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O: Fachverband Oberflächenphysik
O 87: Poster Session - Nanostructures at Surfaces: 1D and 2D Structures and Networks
O 87.1: Poster
Mittwoch, 18. März 2020, 18:15–20:00, P2/1OG
Confinement and Tailoring of Surface 2DEGs in Temperature-driven Molecular Nano-porous Network — •Lu Lyu1, Benito Arnoldi1, Jin Xiao2, Sina Mousavion1, Johannes Stöckl1, Maniraj Mahalingam1, Benjamin Stadtmüller1,3, and Martin Aeschlimann1 — 1Department of Physics and Research Center OPTIMAS, TU Kaiserslautern — 2School of Science, Hunan University of Technology, Zhuzhou 412007, China — 3Graduate School Materials Science in Mainz, Kaiserslautern
Controlling the quantum confinement of (spin-dependent) electronic states by design of two-dimensional (2D) organic nanoporous networks (NPNs) opens a unique avenue to accelerate the implementation of quantum technology in next-generation photonic and spintronic applications. In our previous study [1], a thermal-driven TPT NPN is found on Cu(111) surface. At low temperature, the formation of nanopores can confine the free 2D electron gas (2DEGs) of the surface into a regular array of quantum dots. Moreover, the electronic coupling between neighboring quantum dots induces a dispersive band structure in k-space near the Fermi level. Further, the confined 2DEGs can be modulated by the doped cobalt atoms. Combining the DFT and EBEM/EPWE (electron boundary elements and electron plane wave expansion methods), the details on spin-dependent electronic states are provided in Co-doped NPN. These findings pave the way to control 2DEGs in temperature-driven molecular networks.
[1] J. Phys. Chem. C 123, 26263 (2019)