Control of the inhomogeneity degree by magnetic dilution in crystals of antiferromagnetic molecular rings

    Authors

    J. J. Henderson; C. M. Ramsey; E. del Barco; T. C. Stamatatos;G. Christou

    Comments

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    Abstract

    Employing the electron spin in solid-state qubits is considered a promising method for quantum information processing. In this context, we present a microwave spectroscopic study on magnetically dilute crystals of Fe-18 antiferromagnetic molecular rings. Doping with Ga3+, at concentrations ranging from 0.5% down to 0.005%, results in magnetic Fe17Ga (S=5/2) molecules dispersed throughout the lattice, with 2-8 nm average intermolecular separation. The results reveal a significant decrease in the degree of inhomogeneity of the system, hinting at a controlled reduction in decoherence mechanisms inherent to an ensemble of anisotropic molecular magnets while maintaining the crystalline order.

    Journal Title

    Physical Review B

    Volume

    78

    Issue/Number

    21

    Publication Date

    1-1-2008

    Document Type

    Article

    WOS Identifier

    WOS:000262244400058

    ISSN

    1098-0121

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