Direct measurement of spin-flip rates in single-electron tunneling
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arXiv
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| Hauptverfasser: | , , , , , |
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| Format: | Preprint |
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2023
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| _version_ | 1866907832122605568 |
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| author | Dani, Olfa Hussein, Robert Bayer, Johannes C. Pierz, Klaus Kohler, Sigmund Haug, Rolf J. |
| author_facet | Dani, Olfa Hussein, Robert Bayer, Johannes C. Pierz, Klaus Kohler, Sigmund Haug, Rolf J. |
| contents | Spin-flips are one of the limiting factors for spin-based information processing. We demonstrate a transport approach for determining the spin-flip rates of a self-assembled InAs double quantum dot occupied by a single electron. In such devices, different Landé factors lead to an inhomogeneous Zeeman splitting, so that the two spin channels can never be at resonance simultaneously, leading to a spin blockade at low temperatures. This blockade is analyzed in terms of spin flips for different temperatures and magnetic fields. Our results are in good agreement with a quantum master equation that combines the dot-lead couplings with ohmic dissipation stemming from spin-flip cotunneling. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2310_11259 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Direct measurement of spin-flip rates in single-electron tunneling Dani, Olfa Hussein, Robert Bayer, Johannes C. Pierz, Klaus Kohler, Sigmund Haug, Rolf J. Mesoscale and Nanoscale Physics Spin-flips are one of the limiting factors for spin-based information processing. We demonstrate a transport approach for determining the spin-flip rates of a self-assembled InAs double quantum dot occupied by a single electron. In such devices, different Landé factors lead to an inhomogeneous Zeeman splitting, so that the two spin channels can never be at resonance simultaneously, leading to a spin blockade at low temperatures. This blockade is analyzed in terms of spin flips for different temperatures and magnetic fields. Our results are in good agreement with a quantum master equation that combines the dot-lead couplings with ohmic dissipation stemming from spin-flip cotunneling. |
| title | Direct measurement of spin-flip rates in single-electron tunneling |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2310.11259 |