1994 Aspen Winter Condensed Matter Conference, Aspen Center for Physics, Aspen, Colorado

9400890在阿斯彭举行的1994年凝聚态物理会议将集中讨论高温超导体对称态的对称性，高温超导材料反常正常态输运和磁性的掺杂关系，以及三维Mott-Hubbard系统的物理。在这些领域中的每一个领域都出现了令人兴奋和有争议的新的实验和理论结果，但这些结果没有得到批判性的检验，也没有与其他工作系统地联系起来。关于配对态的对称性问题，最近的光电子能谱、穿透深度和约瑟夫森隧道效应的实验结果将与核磁共振、比热和中子散射等其他技术的结果进行比较。在正常态性质上，我们将考察输运性质与掺杂的关系以及磁化率的自旋能隙行为。第三个令人感兴趣的话题涉及在高T_c超导体相图的某些区域发生金属-绝缘体转变。某些三维过渡金属氧化物也具有金属-绝缘体转变，但不是超导体。会议将从理论和实验的角度研究这一问题。高温超导体具有显著的物理性能，具有潜在的重大技术应用前景。正是这些材料非常不同寻常的性质给实验和理论从业者带来了令人生畏的挑战。许多明显相互矛盾的实验结果和理论已经发表。这次会议恰逢其时，可以批判性地检查现有数据，并将其与现有理论进行比较，以期确定未来的调查方向。***

9400890 Appelquist The Condensed Matter Physics Conference for 1994 at Aspen will focus on the symmetry of the pairing states of high temperature superconductors, the doping dependence of the anomalous normal state transport and magnetic properties of the high Tc materials, and the physics of three dimensional Mott-Hubbard systems. In each of these areas exciting and controversial new experimental and theoretical results have appeared, but these results have not been critically examined or systematically related to other work. On the topic of the symmetry of the pairing state, recent experimental results of photoemission, penetration depth and Josephson tunneling will be compared with results of other techniques such as NMR, specific heat and neutron scattering. On the normal state properties the nature of the doping dependence of transport properties and the spin gap behavior of the magnetic susceptibility will be examined. The third topic of interest relates to the occurrence of metal-insulator transitions in some regions of the phase diagrams of high Tc superconductors. Certain three dimensional transition metal oxides also feature metal-insulator transitions but are not superconductors. The conference will examine this issue from a theoretical and experimental viewpoint. %%% High temperature superconductors exhibit remarkable physical properties which have potentially significant technological applications. It is the very unusual properties of these materials which offer a daunting challenge to experimental and theoretical practitioners alike. Many apparently contradictory experimental results and theories have been published. This conference is well timed to critically examine the available data and compare it to existing theory with the hope of defining future directions of investigations. ***