Arakawa, Tomonori and Shiogai, Junichi and Ciorga, Mariusz and Utz, Martin and Schuh, Dieter and Kohda, Makoto and Nitta, Junsaku and Bougeard, Dominique and Weiss, Dieter and Ono, Teruo and Kobayashi, Kensuke (2015) Shot Noise Induced by Nonequilibrium Spin Accumulation. PHYSICAL REVIEW LETTERS, 114 (1): 016601. ISSN 0031-9007, 1079-7114
Full text not available from this repository. (Request a copy)Abstract
When an electric current passes across a potential barrier, the partition process of electrons at the barrier gives rise to the shot noise, reflecting the discrete nature of the electric charge. Here we report the observation of excess shot noise connected with a spin current which is induced by a nonequilibrium spin accumulation in an all-semiconductor lateral spin-valve device. We find that this excess shot noise is proportional to the spin current. Additionally, we determine quantitatively the spin-injection-induced electron temperature by measuring the current noise. Our experiments show that spin accumulation driven shot noise provides a novel means of investigating nonequilibrium spin transport.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | SCANNING-TUNNELING-MICROSCOPY; SPECTROSCOPY; CONDUCTORS; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Chair Professor Huber > Group Rupert Huber Physics > Institute of Experimental and Applied Physics > Chair Professor Huber > Group Dominique Bougeard Physics > Institute of Experimental and Applied Physics > Chair Professor Weiss > Group Dieter Weiss |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 25 Jul 2019 12:46 |
| Last Modified: | 25 Jul 2019 12:47 |
| URI: | https://pred.uni-regensburg.de/id/eprint/6111 |
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