Magnetic resonance force microscopy with matching frequencies of cantilever and spin

Single Spin Magnetic Resonance Force Microscopy

Magnetic Resonance Force Microscopy Cantilever Detection by Quantum Tunneling

Magnetic resonance force microscopy (MRFM) is a novel ultra-sensitive magnetic resonance detection scheme. In this scheme, forces are measured between a magnet-tipped cantilever and on-resonance spins. It has been proposed that this technique could be used to image biomolecules [1]. In order to increase the sensitivity of MRFM, it may become necessary to use radio-frequency (RF), rather than au...

Quantum Dynamics of the Oscillating Cantilever-Driven Adiabatic Reversals in Magnetic Resonance Force Microscopy

We simulated the quantum dynamics for magnetic resonance force microscopy (MRFM) in the oscillating cantilever-driven adiabatic reversals (OSCAR) technique. We estimated the frequency shift of the cantilever vibrations and demonstrated that this shift causes the formation of a Schrödinger cat state which has some similarities and differences from the conventional MRFM technique which uses cycli...

Sensitivity and spatial resolution for electron-spin-resonance detection by magnetic resonance force microscopy

The signal intensity of electron spin resonance in magnetic resonance force microscopy ~MRFM! experiments employing periodic saturation of the electron spin magnetization is determined by four parameters: the rf field H1 , the modulation level of the bias field Hm , the spin relaxation time t1 , and the magnetic size R(]H/]z) of the sample. Calculations of the MRFM spectra obtained from a 2,2-d...

Spin Lifetime in Small Electron Spin Ensembles Measured by Magnetic Resonance Force Microscopy

Magnetic Resonance Force Microscopy can enable nanoscale imaging of spin lifetime. We report temperature dependent measurements of the spin correlation time τm of the statistical fluctuations of the spin polarization—the spin noise—of ensembles containing ∼ 100 electron spins by this technique. Magneto-mechanical relaxation due to spin-cantilever coupling was controlled and spurious mechanisms ...