Magnetic field sensing using a driven double quantum dot
A microwave-driven double dot system is investigated as a detector for probing a magnetic field gradient. The two dots are connected to metallic leads and a source-drain current flows under microwave irradiation. The induced current as a function of the external magnetic field exhibits resonance eff...
| Κύριοι συγγραφείς: | , , , , |
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| Μορφή: | Journal article |
| Γλώσσα: | English |
| Έκδοση: |
Elsevier
2010
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| Θέματα: |
| _version_ | 1826263335675363328 |
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| author | Giavaras, G Wabnig, J Lovett, B Jefferson, J Briggs, G |
| author_facet | Giavaras, G Wabnig, J Lovett, B Jefferson, J Briggs, G |
| author_sort | Giavaras, G |
| collection | OXFORD |
| description | A microwave-driven double dot system is investigated as a detector for probing a magnetic field gradient. The two dots are connected to metallic leads and a source-drain current flows under microwave irradiation. The induced current as a function of the external magnetic field exhibits resonance effects that depend directly on the local field gradient and any difference in the g-factors between the dots. The properties of the dot detector with respect to temperature, interdot hopping and the magnitude of the field gradient are examined. We demonstrate that the main factor limiting sensitivity is spin relaxation and discuss the issues in applying the method to single spin detection. |
| first_indexed | 2024-03-06T19:50:08Z |
| format | Journal article |
| id | oxford-uuid:23af3b48-d5a0-4941-9df4-09c6ecd3260e |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T19:50:08Z |
| publishDate | 2010 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:23af3b48-d5a0-4941-9df4-09c6ecd3260e2022-03-26T11:45:38ZMagnetic field sensing using a driven double quantum dotJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:23af3b48-d5a0-4941-9df4-09c6ecd3260eMaterials SciencesPhysicsEnglishOxford University Research Archive - ValetElsevier2010Giavaras, GWabnig, JLovett, BJefferson, JBriggs, GA microwave-driven double dot system is investigated as a detector for probing a magnetic field gradient. The two dots are connected to metallic leads and a source-drain current flows under microwave irradiation. The induced current as a function of the external magnetic field exhibits resonance effects that depend directly on the local field gradient and any difference in the g-factors between the dots. The properties of the dot detector with respect to temperature, interdot hopping and the magnitude of the field gradient are examined. We demonstrate that the main factor limiting sensitivity is spin relaxation and discuss the issues in applying the method to single spin detection. |
| spellingShingle | Materials Sciences Physics Giavaras, G Wabnig, J Lovett, B Jefferson, J Briggs, G Magnetic field sensing using a driven double quantum dot |
| title | Magnetic field sensing using a driven double quantum dot |
| title_full | Magnetic field sensing using a driven double quantum dot |
| title_fullStr | Magnetic field sensing using a driven double quantum dot |
| title_full_unstemmed | Magnetic field sensing using a driven double quantum dot |
| title_short | Magnetic field sensing using a driven double quantum dot |
| title_sort | magnetic field sensing using a driven double quantum dot |
| topic | Materials Sciences Physics |
| work_keys_str_mv | AT giavarasg magneticfieldsensingusingadrivendoublequantumdot AT wabnigj magneticfieldsensingusingadrivendoublequantumdot AT lovettb magneticfieldsensingusingadrivendoublequantumdot AT jeffersonj magneticfieldsensingusingadrivendoublequantumdot AT briggsg magneticfieldsensingusingadrivendoublequantumdot |