دورية أكاديمية
Direct Measurement of the Spin-Orbit Interaction in a Two-Electron InAs Nanowire Quantum Dot
| العنوان: | Direct Measurement of the Spin-Orbit Interaction in a Two-Electron InAs Nanowire Quantum Dot |
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| المؤلفون: | Fasth, Carina, Fuhrer, Andreas, Samuelson, Lars, Golovach, Vitaly, Loss, Daniel |
| المصدر: | Physical Review Letters; 98, pp 1-266801 (2007) ; ISSN: 1079-7114 |
| بيانات النشر: | American Physical Society |
| سنة النشر: | 2007 |
| المجموعة: | Lund University Publications (LUP) |
| مصطلحات موضوعية: | Condensed Matter Physics |
| الوصف: | We demonstrate control of the electron number down to the last electron in tunable few-electron quantum dots defined in catalytically grown InAs nanowires. Using low temperature transport spectroscopy in the Coulomb blockade regime, we propose a method to directly determine the magnitude of the spin-orbit interaction in a two-electron artificial atom with strong spin-orbit coupling. Because of a large effective g factor |g*|=8±1, the transition from a singlet S to a triplet T+ ground state with increasing magnetic field is dominated by the Zeeman energy rather than by orbital effects. We find that the spin-orbit coupling mixes the T+ and S states and thus induces an avoided crossing with magnitude ΔSO=0.25±0.05 meV. This allows us to calculate the spin-orbit length λSO≈127 nm in such systems using a simple model. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| العلاقة: | https://lup.lub.lu.se/record/642631Test; http://dx.doi.org/10.1103/PhysRevLett.98.266801Test; wos:000247625100048; scopus:34547342695; pmid:17678116 |
| DOI: | 10.1103/PhysRevLett.98.266801 |
| الإتاحة: | https://doi.org/10.1103/PhysRevLett.98.266801Test https://lup.lub.lu.se/record/642631Test |
| رقم الانضمام: | edsbas.B2182A35 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1103/PhysRevLett.98.266801 |
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