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A new type of spectroscopy, Point-Contact Spectroscopy, was created for the study of conduction electron interaction mechanism with a class of elementary excitations in solids. The goal of this book is to introduce readers to Point Contact Spectroscopy. The physical principles of spectroscopy of quasi-particle excitations in metals at low temperatures by means of point contacts are presented. The point contact constitutes a tiny metallic bridge connecting bulk electrodes. Along with the most thoroughly studied phonon excitations, the interaction of electrons with other quasiparticles (magnons, crystal-field electron excitations, paramagnetic impurities, two-level systems, etc), are reviewed. Various experimental techniques for point contact production are described. Examples of point-contact spectra are presented for pure metals, alloys and compounds, as well as for semimetals and semiconductors, high-Tc and other exotic superconductors, heavy fermion systems, Kondo-lattices, mixed valence compounds and more. Special attention is paid to contact conductance behavior in superconducting states, in high magnetic fields and under high-frequency radiation. The theoretical part of the book is restricted to presenting the main relations without superfluous details. Point-Contact Spectroscopy includes more than 200 figures.

Metals --- Semiconductors --- Spectra. --- Crystalline semiconductors --- Semi-conductors --- Semiconducting materials --- Semiconductor devices --- Crystals --- Electrical engineering --- Electronics --- Solid state electronics --- Materials --- Nanotechnology. --- Spectroscopy and Microscopy. --- Solid State Physics. --- Semiconductors. --- Strongly Correlated Systems, Superconductivity. --- Phase Transitions and Multiphase Systems. --- Molecular technology --- Nanoscale technology --- High technology --- Spectroscopy. --- Microscopy. --- Solid state physics. --- Superconductivity. --- Superconductors. --- Phase transitions (Statistical physics). --- Phase changes (Statistical physics) --- Phase transitions (Statistical physics) --- Phase rule and equilibrium --- Statistical physics --- Superconducting materials --- Superconductive devices --- Cryoelectronics --- Electric conductivity --- Critical currents --- Superfluidity --- Physics --- Solids --- Analysis, Microscopic --- Light microscopy --- Micrographic analysis --- Microscope and microscopy --- Microscopic analysis --- Optical microscopy --- Optics --- Analysis, Spectrum --- Spectra --- Spectrochemical analysis --- Spectrochemistry --- Spectrometry --- Spectroscopy --- Chemistry, Analytic --- Interferometry --- Radiation --- Wave-motion, Theory of --- Absorption spectra --- Light --- Spectroscope --- Qualitative --- Analytical chemistry