Alkali-doped Fullerides: Narrow-band Solids With Unusual Properties
by Olle Gunnarsson /
2004 / English / PDF
12.2 MB Download
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-T
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
c
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.
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.
