Nuclear spin dynamics in double quantum dots: Fixed points, transients, and intermittency
Transport through spin-blockaded quantum dots provides a means for electrical control and detection of nuclear spin dynamics in the host material. Although such experiments have become increasingly popular in recent years, interpretation of their results in terms of the underlying nuclear spin dynam...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
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American Physical Society
2011
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| Online Access: | http://hdl.handle.net/1721.1/67048 https://orcid.org/0000-0002-4268-731X |
| _version_ | 1810979829881765888 |
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| author | Rudner, M. S. Koppens, Frank Henricus Louis Folk, J. A. Vandersypen, L. M. K. Levitov, Leonid |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Rudner, M. S. Koppens, Frank Henricus Louis Folk, J. A. Vandersypen, L. M. K. Levitov, Leonid |
| author_sort | Rudner, M. S. |
| collection | MIT |
| description | Transport through spin-blockaded quantum dots provides a means for electrical control and detection of nuclear spin dynamics in the host material. Although such experiments have become increasingly popular in recent years, interpretation of their results in terms of the underlying nuclear spin dynamics remains challenging. Here we examine nuclear polarization dynamics within a two-polarization model that supports a wide range of nonlinear phenomena. We point out a fundamental process in which nuclear spin dynamics can be driven by electron shot noise; fast electric current fluctuations generate much slower nuclear polarization dynamics, which in turn affect electron dynamics via the Overhauser field. The resulting intermittent, extremely slow current fluctuations account for a variety of observed phenomena that were not previously understood. |
| first_indexed | 2024-09-23T09:49:11Z |
| format | Article |
| id | mit-1721.1/67048 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T09:49:11Z |
| publishDate | 2011 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/670482022-09-30T17:01:00Z Nuclear spin dynamics in double quantum dots: Fixed points, transients, and intermittency Rudner, M. S. Koppens, Frank Henricus Louis Folk, J. A. Vandersypen, L. M. K. Levitov, Leonid Massachusetts Institute of Technology. Department of Physics Levitov, Leonid Levitov, Leonid Transport through spin-blockaded quantum dots provides a means for electrical control and detection of nuclear spin dynamics in the host material. Although such experiments have become increasingly popular in recent years, interpretation of their results in terms of the underlying nuclear spin dynamics remains challenging. Here we examine nuclear polarization dynamics within a two-polarization model that supports a wide range of nonlinear phenomena. We point out a fundamental process in which nuclear spin dynamics can be driven by electron shot noise; fast electric current fluctuations generate much slower nuclear polarization dynamics, which in turn affect electron dynamics via the Overhauser field. The resulting intermittent, extremely slow current fluctuations account for a variety of observed phenomena that were not previously understood. Netherlands Organization for Scientific Research Foundation for Fundamental Research on Matter (Netherlands) European Research Council National Science Foundation (U.S.) (Grant No. DMR-090647) National Science Foundation (U.S.) (Grant No. PHY-0646094) United States. Intelligence Advanced Research Projects Activity 2011-11-17T17:46:12Z 2011-11-17T17:46:12Z 2011-08 2011-07 Article http://purl.org/eprint/type/JournalArticle 1550-235X 1098-0121 http://hdl.handle.net/1721.1/67048 Rudner, M. et al. “Nuclear spin dynamics in double quantum dots: Fixed points, transients, and intermittency.” Physical Review B 84 (2011): n. pag. Web. 17 Nov. 2011. © 2011 American Physical Society https://orcid.org/0000-0002-4268-731X en_US http://dx.doi.org/10.1103/PhysRevB.84.075339 Physical Review B Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Physical Society APS |
| spellingShingle | Rudner, M. S. Koppens, Frank Henricus Louis Folk, J. A. Vandersypen, L. M. K. Levitov, Leonid Nuclear spin dynamics in double quantum dots: Fixed points, transients, and intermittency |
| title | Nuclear spin dynamics in double quantum dots: Fixed points, transients, and intermittency |
| title_full | Nuclear spin dynamics in double quantum dots: Fixed points, transients, and intermittency |
| title_fullStr | Nuclear spin dynamics in double quantum dots: Fixed points, transients, and intermittency |
| title_full_unstemmed | Nuclear spin dynamics in double quantum dots: Fixed points, transients, and intermittency |
| title_short | Nuclear spin dynamics in double quantum dots: Fixed points, transients, and intermittency |
| title_sort | nuclear spin dynamics in double quantum dots fixed points transients and intermittency |
| url | http://hdl.handle.net/1721.1/67048 https://orcid.org/0000-0002-4268-731X |
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