Inter-american materials research: high pressure studies of quantum phase transitions by muon spin relaxation and complementary methods

在绝对零度下，物质的电子相间发生量子相变。对这种相变的研究是当前凝聚态物理的一个重要主题。静水压力已成为通过量子相变调谐系统的关键参数。在这项提议中，我们的目标是在高压研究的最新进展的基础上，开发一种独特的高压能力来执行Muon自旋弛豫测量。Muon自旋弛豫是一种非常灵敏的材料磁性探头。根据这项提议，我们将为高质量单晶的高压/低温实验开发新的能力。这些实验所需的晶体将在麦克马斯特大学和多伦多大学的实验室中合成。

Quantum phase transitions occur between electronic phases of matter at absolute zero temperature. The study of such phase transitions is a key theme of current condensed matter physics. Hydrostatic pressure has emerged as a key parameter for tuning a system through a quantum phase transition. In this proposal we aim to build on recent advances in high pressure research to develop a unique high pressure capability for performing muon spin relaxation measurements. Muon spin relaxation is a supremely sensitive magnetic probe of materials. Under this proposal we will develop new capabilities for high-pressure/low-temperature experiments on high quality single crystals. Crystals for these experiments will be synthesized in our laboratories at McMaster University and the University of Toronto.