Measuring the state of a single-molecule magnet with a microstrip resonator

Thomas Fan, Vladimir I. Tsifrinovich, Andrew D. Kent

    Research output: Contribution to journalArticle


    In this work, measurement of the single-molecule magnet (SMM) spin state using a microstrip resonator is considered theoretically. An analysis of the SMM spin dynamics and the interaction between the microstrip and the SMM is presented. The interaction of the SMM with the microstrip causes a shift of the microstrip resonance frequency. An analytic expression for the maximum frequency shift is derived. For a spin-4 SMM Ni4, the maximum possible relative frequency shift is estimated to be 3.2×10-5 for the excited state and 5.8×10-5 for the ground state. The numerical analysis shows the hysteresis behavior of the resonator frequency. Two methods for measuring the spin state of the SMM with a microstrip resonator are proposed. One method is based on the sign of the frequency shift. The other one utilizes the hysteresis behavior of the resonator frequency.

    Original languageEnglish (US)
    Article number024410
    JournalPhysical Review B - Condensed Matter and Materials Physics
    Issue number2
    StatePublished - Jul 7 2011


    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics

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