Magnetic Resonance Force Microscopy with Overlapping Frequencies of Cantilever and Spin

TL;DR

This paper theoretically explores a high-frequency MRFM setup where the cantilever's frequency matches a single electron spin's resonance, potentially enabling faster and more sensitive spin detection than current methods.

Contribution

It introduces a novel theoretical approach for MRFM with overlapping frequencies, suggesting significant improvements in single-spin detection sensitivity.

Findings

Frequency shift can be much larger than previous experimental records.

Potential for rapid detection of single electron and nuclear spins.

Theoretical estimations indicate feasibility of experimental realization.

Abstract

We have studied theoretically magnetic resonance force microscopy (MRFM) with a high frequency nanomechanical cantilever when the cantilever frequency matches the resonant frequency of a single electron spin. Our estimations show that in this scenario the relative frequency shift of the cantilever can be much greater than the record MRFM frequency shift achieved in experiments with a single spin detection. Experimental realization of our proposal could open the way for fast detection of a single electron spin and even for detection of a single nuclear spin.