Novel Phases and Physical Properties of Classical and Quantum Materials at Extreme Conditions

极端条件下经典和量子材料的新相和物理性质

• 批准号: RGPIN-2020-06383
• 负责人: Desgreniers, Serge
• 金额: $ 2.04万
• 依托单位: University of Ottawa
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2021
• 资助国家: 加拿大
• 起止时间: 2021-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=741178
• 关键词: Novel; Phases; Physical; Properties; Classical

The proposed research and HQP training programs in physics of classical and quantum materials under extreme pressure and temperature conditions represent a continuation of current projects and new research initiatives. The program is comprised of four main long-term research goals: (a) unravel novel dense phases in classical and quantum materials which may present unusual physical properties at extreme conditions, achieved by the extensive use of diamond anvil cell techniques (b) compare the experimentally measured physical properties of novel dense phases of materials with computationally simulated properties to refine both the experimental results and computational modelling (c) make an intensive use of synchrotron radiation to probe dense materials (d) develop innovative experimental methods, devices, and nanosensors necessary to probe condensed matter submitted to extreme conditions. As short-term goals during the next granting period, we will (i) study the physical properties of dense 2D and quasi-2D quantum systems including van der Walls intercalated materials with the main, but not exclusive, focus on the exploration of BN and C based solids at extreme conditions. In this case, the use of extreme temperature and pressure is meant to induce changes of the optical/electronic response by tuning atomic interactions in the solid state for potentially useful applications in electronics and sensing (ii) pursue the exploration of conditions for the synthesis of novel binary compounds formed by nitrogen mixed with elements and other simple molecules, using pressure to induce unconventional bonding at high density (iii) carry out a systematic study of the conditions for binary compound formation and the physical properties of these novel dense van der Waals solids as innovative solid state energy storage systems and novel nitride phases with uncommon stoichiometry and unusual physical properties (iv) pursue the development of a new method for the study of quantum materials at extreme conditions. i.e., THz time-domain spectroscopy at high pressure using femtosecond laser-based radiation sources (v) grow diamond and diamond-like materials with controlled impurity level and crystalline microstructure by chemical vapour deposition to produce functionalized doped diamond nanosensors and diamond-embedded microcircuitry, both central to achieving extreme conditions, probing electrical and magnetic properties of high-density materials and developing accurate metrology. In addition to using instrumentation in our laboratory and core research facilities at uOttawa, the proposed program will largely take advantage of synchrotron radiation facilities with national and international collaborators. Our proposed program and research environment, designed to be accessible and inclusive, will provide a highly motivating and comprehensive training for students and postdoctoral fellows.

拟议的极端压力和温度条件下的经典和量子材料物理学研究和 HQP 培训项目代表了当前项目和新研究举措的延续。该计划由四个主要的长期研究目标组成：(a) 揭示经典和量子材料中的新型致密相，这些材料在极端条件下可能表现出不寻常的物理性质，这是通过广泛使用金刚石砧细胞技术实现的 (b) 比较通过实验测量新型致密相材料的物理特性，并通过计算模拟特性来完善实验结果和计算模型 (c) 充分利用同步加速器辐射来探测致密材料 (d) 开发必要的创新实验方法、设备和纳米传感器探测凝聚态物质服从极端条件。 作为下一个资助期的短期目标，我们将（i）研究致密二维和准二维量子系统的物理性质，包括范德华插层材料，主要但不是唯一的重点是探索 BN 和极端条件下的 C 基固体。在这种情况下，使用极端温度和压力的目的是通过调整固态中的原子相互作用来引起光学/电子响应的变化，以实现电子和传感领域的潜在有用应用（ii）探索合成的条件由氮与元素和其他简单分子混合形成的新型二元化合物，利用压力诱导高密度的非常规键合 (iii) 对二元化合物形成的条件以及这些新型致密范德华固体的物理性质进行系统研究作为创新的固态储能系统和新型氮化物相具有不寻常的化学计量和不寻常的物理性质（iv）追求开发一种在极端条件下研究量子材料的新方法。即，使用基于飞秒激光的辐射源在高压下进行太赫兹时域光谱 (v) 通过化学气相沉积来生长具有受控杂质水平和晶体微结构的金刚石和类金刚石材料，以生产功能化掺杂金刚石纳米传感器和金刚石嵌入微电路，两者对于实现极端条件、探测高密度材料的电学和磁学特性以及开发精确计量学都至关重要。除了在渥太华大学的实验室和核心研究设施中使用仪器外，拟议的计划还将在很大程度上利用与国内和国际合作者的同步辐射设施。我们提议的项目和研究环境旨在方便和包容，将为学生和博士后提供高度激励和全面的培训。