Effect of molecular ordering on spin and charge injection in rubrene
Studies have shown that interfaces play a crucial role for efficient spin injection and transport. Here, we address the complex role of interface in spin and charge injection into organic materials by various interface-sensitive characterization tools. Inelastic tunneling spectroscopy and polarized...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | en_US |
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American Physical Society
2010
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| Online Access: | http://hdl.handle.net/1721.1/52587 https://orcid.org/0000-0002-2480-1211 |
| _version_ | 1811086390625042432 |
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| author | Moodera, Jagadeesh Shim, J. H. Raman, K. V. Chang, Joonyeon Borchers, J. A. Watson, S. M. |
| author2 | Francis Bitter Magnet Laboratory (Massachusetts Institute of Technology) |
| author_facet | Francis Bitter Magnet Laboratory (Massachusetts Institute of Technology) Moodera, Jagadeesh Shim, J. H. Raman, K. V. Chang, Joonyeon Borchers, J. A. Watson, S. M. |
| author_sort | Moodera, Jagadeesh |
| collection | MIT |
| description | Studies have shown that interfaces play a crucial role for efficient spin injection and transport. Here, we address the complex role of interface in spin and charge injection into organic materials by various interface-sensitive characterization tools. Inelastic tunneling spectroscopy and polarized neutron reflectometry were mainly adopted to explore the interfaces of high mobility organic semiconductor rubrene sandwiched by two ferromagnetic electrodes. The dramatic difference in the reported magnetotransport properties and charge injection characteristics in trilayer magnetic junctions has been attributed to the different growth morphology of rubrene molecules at the interface dictated by the presence or absence of a 0.6 nm alumina seed layer. The magnetic contribution of the top ferromagnetic electrode is also influenced by the morphology of the rubrene layer underneath, directly affecting the spin injection efficiency. This work highlights the importance of interface engineering in the development of organic-based spintronics devices. |
| first_indexed | 2024-09-23T13:25:14Z |
| format | Article |
| id | mit-1721.1/52587 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T13:25:14Z |
| publishDate | 2010 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/525872022-09-28T14:03:34Z Effect of molecular ordering on spin and charge injection in rubrene Moodera, Jagadeesh Shim, J. H. Raman, K. V. Chang, Joonyeon Borchers, J. A. Watson, S. M. Francis Bitter Magnet Laboratory (Massachusetts Institute of Technology) Chang, Joonyeon Moodera, Jagadeesh Shim, J. H. Raman, K. V. Chang, Joonyeon Studies have shown that interfaces play a crucial role for efficient spin injection and transport. Here, we address the complex role of interface in spin and charge injection into organic materials by various interface-sensitive characterization tools. Inelastic tunneling spectroscopy and polarized neutron reflectometry were mainly adopted to explore the interfaces of high mobility organic semiconductor rubrene sandwiched by two ferromagnetic electrodes. The dramatic difference in the reported magnetotransport properties and charge injection characteristics in trilayer magnetic junctions has been attributed to the different growth morphology of rubrene molecules at the interface dictated by the presence or absence of a 0.6 nm alumina seed layer. The magnetic contribution of the top ferromagnetic electrode is also influenced by the morphology of the rubrene layer underneath, directly affecting the spin injection efficiency. This work highlights the importance of interface engineering in the development of organic-based spintronics devices. National Science Foundation (Grant No. DMR-0504158) United States Office of Naval Research (Grant No. N00014-09-1-0177) Korea Institute of Science and Technology 2010-03-15T18:02:44Z 2010-03-15T18:02:44Z 2009-11 2009-10 Article http://purl.org/eprint/type/JournalArticle 1550-235X 1098-0121 http://hdl.handle.net/1721.1/52587 Raman, K. V. et al. “Effect of molecular ordering on spin and charge injection in rubrene.” Physical Review B 80.19 (2009): 195212. © 2009 The American Physical Society https://orcid.org/0000-0002-2480-1211 en_US http://dx.doi.org/10.1103/PhysRevB.80.195212 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 | Moodera, Jagadeesh Shim, J. H. Raman, K. V. Chang, Joonyeon Borchers, J. A. Watson, S. M. Effect of molecular ordering on spin and charge injection in rubrene |
| title | Effect of molecular ordering on spin and charge injection in rubrene |
| title_full | Effect of molecular ordering on spin and charge injection in rubrene |
| title_fullStr | Effect of molecular ordering on spin and charge injection in rubrene |
| title_full_unstemmed | Effect of molecular ordering on spin and charge injection in rubrene |
| title_short | Effect of molecular ordering on spin and charge injection in rubrene |
| title_sort | effect of molecular ordering on spin and charge injection in rubrene |
| url | http://hdl.handle.net/1721.1/52587 https://orcid.org/0000-0002-2480-1211 |
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