Details
| Original language | English |
|---|---|
| Article number | L121404 |
| Number of pages | 6 |
| Journal | Physical Review B |
| Volume | 109 |
| Issue number | 12 |
| Publication status | Published - 15 Mar 2024 |
Abstract
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.
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Condensed Matter Physics
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In: Physical Review B, Vol. 109, No. 12, L121404, 15.03.2024.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Direct measurement of spin-flip rates of a self-assembled InAs double quantum dot in single-electron tunneling
AU - Dani, Olfa
AU - Hussein, Robert
AU - Bayer, Johannes C.
AU - Pierz, Klaus
AU - Kohler, Sigmund
AU - Haug, Rolf J.
N1 - Funding Information: Acknowledgment. This work was supported by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany's Excellence Strategy – EXC 2123 QuantumFrontiers – 390837967, the State of Lower Saxony of Germany via the Hannover School for Nanotechnology, and by the Spanish Ministry of Science, Innovation, and Universities (Grant No. PID2020-117787GB-I00), and by the CSIC Research Platform on Quantum Technologies PTI-001.
PY - 2024/3/15
Y1 - 2024/3/15
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85187955375&partnerID=8YFLogxK
U2 - 10.48550/arXiv.2310.11259
DO - 10.48550/arXiv.2310.11259
M3 - Article
AN - SCOPUS:85187955375
VL - 109
JO - Physical Review B
JF - Physical Review B
SN - 2469-9950
IS - 12
M1 - L121404
ER -