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Author Brown, Richard M. ♦ Ito, Yasuhiro ♦ Warner, Jamie ♦ Ardavan, Arzhang ♦ Shinohara, Hisanori ♦ Briggs, G. Andrew D. ♦ Morton, John J. L.
Source arXiv.org
Content type Text
File Format PDF
Date of Submission 2010-02-05
Language English
Subject Domain (in DDC) Computer science, information & general works ♦ Natural sciences & mathematics ♦ Physics
Subject Keyword Condensed Matter - Materials Science ♦ Quantum Physics ♦ physics:cond-mat ♦ physics:quant-ph
Abstract Endohedral fullerenes encapsulating a spin-active atom or ion within a carbon cage offer a route to self-assembled arrays such as spin chains. In the case of metallofullerenes the charge transfer between the atom and the fullerene cage has been thought to limit the electron spin phase coherence time (T2) to the order of a few microseconds. We study electron spin relaxation in several species of metallofullerene as a function of temperature and solvent environment, yielding a maximum T2 in deuterated o-terphenyl greater than 200 microseconds for Y, Sc and La@C82. The mechanisms governing relaxation (T1, T2) arise from metal-cage vibrational modes, spin-orbit coupling and the nuclear spin environment. The T2 times are over 2 orders of magnitude longer than previously reported and consequently make metallofullerenes of interest in areas such as spin-labelling, spintronics and quantum computing.
Educational Use Research
Learning Resource Type Article
Page Count 5


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