Studies of High Temperature Superconductors, Volume 29Anant Narlikar Six papers by physicists from the Japan, India, Brazil and the US address some of the broad frontal issues of superconductivity, which include the mechanisms of high-temperature superconductivity, extra-high-temperature phenomena, the normal state pseudogap, the observations of the isotope effect in a host of different superconducting systems and their explanations, and the unusual features of strongly correlated electron systems like heavy fermions. Two extended papers explore the importance of positron annihilation and using electron spin resonance techniques to study superconducting materials. The treatments should be accessible to working scientists and engineers and to graduate students of physics, chemistry, materials science, solid-state electronics, and other disciplines. |
From inside the book
Results 1-5 of 56
Page 2
... plane - number dependence or " distance scaling " follows naturally from the polar mode location ( s ) relative to the planes [ 1 ] . The rapid inverse - temperature variation of the isotope effect reflects vigorous lattice ...
... plane - number dependence or " distance scaling " follows naturally from the polar mode location ( s ) relative to the planes [ 1 ] . The rapid inverse - temperature variation of the isotope effect reflects vigorous lattice ...
Page 3
... plane state [ 1 ] . Applicability to alkali - Cso follows from the low spatial symmetry from the 15 A unit cell . The description is unambiguous in this case , as there is one polar mode ( the alkali - C60 mode ) and it is uniformly ...
... plane state [ 1 ] . Applicability to alkali - Cso follows from the low spatial symmetry from the 15 A unit cell . The description is unambiguous in this case , as there is one polar mode ( the alkali - C60 mode ) and it is uniformly ...
Page 4
... plane polar LO mode [ 5 ] combined with early mode measurements [ 6 ] . The shift with the gap data are shown in Table I , which displays the unification and prediction range provided by the low - symmetry state . The state is the ...
... plane polar LO mode [ 5 ] combined with early mode measurements [ 6 ] . The shift with the gap data are shown in Table I , which displays the unification and prediction range provided by the low - symmetry state . The state is the ...
Page 5
... plane mode , from the match to the gaps ( Table I ) . Alkali - Co represents a model for the low- symmetry polar effect , as there is just one polar mode , the alkali - C60 mode , so the effect is unambiguous , and as indicated it ...
... plane mode , from the match to the gaps ( Table I ) . Alkali - Co represents a model for the low- symmetry polar effect , as there is just one polar mode , the alkali - C60 mode , so the effect is unambiguous , and as indicated it ...
Page 7
... plane polar mode [ 9 ] [ 7 ] . The PG is taken from a slight dip cut from the distribution measured by photoemission spectroscopy in an improved quality crystal ; the doping dependence is shown in Fig . 2. Note that nondispersive ...
... plane polar mode [ 9 ] [ 7 ] . The PG is taken from a slight dip cut from the distribution measured by photoemission spectroscopy in an improved quality crystal ; the doping dependence is shown in Fig . 2. Note that nondispersive ...
Contents
| 2 | |
| 3 | |
| 6 | |
| 8 | |
| 10 | |
| 11 | |
| 14 | |
High Tc superconductivity mechanism | 109 |
Comparison with other theories | 115 |
Pseudogap origin and consequences | 118 |
Conclusion | 127 |
Appendix | 129 |
References | 132 |
Probing HTSC by Positron Lifetime and Doppler Broadening Investigations | 139 |
Probing solids with positrons | 141 |
| 15 | |
| 16 | |
| 17 | |
| 18 | |
| 21 | |
| 26 | |
| 30 | |
| 45 | |
| 46 | |
NMR Study of Strongly Correlated Superconductors Heavy Fermion High Tc and Related Materials | 51 |
Mechanism of the superconductivity in the highTc cuprate | 75 |
Spin gap in highTc superconductors | 89 |
Hole distribution | 93 |
Conclusion | 96 |
References | 98 |
Spin Glass Freezing and Mechanism of High Tc Superconductivity | 105 |
Spin glass cluster phase transition | 106 |
Positron annihilation in HTSC and conventional Superconductors | 148 |
Early positron probing of HTSC samples | 149 |
Current experiments on positron lifetime across the superconducting transition | 157 |
Current observations of S vs T minima in the Tcregion | 166 |
Conclusions and future directions | 172 |
References | 175 |
ESR in Metals and Superconductors | 179 |
Theory of ESR linewidths in metals | 182 |
Relevant models for superconductivity | 188 |
Pseudometallic systems | 191 |
Metals and alloys | 194 |
Superconductors | 199 |
Spin dynamics of high temperature superconductors | 210 |
Conclusions | 229 |
Subject Index | 235 |
Common terms and phrases
Appendix applied Asayama assumes behaviour calculations cluster component compounds concentration conduction electrons constant coupling critical crystal cuprates curve d-wave decrease density dependence described direction discussed distribution doping drift effect electrons energy enhancement et al exchange exist experimental experiments Fermi field Figure fluctuation frequency function given gives high temperature impurity increase indicating interaction isotope coefficient Kitaoka Knight shift lattice Lett lifetime linewidth magnetic magnetic field materials measured mechanism metals mobility nature normal observed obtained oxygen pairing parameters peak phase phonon Phys Physica plane plotted polarization positron annihilation present probe properties range region relation relaxation resonance respectively samples scattering seen shift shown shows similar single Solid spin strong structure superconductivity symmetry temperature temperature dependence theory transition volume
Popular passages
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