Presentation Information
[1P25]Development of electron spin resonance scanning tunneling microscope with a new microwave irradiation system.
*Riku Kishimoto1, Hiroki Maekawa1, Erlina Tik Man1, Kazutoshi Shimamura2, Toshu An3, Keisuke Yamada4, Yasuo Yoshida1 (1. Department of physics, Kanazawa University, 2. Engineering and Technology Department, Kanazawa University, 3. School of Materials Science, Japan Advanced Institute of Science and Technology, 4. Faculty of Engineering, Gifu University)
Electron Spin Resonance combined with spin-polarized scanning tunneling microscopy (ESR-STM) enables direct observation of individual atomic and molecular spins, detecting spin resonance signals via microwave modulation of the tunneling current and determining parameters such as the g-factor, spin states, and local magnetic environment. Conventional ESR-STM often applies an oscillating magnetic field through insulating films like sodium chloride or magnesium oxide, restricting measurements to atoms or molecules on these films. We have developed a versatile ESR-STM that applies the oscillating magnetic field directly to the sample without insulating films, using a sample holder with a new microwave transmission path and irradiation mechanism. We confirm reasonable microwave transmission to the sample holder through microwave transmission measurements and detection of ferromagnetic resonance signals.