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Random Spin Signal in Magnetic Resonance Force Microscopy

G. P. Berman·V. N. Gorshkov·V. I. Tsifrinovich
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Abstract

We study a random magnetic resonance force microscopy (MRFM) signal caused by the thermal vibrations of high frequency cantilever modes in the oscillating cantilever-driven adiabatic reversals (OSCAR) technique. We show that the regular MRFM signal with a characteristic decay time, $τ_m$, is followed by a non-dissipative random signal with a characteristic time $τ_r$. We present the estimates for the values of $τ_m$ and $τ_r$. We argue that this random MRFM signal can be used for spin detection. It has a ``signature'' of a sharp peak in its Fourier spectrum.

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G. P. Berman, V. N. Gorshkov, V. I. Tsifrinovich. 2003-06-11. Random Spin Signal in Magnetic Resonance Force Microscopy. https://doi.org/10.1016/j.physleta.2003.09.055

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