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Impact of tunnel-ba...
Impact of tunnel-barrier strength on magnetoresistance in carbon nanotubes
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- Morgan, Caitlin (författare)
- Forschungszentrum Jülich GmbH,JARA - Fundamentals of Future Information Technologies
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- Misiorny, Maciej, 1982 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Metten, D. (författare)
- Université de Strasbourg,University of Strasbourg,Forschungszentrum Jülich GmbH,JARA - Fundamentals of Future Information Technologies
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- Heedt, Sebastian (författare)
- Forschungszentrum Jülich GmbH,JARA - Fundamentals of Future Information Technologies
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- Schäpers, Thomas (författare)
- Forschungszentrum Jülich GmbH,JARA - Fundamentals of Future Information Technologies
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- Schneider, Claus M. (författare)
- Universität Duisburg-Essen,University of Duisburg-Essen,JARA - Fundamentals of Future Information Technologies,Forschungszentrum Jülich GmbH
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- Meyer, Carola (författare)
- Universität Osnabrück,Osnabrück University,Forschungszentrum Jülich GmbH,JARA - Fundamentals of Future Information Technologies
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(creator_code:org_t)
- 2016
- 2016
- Engelska.
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Ingår i: Physical Review Applied. - 2331-7019. ; 5:5, s. 054010-
- Relaterad länk:
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http://publications.... (primary) (free)
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https://research.cha...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- We investigate magnetoresistance in spin valves involving CoPd-contacted carbon nanotubes. Both the temperature and bias-voltage dependence clearly indicate tunneling magnetoresistance as the origin. We show that this effect is significantly affected by the tunnel-barrier strength, which appears to be one reason for the variation between devices previously detected in similar structures. Modeling the data by means of the scattering matrix approach, we find a nontrivial dependence of the magnetoresistance on the barrier strength. Furthermore, an analysis of the spin precession observed in a nonlocal Hanle measurement yields a spin lifetime of tau_s=1.1 ns, a value comparable with those found in silicon- or graphene-based spin-valve devices.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
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- ref (ämneskategori)
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