[PDF] Magnetic Field Induced Commensurability And Correlation Effects In Low Dimensional Organic Conductors eBook

Author : D. Jerome
Publisher : Springer Science & Business Media
Page : 524 pages
File Size : 20,22 MB
Release : 2013-12-14
Category : Technology & Engineering
ISBN : 1489936114

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Research activities in low dimensional conductors have shown a rapid growth since 1972 and have led to the discovery of new and remarkable phy sical properties unique to both molecular and inorganic conductors exhibi ting one-dimensional transport behaviour. This NATO Institute was a conti nuation of aseries of NATO Advanced Study Institutes of Worshops which took place at regular intervals till 1979. This is the first time, however, that charge density wave transport and electronic properties of low dimen sional organic conductors are treated on an equal footing. The program of the Institute was framed by tutorial lectures in the theories and experiments of low dimensional conductors. The bulk of the course covered two series of low-dimensional mate rials with their respective properties. 1) The I-D inorganic conductors exhibiting the phenomena of sliding charge density waves, narrow band noise, memory effects, etc ..• 2) Low-dimensional crystallized organic conductors giving rise to various possibilities of ground states, spin-Peierls, spin density wave, Peierls, superconductivity and magnetic-field induced spin density wave, etc ... Since it has been established from the beginning that this Institute was to be devoted essentially to the Physics of Low Dimensional Conductors, only one main course summarized the progress in chemistry and material preparation.

Author : Alexandr A. Ovchinnikov
Publisher : Springer
Page : 180 pages
File Size : 15,86 MB
Release : 1991
Category : Science
ISBN :

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This volume presents lectures on new approaches to electron-electron and electron-phonon correlation effects in low-dimensional materials: organic solids, conducting polymers such as polyacetylenes (CH)x, organic and copper-oxide superconductors with high Tc values. Key points: correlation effects in optical spectra, magnetic properties, nonlinear processes, electrons in 1-d and 2-d solids and their molecular components, new approaches to 1-d and 2-d Hubbard models, Peierls model, multi-configurational approach to large systems, calculation of Madelung energy in complex crystals, quantum field model, kink effects in optical spectra of high Tc superconductors. Researchers in the fields of solid state physics and superconductivity will find this collection of papers particularly useful.

Author : Philip W Anderson
Publisher : World Scientific
Page : 884 pages
File Size : 24,12 MB
Release : 2005-01-26
Category : Science
ISBN : 9814482528

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This unique volume presents the scientific achievements of Nobel laureate Philip Anderson, spanning the many years of his career. In this new edition, the author has omitted some review papers as well as added over 15 of his research papers. As in the first edition, he provides an introduction to each paper by explaining the genesis of the papers or adding some personal history.The book provides a comprehensive overview of the author's work which include significant discoveries and pioneering contributions, such as his work on the Anderson model of magnetic impurities and the concept of localization; the study of spin glasses, the fluctuating valence problem and superexchange; his prediction of the existence of superfluidity in He3; his involvement in the discovery of the Josephson effect; his discovery of the “Higgs” mechanism in elementary particle physics; and so on.The new papers added to this edition include ”Pressure Broadening in the Microwave and Infrared Regions” — a condensation of most of the author's thesis; ”Ordering and Antiferromagnetism in Ferrites” — the best-known of the papers written by the author involving what are known as “frustrated” lattices; and ”Localized Magnetic States in Metals” — a paper mentioned in his Nobel Prize citation along with localization and superexchange; to name a few.A Career in Theoretical Physics is an essential source of reference for physicists, chemists, materials scientists and historians of science. It is also suitable reading for graduate students.

Author : Si Wu
Publisher :
Page : 234 pages
File Size : 13,69 MB
Release : 2010
Category :
ISBN :

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In the past three decades, quasi-low-dimensional organic materials haveattracted intense interests, both experimentally and theoretically. Due totheir reduced dimensionality and relatively low carrier concentration, many organic materials exhibit strong electron correlations and numerousinstabilities of the normal metallic state. The energy scales of suchinstabilities are often so low that the ground states can be changed by applyinga reasonably strong magnetic field. Therefore, magnetic field is an effectivetool for the study of quasi-low-dimensional organic materials. In this thesis, we will investigate two of these magnetic field related phenomena. In the first part, we will present our unified theory of angular magnetoresistanceoscillations observed in organic conductors. We will demonstrate that, in spite ofthe absence of Landau level quantization for open Fermi surfaces in a magnetic field, a new quantum effect - Bragg reflections of electrons moving in theextended Brillouin zone - determines unusual magnetic propertiesof these materials. We will demonstrate that, at commensurate directions of amagnetic field, the electron motion shows 1D 2 Ddimensional crossover and leads to strong resistivity minima. We will present ananalytic expression for interlayer resistivity, by both linear response formalism andsolving the Boltzmann kinetic equation in the extended Brillouin zone. In two limiting cases, our general solution reduces to the results previouslyobtained for the LMA effects and LNL oscillations. We demonstrate that our theoretical results are in good qualitative and quantitativeagreement with the existing measurements of resistivity in (TMTSF)

Author : Andrei Lebed
Publisher : Springer
Page : 754 pages
File Size : 43,3 MB
Release : 2009-09-02
Category : Technology & Engineering
ISBN : 9783540845812

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This bang up-to-date volume contains the distilled wisdom of some of the world’s leading minds on the subject. Inside, there is a treasure trove of general (tutorial) and topical reviews, written by leading researchers in the area of organic superconductors and conductors. The papers hail from all over the world, as far afield as the USA and Australia. They cover contemporary topics such as unconventional superconductivity, non-Fermi-liquid properties, and the quantum Hall effect.