Plasma 2006: The 5th International Symposium on the Intrinsic Josephson Effect and Plasma Oscillations in High Tc Superconductors.

Plasma 2006：第五届高温超导体本征约瑟夫森效应和等离子体振荡国际研讨会。

• 批准号: EP/D068789/1
• 负责人: Paul Warburton
• 金额: $ 2.15万
• 依托单位: University College London
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2006
• 资助国家: 英国
• 起止时间: 2006 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FD068789%2F1
• 关键词: Plasma; 2006; 5th; International; Symposium

Experimental and theoretical research on intrinsic Josephson junctions (IJJ's) has proved to be one of the most scientifically and technological fruitful areas of condensed matter research over the last decade. Whilst many other fields of research in high-temperature superconductivity have come and gone since their discovery almost twenty years ago, intrinsic Josephson phenomena remain widely studied throughout the world due to the wide variety of quantum and classical physics which can be studied in IJJ's. In fact in the last year there has been a resurgence of interest in this area due to controversies over both the role of heating in IJJ's and the vortex phase transition from a triangular lattice to a rectangular lattice. These controversies, coupled with the very recent observation of macroscopic quantum tunnelling in IJJ's, suggest that a conference at which the latest developments in IJJ research will be discussed, will be a timely and significant contribution to the further development of new science and applications. The intrinsic Josephson effect was first observed by Kleiner et al. in 1992 and published in two papers which have now been cited nearly 1100 times. The effect is observed in anisotropic cuprate superconductors when a transport current is passed in the c-direction / i.e. perpendicular to the cuprate double-planes. Since the coherence length in the c-direction is less than the plane separation, the planes are Josephson coupled. Hence a single crystal sample of such a superconductor acts as a series array of Josephson junctions. The number of junctions is simply given by the dimension of the crystal in the c-direction divided by the spacing of the cuprate double-planes (of order 1.5 nm). The term intrinsic here distinguishes IJJ's from junctions in which there is an artificially engineered barrier between two superconducting films. Such engineered junctions have proven difficult to fabricate using high-temperature superconductors due to the very short coherence length / in fact the same short coherence length which makes IJJ's a possibility.The discovery has stimulated a wealth of research in Europe, the Far East and (to a lesser extent) the USA which led to the creation of the biennial conference series known as Plasma , the full title being The [nth] International Symposium on the Intrinsic Josephson Effect and Plasma Oscillations in High Tc Superconductors. The first four meetings in the series were held in Sendai, Japan (twice), Pommersfelden (Germany) and Tsukuba (Japan). The fifth meeting will be hosted by University College London and held at the IEE in July 2006.

本征约瑟夫森结的实验和理论研究是近十年来凝聚态研究中最具科技成果的领域之一。虽然许多其他领域的研究在高温超导已经来来去去，因为他们的发现近20年前，内在约瑟夫森现象仍然广泛研究在世界各地，由于各种各样的量子和经典物理，可以在IJJ的研究。事实上，在过去的一年里，由于在IJJ的加热作用和从三角形晶格到矩形晶格的涡旋相变的争议，在这一领域的兴趣已经复苏。这些争议，再加上最近观察到的宏观量子隧穿在IJJ的，建议在IJJ研究的最新发展将被讨论的会议，将是一个及时和重大的贡献，新的科学和应用的进一步发展。本征约瑟夫森效应最早由Kleiner等人于1992年发现，并发表在两篇论文中，至今已被引用近1100次。在各向异性铜氧化物超导体中观察到的效果时，运输电流是通过在c方向/即垂直于铜氧化物双平面。由于c方向上的相干长度小于平面间隔，因此平面是约瑟夫森耦合的。因此，这种超导体的单晶样品充当约瑟夫森结的串联阵列。结的数量简单地由晶体在c方向上的尺寸除以铜氧化物双平面的间距（1.5 nm量级）给出。这里的术语“本征”将IJJ与在两个超导膜之间存在人工设计的势垒的结区分开来。这种工程结已被证明很难使用高温超导体制造，这是由于非常短的相干长度/事实上相同的短相干长度使得IJJ成为可能。这一发现激发了欧洲，远东和欧洲的大量研究。（在较小程度上）美国导致了两年一度的会议系列的创建，称为等离子体，全称是关于高温超导体中的本征约瑟夫森效应和等离子体振荡的第n届国际研讨会。该系列的前四次会议分别在日本仙台（两次）、波默斯费尔登（德国）和筑波（日本）举行。第五次会议将由伦敦大学学院主办，于2006年7月在独立评估学院举行。