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Longitudinal and transverse exciton spin relaxation times in single InP/InAsP/InP nanowire quantum dots

Autor: Sasakura, H., Hermannstädter, C., Dorenbos, S. N., Akopian, N., van Kouwen, M. P., Motohisa, J., Kobayashi, Y., Kumano, H., Kondo, K., Tomioka, K., Fukui, T., Suemune, I., Zwiller, V.

Publikováno v: Physical Review B 85, 075324/1-7 (2012)

We have investigated the optical properties of a single InAsP quantum dot embedded in a standing InP nanowire. A regular array of nanowires was fabricated by epitaxial growth and electron-beam patterning. The elongation of transverse exciton spin rel

Externí odkaz: http://arxiv.org/abs/1109.6419

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Time- and Spectrally-Resolved PL Study of a Regular Array of InP/InAs/InP Core-multishell Nanowires

Autor: Pal, B., Goto, K., Ikezawa, M., Masumoto, Y., Mohan, P., Motohisa, J., Fukui, T.

Time- and spectrally-resolved PL from a periodic array of InP/InAs/InP core-multishell nanowires is presented. InAs layer shows multipeak PL spectra. PL decay is nonexponential and very slow, with decay rate depending on energy.
Comment: 2 pages

Externí odkaz: http://arxiv.org/abs/cond-mat/0702127

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Two-stage Kondo effect in a quantum dot at high magnetic field

Autor: van der Wiel, W. G., De Franceschi, S., Elzerman, J. M., Tarucha, S., Kouwenhoven, L. P., Motohisa, J., Nakajima, F., Fukui, T.

Publikováno v: Phys. Rev. Lett. 88, 126803 (2002).

We report a strong Kondo effect (Kondo temperature ~ 4K) at high magnetic field in a selective area growth semiconductor quantum dot. The Kondo effect is ascribed to a singlet-triplet transition in the ground state of the dot. At the transition, the

Externí odkaz: http://arxiv.org/abs/cond-mat/0110432

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