Single-atom electron paramagnetic resonance in a scanning tunneling microscope driven by a radio-frequency antenna at 4 K
Tom S. Seifert, Štěpán Kovařík, Corneliu Nistor, Luca Persichetti, Sebastian Stepanow, Pietro Gambardella
Abstract
Combining the sub-atomic resolution of a scanning tunneling microscope (STM) with the spectral resolution of electron-paramagnetic resonance (EPR) allows for probing magnetic interactions of single atoms on a surface with unprecedented sensitivity. Here, the authors use an RF antenna close to the tunnel junction of the STM to drive efficiently EPR of hydrogenated Ti atoms at temperatures of up to 5 K.
Topics & Concepts
Electron paramagnetic resonanceScanning tunneling microscopeMicrowavePulsed EPRExcitationSpin polarized scanning tunneling microscopyCoupling (piping)Resonance (particle physics)Scanning tunneling spectroscopyAntenna (radio)Materials scienceAtomic physicsNuclear magnetic resonanceChemistryPhysicsSpin echoMagnetic resonance imagingNanotechnologyElectrical engineeringMedicineQuantum mechanicsRadiologyMetallurgyEngineeringMolecular Junctions and NanostructuresQuantum and electron transport phenomenaMechanical and Optical Resonators