ISBN: 9780306482168

Flux quantization experiments indicate that the carriers, Cooper pairs (pairons), in the supercurrent have charge magnitude 2e, and that they move independently.Josephson interference in … Meer...

Flux quantization experiments indicate that the carriers, Cooper pairs (pairons), in the supercurrent have charge magnitude 2e, and that they move independently.Josephson interference in a Superconducting Quantum Int- ference Device (SQUID) shows that the centers of masses (CM) of pairons move as bosons with a linear dispersion relation.Based on this evidence we develop a theory of superconductivity in conventional and mate- als from a unified point of view.Following Bardeen, Cooper and Schrieffer (BCS) we regard the phonon exchange attraction as the cause of superc- ductivity.For cuprate superconductors, however, we take account of both optical- and acoustic-phonon exchange.BCS started with a Hamiltonian containing "electron" and "hole" kinetic energies and a pairing interaction with the phonon variables eliminated.These "electrons" and "holes" were introduced formally in terms of a free-electron model, which we consider unsatisfactory.We define "electrons" and "holes" in terms of the cur- tures of the Fermi surface. "Electrons" (1) and "holes" (2) are different and so they are assigned with different effective masses: Blatt, Schafroth and Butler proposed to explain superconductivity in terms of a Bose-Einstein Condensation (BEC) of electron pairs, each having mass M and a size.The system of free massive bosons, having a quadratic dispersion relation: and moving in three dimensions (3D) undergoes a BEC transition at where is the pair density.; PDF; Scientific, Technical and Medical > Physics > States of matter, Springer Netherlands<

ISBN: 9780306482168

Flux quantization experiments indicate that the carriers, Cooper pairs (pairons), in the supercurrent have charge magnitude 2e, and that they move independently. Josephson interference in… Meer...

Flux quantization experiments indicate that the carriers, Cooper pairs (pairons), in the supercurrent have charge magnitude 2e, and that they move independently. Josephson interference in a Superconducting Quantum Int- ference Device (SQUID) shows that the centers of masses (CM) of pairons move as bosons with a linear dispersion relation. Based on this evidence we develop a theory of superconductivity in conventional and mate- als from a unified point of view. Following Bardeen, Cooper and Schrieffer (BCS) we regard the phonon exchange attraction as the cause of superc- ductivity. For cuprate superconductors, however, we take account of both optical- and acoustic-phonon exchange. BCS started with a Hamiltonian containing â??electronâ? and â??holeâ? kinetic energies and a pairing interaction with the phonon variables eliminated. These â??electronsâ? and â??holesâ? were introduced formally in terms of a free-electron model, which we consider unsatisfactory. We define â??electronsâ? and â??holesâ? in terms of the cur- tures of the Fermi surface. â??Electronsâ? (1) and â??holesâ? (2) are different and so they are assigned with different effective masses: Blatt, Schafroth and Butler proposed to explain superconductivity in terms of a Bose-Einstein Condensation (BEC) of electron pairs, each having mass M and a size. The system of free massive bosons, having a quadratic dispersion relation: and moving in three dimensions (3D) undergoes a BEC transition at where is the pair density. Books > Physics eBook, Springer Shop<

ISBN: 9780306482168

*Theory of High Temperature Superconductivity* / pdf eBook für 149.99 € / Aus dem Bereich: eBooks, Fachthemen & Wissenschaft, Wissenschaften, allgemein Medien > Bücher nein eBook als pdf … Meer...

*Theory of High Temperature Superconductivity* / pdf eBook für 149.99 € / Aus dem Bereich: eBooks, Fachthemen & Wissenschaft, Wissenschaften, allgemein Medien > Bücher nein eBook als pdf eBooks > Fachthemen & Wissenschaft > Wissenschaften allgemein, Springer Netherlands<

ISBN: 9780306482168

Theory of High Temperature Superconductivity: ab 149.99 € eBooks > Fachthemen & Wissenschaft > Wissenschaften allgemein Springer Netherlands eBook als pdf, Springer Netherlands

2006, ISBN: 9780306482168

eBooks, eBook Download (PDF), [PU: Springer Netherlands], Springer Netherlands, 2006