Physical Properties of Novel Materials in High Magnetic Fields

建议对新的凝聚态系统进行实验研究，其中感兴趣的特征能量标度通常（但不完全）低于1 K。其中高磁场在修改维度或基态性质或确定固有物理参数方面起重要作用的材料是主要兴趣。具有这些特征中的一个或多个的材料的实例是有机导体、重电子金属、单和多量子威尔斯和异质结构、基于氧化物的超导体和金属-绝缘体系统。目前的兴趣集中在研究的高磁场诱导相变（TMTSF）2ClO 4，磁场依赖的相图和重电子材料的有效质量，霍尔效应和临界电流的高Tc外延薄膜，和体磁化的半磁半导体和氧化铜反铁磁体。本论文的研究工作将推动有机材料和重电子材料的系统研究，并对最近开发的高转变温度有机盐和氧化铜材料进行新的研究。拟议的工作还将包括增加光学，结构和隧道探针，以实现对正在调查的现象的更微观的理解。

Proposal for the experimental study of novel condensed matter systems where the characteristic energy scale of interest is usually (although not exclusively) below 1K. Materials in which high magnetic fields play an important role in either modifying the dimensionality, or the nature of the ground state, or in determining intrinsic physical parameters, are of main interest. Examples of materials which share one or more of these features are organic conductors, heavy electron metals, single and multiple quantum wells and heterostructures, oxide based superconductors, and metal-insulator systems. Current interest is focused on studies of the high magnetic field induced phase transitions in (TMTSF)2ClO4, the magnetic field dependent phase diagram and effective mass of heavy electron materials, the Hall effect and critical currents of High Tc epitaxial thin films, and the bulk magnetization of both semimagnetic semiconductors and copper oxide antiferromagnets. The proposed work will advance present systematic studies on paradigm organic and heavy electron materials, and initiate new studies on recently developed materials such as the higher transition temperature organic salts and copper oxide materials. The proposed work will also include the addition of optical, structural, and tunneling probes to achieve a more microscopic understanding of the phenomena under investigation.