Singlet-triplet transition in a few-electron lateral InGaAs-InAlAs quantum dot - Condensed Matter > Mesoscale and Nanoscale PhysicsReportar como inadecuado




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Abstract: The magnetic-field evolution of Coulomb blockade peaks in lateralInGaAs-InAlAs quantum dots in the few-electron regime is reported. Quantum dotsare defined by gates evaporated onto a 60 nm-thick hydrogen silsesquioxaneinsulating film. A gyromagnetic factor of 4.4 is measured via zero-bias spinspectroscopy and a transition from singlet to triplet spin configuration isfound at an in-plane magnetic field B = 0.7 T. This observation opens the wayto the manipulation of singlet and triplet states at moderate fields and itsrelevance for quantum information applications will be discussed.



Autor: F. Deon, V. Pellegrini, F. Carillo, F. Giazotto, L.Sorba, G. Biasiol, F. Beltram

Fuente: https://arxiv.org/



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