Point-Contact Spectroscopy

Point-Contact Spectroscopy PDF Author: Yu.G. Naidyuk
Publisher: Springer
ISBN: 1475762054
Category : Science
Languages : en
Pages : 303

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Book Description
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, heavy fermion systems, Kond-lattices, mixed valence compounds and more. Superconducting point contacts are considered in respect to Andreev reflection and Josephson effects. Special attention is paid to contact conductance fluctuation, and new trends of research are outlined.

Point-Contact Spectroscopy

Point-Contact Spectroscopy PDF Author: Yu.G. Naidyuk
Publisher: Springer
ISBN: 1475762054
Category : Science
Languages : en
Pages : 303

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Book Description
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, heavy fermion systems, Kond-lattices, mixed valence compounds and more. Superconducting point contacts are considered in respect to Andreev reflection and Josephson effects. Special attention is paid to contact conductance fluctuation, and new trends of research are outlined.

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

Atlas of Point Contact Spectra of Electron-Phonon Interactions in Metals PDF Author: A.V. Khotkevich
Publisher: Springer Science & Business Media
ISBN: 146152265X
Category : Science
Languages : en
Pages : 162

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Book Description
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.

Point Contact Spectroscopy with Nanofabricated Junctions of Spin and Energy-dependent Transport in Heterogeneous Ferromagnetic Systems

Point Contact Spectroscopy with Nanofabricated Junctions of Spin and Energy-dependent Transport in Heterogeneous Ferromagnetic Systems PDF Author: Richard Nam Louie
Publisher:
ISBN:
Category :
Languages : en
Pages : 770

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Book Description


Spectroscopy of Emerging Materials

Spectroscopy of Emerging Materials PDF Author: Eric C. Faulques
Publisher: Springer Science & Business Media
ISBN: 1402023960
Category : Science
Languages : en
Pages : 422

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Book Description
A comprehensive discussion of the key role of modern spectroscopic investigations in interdisciplinary materials science and engineering, covering emerging materials that are either absolutely novel or well-known materials with recently discovered, exciting properties. The types of spectroscopy discussed include optical, electronic and magnetic, UV-visible absorption, Rayleigh scattering, photoluminescence, vibrational, magnetic resonance, electron energy loss, EXAFS, XANES, optical tomography, time-resolved spectroscopy, and point contact spectroscopy. The materials studied are highly topical, with a focus on carbon and silicon nanomaterials including nanotubes, fullerenes, nanoclusters, metallic superconducting phases, molecular materials, magnetic and charge-stripe oxides, and biomaterials. Theoretical treatments are presented of molecular vibrational dynamics, vibration-induced decay of electronic excited states, nanoscale spin-orbit coupling in 2D Si-based structures, and the growth of semiconductor clusters.

Proceedings of the Second International Conference on Point-contact Spectroscopy

Proceedings of the Second International Conference on Point-contact Spectroscopy PDF Author: Jan M. van Ruitenbeek
Publisher:
ISBN:
Category : Electric contacts
Languages : en
Pages : 324

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Book Description


High-Temperature Superconductivity

High-Temperature Superconductivity PDF Author: J. Ashkenazi
Publisher: Springer Science & Business Media
ISBN: 1461533384
Category : Science
Languages : en
Pages : 653

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Book Description
This volume contains the proceedings of the University of Miami Workshop on the subject of "Electronic Structure and Mechanisms for High Temperature Super conductivity". The workshop was held at the James L. Knight Physics Building on the campus of the University of Miami, Coral Gables, 3-9 January 1991. Some 106 scientists from 12 countries attended this workshop, most of whom presented either invited or contributed papers. The reader will find in this volume a series of papers discussing the most im portant experimental and theoretical developments as of winter/spring 1990/1991. Despite more than four years of intensive research on high-T materials, there has c been considerable controversy both with respect to the interpretation of experiment and even more so in connection with the construction of an appropriate theory. In this regard, workshops such as this, gathering scientists with many viewpoints, and varying specialization, and fostering constructive discussions, are important in the de velopment of a common ground. Of major concern in the present context were the basic physical processes involved in high-temperature superconductivity.

