Electron-Electron Correlation Effects in Low-Dimensional Conductors and Superconductors (eBook, PDF)

Redaktion: Ovchinnikov, Alexandr A.; Ukrainskii, Ivan I.

• Format: PDF

Produktbeschreibung

Advances in the physics and chemistry of low-dimensional systems have been really magnificent in the last few decades. Hundreds of quasi-one-dimensional and quasi-two-dimensional systems have been synthesized and studied. The most popular representatives of quasi-one-dimensional materials are polyacethylenes CH [1] and conducting donor-acceptor molecular crystals TIF z TCNQ. Examples of quasi-two-dimensional systems are high temperature su perconductors (HTSC) based on copper oxides LA2CU04, YBa2Cu306+y and organic superconductors based on BEDT -TIP molecules. The properties of such one- and two-dimensional materials are not yet fully understood. On the one hand, the equations of motion of one-dimensional sys tems are rather simple, which facilitates rigorous solutions of model problems. On the other hand, manifestations of various interactions in one-dimensional systems are rather peculiar. This refers, in particular, to electron--electron and electron-phonon interactions. Even within the limit of a weak coupling con stant electron--electron correlations produce an energy gap in the spectrum of one-dimensional metals implying a Mott transition from metal to semiconductor state. In all these cases perturbation theory is inapplicable. Which is one of the main difficulties on the way towards a comprehensive theory of quasi-one-dimensional systems. - This meeting held at the Institute for Theoretical Physics in Kiev May 15-18 1990 was devoted to related problems. The papers selected for this volume are grouped into three sections.

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Produktdetails

• Verlag: Springer Berlin Heidelberg
• Seitenzahl: 161
• Erscheinungstermin: 6. Dezember 2012
• Englisch
• ISBN-13: 9783642767531
• Artikelnr.: 53102146

Inhaltsangabe

I Correlation Effects in Low
Dimensional Conductors, Superconductors and Model Systems.
The 1
d Hubbard Model: A Landau Luttinger Liquid.
Mean
Field Study of Possible Electronic Pairings in the CuO Plane of HTSO.
Correlation Pairing and Antiferromagnetic Phase Energy in Low
Dimensional Systems of La
Sr
Cu
O and Y
Ba
Cu
O Metaloxides.
Kink Nature of Current Carriers in High
Tc Superconductor Oxides.
Anomaly Index and Induced Charge on a Noncompact Surface in an External Magnetic Field.
About the Influence of Uniaxial Pressure on the Twin Structure in the 1
2
3 System.
II Correlation Effects in Organic Crystals, Molecules and Polymers.
Coexistence of Mott and Peierls Instabilities in Quasi
One
Dimensional Organic Conductors.
Nonlinear Optical Susceptibility for Third Harmonic Generation in Combined Peierls Dielectrics.
Nonlinear Optical Properties of (A
B)x
Polymers.
Application of the Method of Cyclic Permutations to the Calculation of Many
Electron Systems. Polaron States in the Emery Model.
From Incomplete Allowance for Electron Correlation to the Full CI in ?
Systems. The Variational Operator Approach.
Dynamical Correlation in Finite Polymethine Chains.
Electronic Structure and Optical Spectra of Transition Metal Complexes via the Effective Hamiltonian Method.
III Multiparticle Effects in Kinetics and Magnetism.
Magnetic Properties of the Hubbard Model with Infinite Interactions.
Anomalous Transport Through Thin Disordered Layers.
Correlation Effects in Many
Body Reactive Systems.
Fermionization of a Generalized Two
Dimensional Ising Model.
Ferromagnetism of Charge
Transfer Crystals: Curie Temperature of a Organometallic Ferromagnet.
Index of Contributors.