Magnetic-field dependence of energy levels in ultrasmall metal grains

Abstract

We present a theory of mesoscopic fluctuations of g tensors and avoided crossing energies in a small metal grain. The model, based on random matrix theory, contains both the orbital and spin contributions to the g tensor. The two contributions can be experimentally separated for weak spin-orbit coupling while they merge in the strong coupling limit. For intermediate coupling, substantial correlations are found between g factors of neighboring levels.

9 pages, 5 figures

References in corpus (3)

• Studies of spin-orbit scattering in noble-metal nanoparticles using energy level tunneling spectroscopy
• Measurements of strongly-anisotropic g-factors for spins in single quantum states
• Enhanced mesoscopic fluctuations in the crossover between random matrix ensembles

Cited by in corpus (15)

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• Orbital and spin contributions to the $g$-tensors in metal nanoparticles
• Magnetic-field symmetries of mesoscopic nonlinear conductance
• Semiclassical Approach to Parametric Spectral Correlation with Spin 1/2
• Spatial correlations in chaotic nanoscale systems with spin-orbit coupling
• g-Factors and Discrete Energy Level Velocities in Nanoparticles
• Modelling Electron Spin Accumulation in a Metallic Nanoparticle
• Mesoscopic magnetoelectric effect in chaotic quantum dots
• Chaotic Transport in the Symmetry Crossover Regime with a Spin-orbit Interaction
• Magnetic response of energy levels of superconducting nanoparticles with spin-orbit scattering
• Level dynamics and avoided level crossings in driven disordered quantum dots
• Spin-orbit scattering in superconducting nanoparticles