Unraveling the temperature and voltage dependence of magnetic field effects in organic semiconductors
In recent years, it was discovered that the current through an organic semiconductor, sandwiched between two non-magnetic electrodes, can be changed significantly by applying a small magnetic field. This surprisingly large magnetoresistance effect, often dubbed as organic magnetoresistance (OMAR), h...
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| Veröffentlicht in: | Journal of applied physics 2013-11, Vol.114 (17), p.174909 |
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| container_title | Journal of applied physics |
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| creator | Janssen, Paul Wouters, Steinar H. W. Cox, Matthijs Koopmans, Bert |
| description | In recent years, it was discovered that the current through an organic semiconductor, sandwiched between two non-magnetic electrodes, can be changed significantly by applying a small magnetic field. This surprisingly large magnetoresistance effect, often dubbed as organic magnetoresistance (OMAR), has puzzled the young field of organic spintronics during the last decade. Here, we present a detailed study on the voltage and temperature dependence of OMAR, aiming to unravel the lineshapes of the magnetic field effects and thereby gain a deeper fundamental understanding of the underlying microscopic mechanism. Using a full quantitative analysis of the lineshapes, we are able to extract all linewidth parameters and the voltage and temperature dependencies are explained with a recently proposed trion mechanism. Moreover, explicit microscopic simulations show a qualitative agreement to the experimental results. |
| doi_str_mv | 10.1063/1.4827864 |
| format | Article |
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Using a full quantitative analysis of the lineshapes, we are able to extract all linewidth parameters and the voltage and temperature dependencies are explained with a recently proposed trion mechanism. Moreover, explicit microscopic simulations show a qualitative agreement to the experimental results.</description><subject>Applied physics</subject><subject>Electric potential</subject><subject>Electrodes</subject><subject>Magnetic fields</subject><subject>Magnetism</subject><subject>Magnetoresistance</subject><subject>Magnetoresistivity</subject><subject>Organic semiconductors</subject><subject>Qualitative analysis</subject><subject>Quantitative analysis</subject><subject>Spintronics</subject><subject>Temperature dependence</subject><subject>Trions</subject><subject>Voltage</subject><issn>0021-8979</issn><issn>1089-7550</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><recordid>eNpdkE1LxDAURYMoOI4u_AcBN7romJc0aboU8QsG3DjrEpPX2qFNxiQd8N9bmVm5uot7uFwOIdfAVsCUuIdVqXmlVXlCFsB0XVRSslOyYIxDoeuqPicXKW0ZA9CiXhDc-Gj2OPS-o_kLacZxh9HkKSI13tF9GLLpkDrcoXfoLdLQ0tF0HnNvadvj4Ci2LdqcaO9piJ3xc5Fw7G3wbrI5xHRJzlozJLw65pJsnp8-Hl-L9fvL2-PDurCCy1yIUgMXSuMnWGucrEEqw0vpjGVGS2G5ckywFkuDJQhXchAVyso5cFqhE0tye9jdxfA9YcrN2CeLw2A8hik1oCpQnLPZ1JLc_EO3YYp-ftdw4LVktSrZTN0dKBtDShHbZhf70cSfBljzJ7yB5ihc_AIspXLS</recordid><startdate>20131107</startdate><enddate>20131107</enddate><creator>Janssen, Paul</creator><creator>Wouters, Steinar H. 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| ispartof | Journal of applied physics, 2013-11, Vol.114 (17), p.174909 |
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| language | eng |
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| source | AIP Journals Complete; AIP Digital Archive; Alma/SFX Local Collection |
| subjects | Applied physics Electric potential Electrodes Magnetic fields Magnetism Magnetoresistance Magnetoresistivity Organic semiconductors Qualitative analysis Quantitative analysis Spintronics Temperature dependence Trions Voltage |
| title | Unraveling the temperature and voltage dependence of magnetic field effects in organic semiconductors |
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