Strongly Correlated Systems

Strongly Correlated Systems PDF Author: Adolfo Avella
Publisher: Springer
ISBN: 3662441330
Category : Science
Languages : en
Pages : 329

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Book Description
The continuous evolution and development of experimental techniques is at the basis of any fundamental achievement in modern physics. Strongly correlated systems (SCS), more than any other, need to be investigated through the greatest variety of experimental techniques in order to unveil and crosscheck the numerous and puzzling anomalous behaviors characterizing them. The study of SCS fostered the improvement of many old experimental techniques, but also the advent of many new ones just invented in order to analyze the complex behaviors of these systems. Many novel materials, with functional properties emerging from macroscopic quantum behaviors at the frontier of modern research in physics, chemistry and materials science, belong to this class of systems. The volume presents a representative collection of the modern experimental techniques specifically tailored for the analysis of strongly correlated systems. Any technique is presented in great detail by its own inventor or by one of the world-wide recognized main contributors. The exposition has a clear pedagogical cut and fully reports on the most relevant case study where the specific technique showed to be very successful in describing and enlightening the puzzling physics of a particular strongly correlated system. The book is intended for advanced graduate students and post-docs in the field as textbook and/or main reference, but also for any other researcher in the field who appreciates consulting a single, but comprehensive, source or wishes to get acquainted, in a as painless as possible way, with the working details of a specific technique.

Nanobiophysics

Nanobiophysics PDF Author: Victor A. Karachevtsev
Publisher: CRC Press
ISBN: 9814613975
Category : Medical
Languages : en
Pages : 428

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Book Description
Nanobiophysics is a new branch of science that operates at the interface of physics, biology, chemistry, material science, nanotechnology, and medicine. This book is the first one devoted to nanobiophysics and introduces this field with a focus on some selected topics related to the physics of biomolecular nanosystems, including nucleosomal DNA and

Quantum Mesoscopic Phenomena and Mesoscopic Devices in Microelectronics

Quantum Mesoscopic Phenomena and Mesoscopic Devices in Microelectronics PDF Author: Igor O. Kulik
Publisher: Springer Science & Business Media
ISBN: 9401143277
Category : Science
Languages : en
Pages : 500

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Book Description
Quantum mechanical laws are well documented at the level of a single or a few atoms and are here extended to systems containing 102 to 1010 electrons - still much smaller than the usual macroscopic objects, but behaving in a manner similar to a single atom. Besides the purely theoretical interest, such systems pose a challenge to the achievement of the ultimate microelectronic applications. The present volume presents an up-to-date account of the physics, technology and expected applications of quantum effects in solid-state mesoscopic structures. Physical phenomena include the Aharonov-Bohm effect, persistent currents, Coulomb blockade and Coulomb oscillations in single electron devices, Andreev reflections and the Josephson effect in superconductor/normal/superconductor systems, shot noise suppression in microcontacts and contact resistance quantisation, and overall quantum coherence in mesoscopic and nanoscopic structures related to the emerging physics of quantum computation in the solid-state environment.

Anomalous Rare Earths and Actinides

Anomalous Rare Earths and Actinides PDF Author: J.X. Boucherle
Publisher: Elsevier
ISBN: 1483257231
Category : Science
Languages : en
Pages : 733

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Book Description
Anomalous Rare Earths and Actinides: Valence Fluctuation and Heavy Fermions focuses on the characteristics, reactions, transformations, technologies, and processes involved in the study of anomalous rare earths and actinides. The selection first offers information on lanthanides and actinides and electronic structures in cerium monopnictides. Topics include rare earth metals with fluctuating valencies, 'normal' rare earth metals, and band calculation and Fermi surface. The text then elaborates on neutron scattering studies of anomalous rare earth compounds, including magnetic neutron scattering measurements, stability and localization of magnetic moments, and condensed state. The manuscript examines the transport properties of cerium monochalcogenides and pressure-volume relationships of cerium monochalcogenides and monopnictides. The text also ponders on the theory of anisotropic magnetic behavior in hybridizing actinide systems; band hybridization effects on indirect magnetic coupling of localized moments; and neutron scattering from transuranium materials. The selection is a dependable reference for readers interested in the research on anomalous rare earths and actinides.