Spin States in Graphene Quantum Dots
arXiv:1002.3771 · doi:10.1103/PhysRevLett.105.116801
Abstract
We investigate ground and excited state transport through small (d = 70 nm) graphene quantum dots. The successive spin filling of orbital states is detected by measuring the ground state energy as a function of a magnetic field. For a magnetic field in-plane of the quantum dot the Zemann splitting of spin states is measured. The results are compatible with a g-factor of 2 and we detect a spin-filling sequence for a series of states which is reasonable given the strength of exchange interaction effects expected for graphene.
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- Mass-profile quantum dots in graphene
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- Disorder and Interactions in Graphene and other Quantum Systems