J. R. Petta, D. C. Ralph
Published 2002-06-22Version 1
We have measured the full angular dependence, as a function of the direction of magnetic field, for the Zeeman splitting of individual energy states in copper nanoparticles. The g-factors for spin splitting are highly anisotropic, with angular variations as large as a factor of five. The angular dependence fits well to ellipsoids. Both the principal-axis directions and g-factor magnitudes vary between different energy levels within one nanoparticle. The variations agree quantitatively with random-matrix theory predictions which incorporate spin-orbit coupling.
Comments: 4 pages, 3 figures, 2 in color
Journal: Phys. Rev. Lett. 89, 156802 (2002)
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