Theory of Copper Oxide Superconductors
(Sprache: Englisch)
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...
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Klappentext zu „Theory of Copper Oxide Superconductors “
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 made the remarkable discovery ofsuperconductivitywithanunbelievinglyhighvalueofT = 35K,bysubs- c 2+ 3+ tuting Ba ions for 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 in1993, 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.
Inhaltsverzeichnis zu „Theory of Copper Oxide Superconductors “
- Introduction- Experimental results of high temperature superconducting cuprates
- Brief review of models of high-temperature superconducting cuprates
- Cluster models for hole-doped CuO6 octahedron and CuO5 pyramid
- MCSCF-CI method: its application to a CuO6 octahedron embedded in LSCO
- Calculated results of a hole-doped CuO5 pyramid in YBa2Cu3O7-
- Electronic structure of a CuO5 pyramid in Bi2Sr2CaCu2O8+
- The Kamimura-Suwa (K-S) model: electronic structure of underdoped cuprates
- Exact diagonalization method to solve the K-S Hamiltonian
- Mean-field approximation for the K-S Hamiltonian
- Calculated results of many-electrons band structures and Fermi surfaces
- Normal state properties of La2-xSrxCuO4
- Electron-phonon interaction and electron-phonon spectral functions
- Mechanism of high temperature superconductivity.
Bibliographische Angaben
- Autoren: Hiroshi Kamimura , Hideki Ushio , Shunichi Matsuno
- 2005, 214 Seiten, mit farbigen Abbildungen, Gebunden, Englisch
- By H. Kamimura, H. Ushio, S. Matsuno et al.
- Verlag: Springer
- ISBN-10: 3540251898
- ISBN-13: 9783540251897
Sprache:
Englisch
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