Theory of Copper Oxide Superconductors

Theory of Copper Oxide Superconductors

English | 2005 | ISBN: 3540251898 | PDF | 212 Pages | 1.9 mb

The objective of this book is to provide an up-to-date comprehensive descr- tion of the Kamimura-Suwa model, which is the ?rst of the present rep- sentative two-component theories in high temperature superconductivity. In 1986 George Bednorz and Karl Alex Muller íž made the remarkable discovery ofsuperconductivitywithanunbelievinglyhighvalueofT = 35K,bysubs- c 2+ 3+ tuting Ba ionsfor La ions in the antiferromagnetic insulator La CuO . 2 4 Soon after this discoveryT rose to 90K by synthesizing YBa Cu O with c 2 3 7?? ade?citinoxygen. Furtherexplorationfornewcopperoxidesuperconducting materials with higherT led to the discovery of Bi-Sr-Ca-Cu-O, Tl-Ba-Ca- c Cu-O and Hg-Ba-Ca-Cu-O compounds in subsequent years. The new class of copper oxide compounds mentioned above is called "cuprates". At present T = 135K under ambient pressure andT = 164K under 31 GPa observed c c in HgBa Ca Cu O are the highest value so far obtained. The Kamimura- 2 2 3 8 Suwa model, which was originally developed in 1993, is a theory of these real copper oxide superconducting materials. Since undoped La CuO is a 2 4 Mott-Hubbard antiferromagnetic insulator, its electronic structure can not beexplained bytheordinaryone-electron energybandtheory. Inthiscontext the important role of electron-correlation was pointed out. 2+ On theother hand, ad-hole state in each Cu ion in theligand ?eld with octahedral symmetry is orbitally doubly-degenerate so that it is subject to strong Jahn-Teller interaction in La CuO. Asaresult,aCuO octahedron 2 4 6 in La CuO is elongated along thec-axis due to the Jahn-Teller distortion.


[Fast Download] Theory of Copper Oxide Superconductors

Related eBooks:
Computational Fluid Dynamics in Practice
A Paradigm Called Magnetism
Elementary Physics of Complex Plasmas
A Group-Theoretical Approach to Quantum Optics: Models of Atom-Field Interactions
Electronic Beam Steering and Polarization Agile Planar Antennas in Liquid Crystal Technology
Topological Microfluidics: Nematic Liquid Crystals and Nematic Colloids in Microfluidic Environment
Cosmic Magnetic Fields
Elementary Particle Theory. Volume 2, Quantum Electrodynamics
Numerical Simulation of Reactive Flow, Second Edition
Large Hadron Collider Phenomenology
Quantum Mechanics: An Introduction
Lectures on QED and QCD: Practical Calculation and Renormalization of One- and Two-loop Diagrams
Copyright Disclaimer:
This site does not store any files on its server. We only index and link to content provided by other sites. Please contact the content providers to delete copyright contents if any and email us, we'll remove relevant links or contents immediately.