Entrapment of magnetic micro-crystals for on-chip electron spin resonance studies

Abstract

On-chip Electron Spin Resonance (ESR) of magnetic molecules requires the ability to precisely position nanosized samples in antinodes of the electro-magnetic field for maximal magnetic interaction. A method is developed to entrap micro-crystals containing spins in a well defined location on a substrate's surface. Traditional cavity ESR measurements are then performed on a mesoscopic crystal at 34 GHz. Polycrystalline diluted Cr${}^{5+}$ spins were entrapped as well and measured while approaching the lower limit of the ESR sensitivity. This method suggests the feasibility of on-chip ESR measurements at dilution refrigerator temperatures by enabling the positioning of samples atop an on-chip superconducting cavity.

to appear in Journal of Applied Physics

References in corpus (5)

• Will spin-relaxation times in molecular magnets permit quantum information processing?
• Coherent Manipulation and Decoherence of S=10 Single-Molecule Magnets
• Multiphoton coherent manipulation in large-spin qubits
• Coherent manipulation of electron spins up to ambient temperatures in Cr${}^{5+}$(S=1/2) doped K${}_3$NbO${}_8$
• Electron Spin Relaxation and 39K Pulsed ENDOR Studies on Cr5+ doped K3NbO8 at 9.7 and 240 GHz

Cited by in corpus (1)

• Magnetic strong coupling in a spin-photon system and transition to classical regime