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Vortex-like state o...
Vortex-like state observed in ferromagnetic contacts
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- Yanson, I. K. (författare)
- B. Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine, 47 Lenin ave., 61103, Kharkiv, Ukraine
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- Naidyuk, Yu G. (författare)
- B. Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine, 47 Lenin ave., 61103, Kharkiv, Ukraine
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- Fisun, V. V. (författare)
- B. Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine, 47 Lenin ave., 61103, Kharkiv, Ukraine
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- Balkashin, O. P. (författare)
- B. Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine, 47 Lenin ave., 61103, Kharkiv, Ukraine
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- Triputen, L. Y. (författare)
- B. Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine, 47 Lenin ave., 61103, Kharkiv, Ukraine
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- Konovalenko, Alexander, 1975- (författare)
- KTH,Nanostrukturfysik
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- Korenivski, Vladislav (författare)
- KTH,Nanostrukturfysik
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B Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine, 47 Lenin ave., 61103, Kharkiv, Ukraine Nanostrukturfysik (creator_code:org_t)
- 2010-02-15
- 2010
- Engelska.
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Ingår i: Journal of Physics: Conference Series. - : Institute of Physics Publishing (IOPP). - 1742-6588 .- 1742-6596. ; 200:5, s. 1-4
- Relaterad länk:
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http://iopscience.io...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Point-contacts (PC) offer a simple way to create high current densities, 109 A/cm 2and beyond, without substantial Joule heating. We have shown recently (Nano Letters, 7(2007) 927) that conductivity of nanosized PCs between a normal and ferromagnetic metalsexhibits bi-stable hysteretic states versus both bias current and external magnetic field – theeffect typical for spin-valve structures. Here we report that apart from the bi-stable state athird intermediate-resistance state is occasionally observed. We interpret this state as due toa spin-vortex in the PC, nucleated either by Oersted field of the bias current and/or by thecircular geometry of PC. The observed three-level-states in the PC conductivity testify that theinterface spins are both weakly coupled to the spins in the bulk and have depressed exchangeinteraction within the surface layer.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Nanoteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Nano-technology (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Annan elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Other Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Nyckelord
- vortex
- spin valve
- point contact
- micromagnetism
- spin
- magnetic
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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