New Challenges in Superconductivity: Experimental Advances and Emerging Theories: Proceedings of the NATO Advanced Research Workshop on New Challenges in Superconductivity: Experimental Advances and Emerging Theories Miami, Florida, U.S.A. 11–14 January 2

This volume contains the proceedings of the 2004 University of Miami Workshop on Unconventional Superconductivity. The workshop was the fourth in a series of successful meetings on High-T Superconductivity and C related topics, which took place at the James L. Knight Physics Building on the University of Miami campus in Coral Gables, Florida, in January 1991, 1995, 1999, and 2004. The workshop consisted of two consecutive events: 1. NATO Advanced Research Workshop (ARW) on New Challenges in Superconductivity: Experimental Advances and Emerging Theories, held on January 11-14, 2004; 2. Symposium on Emerging Mechanisms for High Temperature Superconductivity (SEMHTS), held on January 15-16, 2004. It is hard to write a balanced preface to a volume like this one, yet at least we try to offer the reader a taste of what was happening in this workshop. There were close to a hundred scientists from around the world, albeit fewer Russians than we had originally hoped for. Nevertheless, the workshop was very lively and we trust that this is demonstrated in this volume. The workshop included high-quality presentations on state of the art works, yet a key issue, discussed by many, was how homogeneous the cuprates are. STM data, as well as other reports, showed that the cuprate superconductors (SC’s) studied were inhomogeneous, especially in the underdoped regime; while experiments, like ARPES and magnetoresistance have established the existence of a Fermi Surface (FS), at least above some doping level, in the cuprates. Lattice Dynamics and Electron Pairing in High Temperature Superconductors....Pages 1-8 Direct Arpes and T C Enhancement in Compressively Strained LSCO-214 Films....Pages 9-14 Full Fermi Surface of a High Temperature Superconductor Revealed by Angular Magnetoresistance Oscillations....Pages 15-20 Sum Rules and Energy Scales in BiSrCaCuO....Pages 21-26 Optical Properties of (Pr,Ce) 2 CuO 4 ....Pages 27-30 Tunneling Spectra Near T c Inoverdoped Bi 2 Sr 2 CaCu 2 O 8+δ ....Pages 31-36 Andreev — Saint James Reflections as a Tool for the Study of Unconventional Superconductors....Pages 37-42 Bi 2 Sr 2 CaCu 2 O 8+δ C -Axis Bicrystal Twist and Cross-Whisker Experiments....Pages 43-48 Nodeless Pairing State in Yba 2 Cu 3 O 7 ....Pages 49-54 Nuclear Spin Relaxation and Incommensurate Magnetism in Doped Cuprates....Pages 55-62 Antiferromagnetic Vortex Core in Htsc Studied by Spatially-Resolved NMR....Pages 63-68 Exploring the Oxygen Order in Hg -1223 and Hg -1201 by 199 Hg Mas Nmr....Pages 69-72 Two Fluids Formation in the Normal State of High- T C Superconductor....Pages 73-78 Temperature Dependence of In-Plane Resistivity of Ybco....Pages 79-84 Measurements of the Doping Effects on the In-Plane Paraconductivity in Cuprate Superconductors....Pages 85-90 A Possibility of a Phase Fluctuationlike Effect in Htsc Cuprates....Pages 91-96 Pseudogap Behavior in Underdoped Cuprates....Pages 97-104 Notes on Rvb-Vanilla by Anderson et al.....Pages 105-115 Enhanced T c Near the Metal/Insulator Transition: A New Perspective on Unconventional Superconducting Materials....Pages 117-122 Electron-Lattice Interaction in Htsc Curates....Pages 123-128 High-Temperature Superconductivity of Oxides....Pages 129-134 Bose-Einstein Condensation in a Bosonfermion Model of Cuprates....Pages 135-138 Oxygen-Related Band-Features of the Extended Emerymodel for the Hts Cuprates....Pages 139-144 Condensation Energy for Spin Fluctuations Mechanism of Pairing in High-T c Superconductors....Pages 145-150 Effects of Disorder with Finite Range on the Properties of D -Wave Superconductors....Pages 151-158 Superconductivity in the Background of Two-Dimensional Stripe Superstructure....Pages 159-164 Theory for Key Experiments in Cuprate Superconductors....Pages 165-176 Dynamical Spin Susceptibility in Singlet-Correlated Band Model....Pages 177-186 Stripe-Like Inhomogeneities, Coherence, and the Physics of the High t c Cuprates....Pages 187-212 Self-Supported Superconductivity in Layered Metalochloronitrides....Pages 213-217 First Order Superconducting Transition Near a Ferromagnetic Quantum Critical Point....Pages 219-224 Structures and Superconducting Properties of Sodium Cobalt Oxides....Pages 225-230 Upper Critical Field for Cobalt Oxide Superconductors....Pages 231-234 Disproportionation and Spin Ordering Tendencies in Na x CoO 2 AT x = 1/3....Pages 235-242 Interband Scattering in MgB 2 ....Pages 243-248 Phonon Structure in Point-Contact Spectra of MGB 2 ....Pages 249-258 A Theoretical Approach to Design Unconventional Superconductors by Heterocyclic Molecules....Pages 259-264