Alkali-doped fullerides : narrow-band solids with unusual properties / Olle Gunnarsson.

Format:

Book

Author/Creator:

Gunnarsson, Olle.

Language:

English

Subjects (All):

Superconductors.

Superconductivity.

Electric conductivity.

Metal-insulator transitions.

Electron-electron interactions.

Electron-phonon interactions.

Jahn-Teller effect.

Physical Description:

1 online resource (xvii, 282 p. ) ill.

Edition:

1st ed.

Place of Publication:

River Edge, N.J. : World Scientific, c2004.

Language Note:

English

Summary:

Alkali-doped fullerides have attracted strong interest since their production became possible about fifteen years ago. This book presents recent work which may solve intriguing problems arising from a variety of remarkable properties. For example, these solids are superconductors with high transition temperatures, although the similarity between the electronic and phonon energy scales should suppress superconductivity. Moreover, the Ioffe-Regel condition for electrical conductivity is strongly violated. The book shows why superconductivity is nevertheless possible, owing to a local pairing mechanism. The Ioffe-Regel condition is derived quantum-mechanically, and it is explained why the underlying assumptions are violated for fullerides and high-Tc cuprates, for example. The book treats electronic and transport properties, reviewing theoretical and experimental results. It focuses on superconductivity, electrical conductivity and metal-insulator transitions, emphasizing the electron-electron and electron-phonon interactions as well as the Jahn-Teller effect.

Contents:

ch. 1. Structural properties. 1.1. Structure of the C[symbol] molecule. 1.2. Structures of some solids

ch. 2. Models and parameters. 2.1. Models of hopping. 2.2. Coulomb interaction. 2.3. Electron-phonon interaction. 2.4. Electron-plasmon coupling. 2.5. Current operator

ch. 3. Phonons and electron-phonon coupling strength. 3.1. Intramolecular modes. 3.2. Alkali phonons. 3.3. Librations. 3.4. Intermolecular modes

ch. 4. Interacting electron-phonon system. 4.1. Free molecules. 4.2. Spectral functions in metallic fullerenes. 4.3. Model calculation

ch. 5. Electronic structure. 5.1. Band structure calculations. 5.2. Tight-binding calculations. 5.3. GW calculations. 5.4. Susceptibility. 5.5. Specific heat. 5.6. Density of states. 5.7. Hall effect. 5.8. Photoemission

ch. 6. Plasmons. 6.1. Experimental results. 6.2. Plasmon dispersion. 6.3. Plasmon broadening

ch. 7. Metal-insulator transition. 7.1. Experimental results and U/W ratio. 7.2. Calculational approach: Projection Quantum Monte Carlo method. 7.3. Degeneracy dependence. 7.4. Filling dependence. 7.5. Lattice structure dependence. 7.6. Effects of electron-phonon and Hund's rule coupling. 7.7. Effects of noncubic lattice structure

ch. 8. Electrical resistivity. 8.1. Mean free path. 8.2. Resistivity saturation. 8.3. Experimental results. 8.4. Boltzmann theory of resistivity. 8.5. Beyond the Boltzmann equation. 8.6. Different classes of saturation behavior

ch. 9. Superconductivity. 9.1. Experimental results. 9.2. Retardation effects and Coulomb pseudopotential. 9.3. Local pairing. 9.4. Electronic mechanism. 9.5. Isotope effect. 9.6. Comparison with experiments

ch. 10. Discussion.

Notes:

Bibliographic Level Mode of Issuance: Monograph

Includes bibliographical references (p. 261-277) and index.

ISBN:

9786611935436

9781281935434

1281935433

9789812794956

9812794956

OCLC:

815752478