2013 Fiscal Year Final Research Report
Mechanism of anomalously large magnetoresistance in nanosized tunnel contacts
| Project/Area Number |
24760025
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Thin film/Surface and interfacial physical properties
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| Research Institution | Utsunomiya University |
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Principal Investigator |
SAKUMA Hiroshi 宇都宮大学, 工学(系)研究科(研究院), 准教授 (40375522)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Keywords | プローブ顕微鏡 / トンネル接合 / 磁気抵抗効果 |
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| Research Abstract |
We observed anomalously large magentoresistance in nanosized tunnel contacts formed by a nanoprober system. In this study, three possible mechanisms for the observed phenomenon were examined: the formation of a nanostructure by a large electric field between probe and thin film, a novel magnetotransport phenomenon, and the deformation of the prober system. An experimental result suggesting that atoms migrates by the scanning of the probe on the thin film was obtained, although it was not conclusive.
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