By A. Lanzara, G.-H. Gweon, S. Y. Zhou (auth.), J. Ashkenazi, Mikhail V. Eremin, Joshua L. Cohn, Ilya Eremin, Dirk Manske, Davor Pavuna, Fulin Zuo (eds.)

This quantity includes the court cases of the 2004 college of Miami Workshop on Unconventional Superconductivity. The workshop was once the fourth in a sequence of profitable conferences on High-T Superconductivity and C similar issues, which happened on the James L. Knight Physics development at the college of Miami campus in Coral Gables, Florida, in January 1991, 1995, 1999, and 2004. The workshop consisted of 2 consecutive occasions: 1. NATO complicated study Workshop (ARW) on New demanding situations in Superconductivity: Experimental Advances and rising Theories, hung on January 11-14, 2004; 2. Symposium on rising Mechanisms for prime Temperature Superconductivity (SEMHTS), hung on January 15-16, 2004. it truly is tough to jot down a balanced preface to a quantity like this one, but a minimum of we strive to supply the reader a style of what used to be occurring during this workshop. there have been with regards to 100 scientists from worldwide, albeit fewer Russians than we had initially was hoping for. however, the workshop was once very vigorous and we belief that this can be proven during this quantity. The workshop integrated top of the range displays on cutting-edge works, but a key factor, mentioned by means of many, used to be how homogeneous the cuprates are. STM info, in addition to different stories, confirmed that the cuprate superconductors (SC’s) studied have been inhomogeneous, specially within the underdoped regime; whereas experiments, like ARPES and magnetoresistance have tested the lifestyles of a Fermi floor (FS), not less than above a few doping point, within the cuprates.

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Extra resources for 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

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Solutions are bound states of finite energy in N, decaying over a coherence length in S. As first shown by Hu (5), the situation is different when S is a d-wave superconductor, and the normal to the interface corresponds to a node direction. Then, the Saint James cycle has for solution zero energy states. This is because of the difference of phase of ʌ of the order parameter, between the two successive reflections at the interface. Note that these zero energy states persist down to dN = 0. Thus, in addition to being sensitive to the nature and the velocity of the electronic excitations in S, the experiment is also a powerful tool for the study of the symmetry of the order parameter.

R. P««epin, Phys. Rev. B 66, 100506(R) (2002). 66, 100506(R) (2002). [20] T. Eckl et al, Phys. Rev. A. Maier et al Phys. Rev. Lett. 92, 027005) (2004). [21] J. Hirsch and F. Marsiglio, Phys. Rev. B 62, 15131 (2000) and references therein; L. Benfatto et al, Condmat/0305276; T. Stanescu and P. Phillips, Condmat/0301254;J. P. Carbotte and E. Schachinger, Condmat/0404192. OPTICAL PROPERTIES OF (Pr,Ce)2 CuO4 A. Zimmers,1 N. M. P. C. L. C. J. Millis4 1 Laboratoire de Physique du Solide (UPR5 CNRS) ESPCI, 75231 Paris cedex 05, France 2 Center for Superconductivity Research, Department of Physics, University of Maryland, Col- lege Park, Maryland 20742, USA.

Temperature dependence of normalized dip depth in the tunneling spectra (Fig. 2). at low temperatures. This temperature dependence of ∆σ/σh is very similar to the development of a kink structure of the electronic dispersion curves near EF in the antinodal region around (π, 0) and (0, π), which has recently been reported in ARPES experiments on Bi2212 [12, 13, 14]; these features appear to be related. As is well known, a similar kink structure also exists in the dispersion curves near EF along the nodal directions.

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