|Speaker||Prof. Andreas Heinrich|
|Date||Thu. 11 May. 2017|
|Venue||#633, Asan Hall, College of Science|
“Electron Spin Resonance of single atoms on a surface”
The scanning tunneling microscope is an amazing experimental tool because of its atomic-scale spatial resolution. This can be combined with the use of low temperatures, culminating in precise atom manipulation and spectroscopy with microvolt energy resolution. In this talk I will apply these techniques to the investigation of the quantum spin properties of transition metal atoms on surfaces. We will conclude with our recent measurements of electron spin resonance in an STM on individual Fe atoms supported on an insulating thin film, offering unprecedented energy resolution on the atomic scale. This tool can be used as an ESR sensor to measure the magnetic field (dipolar interaction) from neighboring atoms, enabling the high-precision measurement of the magnetic moment of individual atoms on surfaces.
Prof. Andreas Heinrich
IBS Research, Center for Quantum Nanoscience, Seoul, South Korea
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