Coordination Funds

协调基金

• 批准号: 444137888
• 负责人: Professor Dr. Thomas Heine
• 金额: --
• 依托单位: Professur für Theoretische Chemie
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/444137888?language=en
• 关键词: Coordination; Funds

Two-dimensional (2D) materials are crystals with a thickness of only one or very few atoms. After the discovery of graphene, the most prominent representative of this class of materials, many other 2D crystals have been identified. They often exhibit intriguing properties that have no counterpart in three-dimensional solids. Furthermore, well-defined stacking of 2D crystals can lead to new states of matter, even when the individual layers are only weakly bound by van der Waals (vdW) interactions. The most impressive example published in 2018 is the transformation of bilayer graphene into a superconductor when the layers are twisted by a "magic angle" of about 1.1 degrees. Such delicate structural manipulation has become possible thanks to massive research efforts in 2D materials, opening the door to the study of phase transitions forced by the so-called proximity effect. For example, phase transitions between a Mott insulator and an unconventional superconducting state to a 2D ferromagnetic phase or semiconductor-metal transitions have been observed. In addition, vdW heterostructures offer rich optical and optoelectronic properties, such as interlayer excitons and trions. The combination of 2D crystals with different properties, e.g., a 2D superconductor and a 2D topological insulator, can open the door to exotic physical phenomena such as Majorana fermions. The goal of Priority Program 2244 "2D Materials: Physics of vdW [Hetero]Structures" is to combine research efforts and expertise in the German scientific community to address the many open fundamental questions about stacked 2D materials. PP 2244 has the following three goals: Aim 1: Investigate the effects of interlayer interactions on electronic and transport properties in 2D vdW materials. Aim 2: Investigate the optical properties resulting from interlayer interactions in 2D vdW materials. Aim 3: Investigate collective and correlated phenomena leading to exotic effects in 2D vdW materials. To ensure a close collaboration, PP 2244 is accompanied by a coordination office. This office will take care of the organization of summer schools for PhD students and postdocs, training events, gender equality activities and scientific workshops for all members and associated members of the focus. Furthermore, a program for doctoral student exchange between the participating projects as well as start-up funding for young scientists is offered. The scientific work of PP 2244 is accompanied by a steering committee.

二维（2D）材料是厚度仅为一个或非常少的原子的晶体。在这类材料中最突出的代表石墨烯被发现之后，许多其他2D晶体也被发现。它们通常表现出在三维固体中没有对应物的有趣特性。此外，二维晶体的良好定义堆叠可以导致新的物质状态，即使各个层仅被货车德瓦尔斯（vdW）相互作用弱结合。2018年发表的最令人印象深刻的例子是，当双层石墨烯以约1.1度的“魔角”扭曲时，它们转变为超导体。由于在2D材料方面的大量研究工作，这种微妙的结构操纵已经成为可能，为研究所谓的邻近效应所迫使的相变打开了大门。例如，已经观察到莫特绝缘体和非常规超导状态之间的相变到2D铁磁相或超导体-金属相变。此外，vdW异质结构提供了丰富的光学和光电特性，如层间激子和三重离子。具有不同性质的2D晶体的组合，例如，二维超导体和二维拓扑绝缘体，可以打开大门，外来的物理现象，如马约拉纳费米子。优先计划2244“2D材料：vdW [Heavy]结构的物理学”的目标是将德国科学界的联合收割机研究工作和专业知识结合起来，以解决有关堆叠2D材料的许多开放的基本问题。PP 2244有以下三个目标：目的1：研究层间相互作用对二维vdW材料电子和输运性质的影响。目的2：研究二维vdW材料中层间相互作用引起的光学性质。目的3：研究集体和相关的现象，导致奇异效应的二维vdW材料。为了确保密切合作，PP 2244配备了一个协调办公室。该办公室将负责组织博士生和博士后暑期学校、培训活动、性别平等活动以及为中心所有成员和联系成员举办的科学讲习班。此外，还提供了参与项目之间的博士生交流计划以及青年科学家的启动资金。PP 2244的科学工作由一个指导委员会陪同。