A method for mechanical generation of radio frequency fields in nuclear magnetic resonance force microscopy

TL;DR

This paper introduces a novel MRFM technique that uses the mechanical detector's higher modes as RF sources, enabling low-dissipation NMR experiments at ultra-low temperatures without on-chip RF sources.

Contribution

The paper presents a new method for generating RF fields in MRFM using mechanical modes, eliminating the need for on-chip RF sources and reducing dissipation at low temperatures.

Findings

Enables MRFM without close RF source proximity

Allows NMR at ultra-low temperatures with minimal dissipation

Potential for broader application in condensed matter physics

Abstract

We present an innovative method for magnetic resonance force microscopy (MRFM) with ultra-low dissipation, by using the higher modes of the mechanical detector as radio frequency (rf) source. This method allows MRFM on samples without the need to be close to an rf source. Furthermore, since rf sources require currents that give dissipation, our method enables nuclear magnetic resonance experiments at ultra-low temperatures. Removing the need for an on-chip rf source is an important step towards a MRFM which can be widely used in condensed matter physics.