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Journals and Conferences
The spin Seebeck effect refers to the generation of spin voltage as a result of a temperature gradient in ferromagnetic or ferrimagnetic materials. When a conductor is attached to a magnet under a temperature gradient, the thermally generated spin voltage in the magnet injects a spin current into the conductor, which in turn produces electric voltage owing… (More)
Dynamical behaviors of the exciton and biexciton luminescence at the wavelength of 1.18 μm from an InAs/GaAs single quantum dot are studied at 4.3 K. The rate equation analysis on the luminescence decays shows that the biexciton lifetime is longer than the exciton lifetime. The estimated lifetimes reflect molecular nature of the biexciton in the single… (More)
In this study, we investigated the optical characteristics of single charge-tunable InAs QDs emitting at 1.2 μm, whose size is about twice those discussed in the previous reports. For probing electronic shell structures, large QDs are favorable in terms of deep confinement potentials and weak Coulomb interaction.