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Frequency Dependence of Dielectric Loss in Condensed Matter. Revision

Frequency Dependence of Dielectric Loss in Condensed Matter. Revision
Author: K. L. Ngai
Publisher:
Total Pages: 35
Release: 1979
Genre:
ISBN:

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The dielectric response of condensed matter below microwave frequencies has been known to depart from the Debye behavior, sometimes to the point of being unrecognizable and yet the generally accepted interpretations of the departures have seldom deviated from the Debye philosophy of simple relaxation phenomena in non-interacting systems. It was recently recognized, from a synoptic view of the experimental data involving a wide range of materials, that there exists a remarkable universality of dielectric response behavior regardless of physical structure types of bonding, chemical type, polarizing species and geometrical configurations. This strongly suggests that there should exist a correspondingly universal mechanism of dielectric polarization in condensed matter. The present work proposes such a universal mechanism associated with the existence of some ubiquitous very low energy excitations in the system. These excitations exhibit an infrared divergent-like response to transitions of the polarizing species induced by a time-varying electric field in the dielectric and give rise to the universal dielectric response. (Author).


Frequency Dependence of Dielectric Loss in Condensed Matter

Frequency Dependence of Dielectric Loss in Condensed Matter
Author: K. L. Ngai
Publisher:
Total Pages: 33
Release: 1978
Genre:
ISBN:

Download Frequency Dependence of Dielectric Loss in Condensed Matter Book in PDF, ePub and Kindle

The dielectric response of condensed matter below microwave frequencies has been known to depart from the Debye behavior, sometimes to the point of being unrecognizable and yet the generally accepted interpretations of the departures have seldom deviated from the Debye philosophy of simple relaxation phenomena in non-interacting systems. It was recently recognized, from a synoptic view of the experimental data involving a wide range of materials, that there exists a remarkable universality of dielectric response behavior regardless of physical structure, types of bonding, chemical type, polarizing species and geometrical configurations. This strongly suggests that there should exist a correspondingly universal mechanism of dielectric polarization in condensed matter. The present work proposes such a universal mechanism associated with the existence of some ubiquitous very low energy excitations in the system. These excitations exhibit an infrared divergent-like response to transitions of the polarizing species induced by a time-varying electric field in the dielectric and give rise to the universal dielectric response. (Author).


The Dielectric Function of Condensed Systems

The Dielectric Function of Condensed Systems
Author: L.V. Keldysh
Publisher: Elsevier
Total Pages: 595
Release: 2012-12-02
Genre: Science
ISBN: 0444600531

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Much progress has been made in the understanding of the general properties of the dielectric function and in the calculation of this quantity for many classes of media. This volume gathers together the considerable information available and presents a detailed overview of the present status of the theory of electromagnetic response functions, whilst simultaneously covering a wide range of problems in its application to condensed matter physics. The following subjects are covered: - the dielectric function of the homogeneous electron gas, of crystalline systems, and of inhomogeneous matter; - electromagnetic fluctuations and molecular forces in condensed matter; - electrodynamics of superlattices.


Dielectric Constant and Loss Data

Dielectric Constant and Loss Data
Author: William B. Westphal
Publisher:
Total Pages: 256
Release: 1972
Genre: Dielectric loss
ISBN:

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Recent Developments in Condensed Matter Physics

Recent Developments in Condensed Matter Physics
Author: J. T. Devreese
Publisher: Springer Science & Business Media
Total Pages: 418
Release: 2013-03-14
Genre: Science
ISBN: 1468439022

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These volumes contain the invited and contributed talks of the first general Conference of the Condensed Matter Division of the European Physical Society, which took place at the campus of the University of Antwerpen (Universitaire Instelling Antwerpen) from April 9 till 11, 1980. The invited talks give a broad perspective of the current state in Europe of research in condensed matter physics. New developments and advances in experiments as well as theory are reported for 28 topics. Some of these developments, such as the recent stabilization of mono-atomic hydrogen, with the challenging prospect of Bose condensation, can be considered as major break throughs in condensed matter physics. Of the 65 invited lecturers, 54 have submitted a manuscript. The remaining talks are published as abstracts. The contents of this first volume consists of 9 plenary papers. Among the topics treated in these papers are: - electronic structure computations of iron the density functional theory hydrogen in amorphous si topologically disordered materials nuclear antiferromagnetism stabilization of mono-atomic hydrogen gas covalent and metallic glasses nonlinear excitations in ferroelectrics.


Dielectric Relaxation in Solids

Dielectric Relaxation in Solids
Author: Andrzej K. Jonscher
Publisher:
Total Pages: 400
Release: 1983
Genre: Technology & Engineering
ISBN:

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Theory of Dielectrics

Theory of Dielectrics
Author: Herbert Fröhlich
Publisher:
Total Pages: 202
Release: 1949
Genre: Dielectrics
ISBN:

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