Coordination Funds

在低维电子气中通过邻近耦合诱导关联效应是设计具有定制的电子、磁性和光学性质的新量子材料的有力概念。在本研究单元中，以SiC衬底上的外延石墨烯（EG）为例，研究了自旋轨道相互作用、电子相关性以及2D电子气系统的局部电场的邻近效应。外延石墨烯（EG）类似于真正的2D电子系统，并且以其在其真空和界面位置处的多种和灵活的功能化方案的能力而闻名，例如通过电荷转移、极化掺杂、用高Z材料封装以及重构和超晶格的形成。EG中从线性带到平坦带的受控过渡以及功能化EG与2D电子气在界面处的耦合将打开用于定制2D材料中的电子相关效应和介观现象的走廊，例如超导性，自旋和电荷密度波，Mott状态，新的磁相以及QHE和Klein隧穿。在这个研究单位，所有相关领域的增长，原子结构，电子结构和运输，以及理论建模的接口和原子的过程都涵盖了专业知识的PI在这个财团。

Inducing correlation effects in low dimensional electron gases by proximity coupling is a powerful concept for the design of new quantum materials with tailored electronic, magnetic and optical properties. In this Research Unit the proximity effect of spin-orbit interaction, electronic correlations as well as local electric fields with 2D electron gas systems is investigated using the example of epitaxial graphene (EG) on SiC substrates. Epitaxial graphene (EG) resembles a truly 2D electron system and is known for its ability of manifold and flexible functionalization schemes at its vacuum and interface site, e.g. by charge transfer, polarization doping, encapsulation with high-Z materials as well as formation of reconstructions and superlattices. The controlled transition from linear to flat bands in EG as well as the coupling of functionalized EG to 2D electron gases at the interface will open the corridor for tailoring electronic correlation effects and mesoscopic phenomena in 2D materials, e.g. superconductivity, spin and charge density waves, Mott states, new magnetic phases as well as QHE and Klein tunneling. Within this Research Unit, all relevant fields of growth, atomic structure, electronic structure and transport as well as the theoretical modeling of the interfaces and atomistic processes are covered by the expertise of the PIs within this consortium.