic electron scattering, induced by various mechanisms.

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