Measurements of strongly-anisotropic g-factors for spins in single quantum states

Details Measurements of strongly-anisotropic g-factors for spins in single quantum states Measurements of strongly-anisotropic g-factors for spins in single quantum states

2002-06-22

arxiv.org/abs/cond-mat/0206423v1

Phys. Rev. Lett. 89, 156802 (2002)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures, 2 in color

Scientific paper

10.1103/PhysRevLett.89.156802

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.

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