Regensburg 2022 – scientific programme
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O: Fachverband Oberflächenphysik
O 18: Poster Monday: 2D Materials 1
O 18.19: Poster
Monday, September 5, 2022, 18:00–20:00, P4
Electron-stimulated photon emission on TMD defects — •Lysander Huberich1, Jonas Allerbeck1, Feifei Xiang1, Riccardo Torsi2, Anne Marie Tan3, Pascal Ruffieux1, Roman Fasel1, Oliver Gröning1, Richard Hennig3, Yu-Chuan Lin2, Joshua Robinson2, and Bruno Schuler1 — 1Empa - Swiss Federal Laboratories for Materials Science and Technology, Switzerland — 2Department of Materials Science and Engineering, The Pennsylvania State University, University Park, USA — 3Department of Materials Science and Engineering, University of Florida, USA
Due to their exceptionally long electron spin coherence and spin-selective optical readout nitrogen-vacancy centers in diamond are considered a key building block in quantum sensing and quantum-cryptography applications. However, defects in bulk materials suffer from limited tunability and placement control, poor photon extraction efficiency, and coherence degradation close to the surface. 2D materials such as monolayer transitional metal dichalcogenides (TMDs) are expected to overcome these challenges while offering new synthetic strategies for the bottom-up design of solid-state defects. Here we present an NV− center analog in 2D; the dopant vacancy complex (ReMo + VacS)− in MoS2. We investigate its electronic states using scanning tunneling spectroscopy and present atomically-resolved photon emission maps of single TMD defects by means of STM luminescence.