SKM 2023 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 21: Poster: Scanning Probe Techniques
O 21.7: Poster
Montag, 27. März 2023, 18:00–20:00, P2/EG
Electric field control of spin transitions in a dimer system using ESR-STM — •Maneesha Ismail1, Piotr Kot2, Janis Siebrecht1, Haonan Huang1, and Christan R. Ast1 — 1Max-Planck-Institute for Solid State Research, Heisenbergstr. 1, 70569 Stuttgart, Germany — 2Center for Quantum Nanoscience, Institute for Basic Science, Seoul 03760, Republic of Korea
Since the demonstration of the control of spins on the atomic scale, the technique of ESR-STM has been used extensively to explore the field of spintronics. Here, we present a new approach to ESR-STM which uses the bias voltage as a parameter to tune the energy of the Zeeman transition. We demonstrate electronic control of spin resonance transitions in a single molecule. We could observe a strong dependency of the g-factor and tip-field shift on the electric field. Finally, we demonstrate an avoided crossing in the energy levels of a dimer as a function of bias voltage, which corresponds to an entangled state. This could be an important step towards quantum computations as they rely on entanglement opening a more coherent and easier method of electronic spin control.