Zobrazeno 1 - 10
of 277
pro vyhledávání: '"Zaffalon, M"'
We present a novel approach for estimating conditional probability tables, based on a joint, rather than independent, estimate of the conditional distributions belonging to the same table. We derive exact analytical expressions for the estimators and
Externí odkaz:
http://arxiv.org/abs/1708.06935
Autor:
Chung, Yunchul, Jo, Sanghyun, Chang, Dong-In, Lee, Hu-Jong, Zaffalon, M., Umansky, V., Heiblum, M.
Publikováno v:
Physical Review B 76, 035316 (2007)
A consistent approach in forming the 0.7 structure by using a quantum dot rather than a quantum point contact is demonstrated. With this scheme, it was possible to tune on and off the 0.7 structure. The 0.7 structure continuously evolved into a norma
Externí odkaz:
http://arxiv.org/abs/0806.1576
We report on noise measurements in a quantum dot in the presence of Kondo correlations. Close to the unitary limit, with the conductance reaching 1.8e2/h, we observed an average backscattered charge of e*~5e/3, while weakly biasing the quantum dot. T
Externí odkaz:
http://arxiv.org/abs/0711.4552
We report on the phase measurements on a quantum dot containing a single electron in the Kondo regime. Transport takes place through a single orbital state. Although the conductance is far from the unitary limit, we measure for the first time, a tran
Externí odkaz:
http://arxiv.org/abs/0711.1172
We study spin accumulation in an aluminium island, in which the injection of a spin current and the detection of the spin accumulation are done by means of four cobalt electrodes that connect to the island through transparent tunnel barriers. Althoug
Externí odkaz:
http://arxiv.org/abs/cond-mat/0606802
Autor:
Zaffalon, M., van Wees, B. J.
We experimentally study spin accumulation in an aluminium island with all dimensions smaller than the spin relaxation length, so that the spin imbalance throughout the island is uniform. Electrical injection and detection of the spin accumulation are
Externí odkaz:
http://arxiv.org/abs/cond-mat/0411407
Autor:
Zaffalon, M., van Wees, B. J.
Publikováno v:
Physical Review Letters 91, 186601 (2003)
We have measured electron spin accumulation at 4.2 K and at room temperature in an aluminium island with all dimensions (400nm x 400nm x 30nm) smaller than the spin relaxation length. For the first time, we obtain uniform spin accumulation in a four-
Externí odkaz:
http://arxiv.org/abs/cond-mat/0308395
Autor:
Kristensen, A., Lindelof, P. E., Jensen, J. B., Zaffalon, M., Hollingbery, J., Pedersen, S. W., Nygard, J., Bruus, H., Reimann, S. M., Michel, C. B. Sorensen M., Forchel, A.
Publikováno v:
Physica B 249-251, 180 (1998)
We present new results of the ``0.7'' 2(e^2)/h structure or quasi plateau in some of the most strongly confined point contacts so far reported. This strong confinement is obtained by a combination of shallow etching and metal gate deposition on modul
Externí odkaz:
http://arxiv.org/abs/cond-mat/9807277
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