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Possible entangleme...
Possible entanglement of the vortices in dyba2cu3O7 (y1-xprx)ba2cu3O7 coupled heterostructure
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- Fivat, Patrice (författare)
- Dept. de la Matière Condensée, University of Geneva, Geneva
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- Triscone, Jean-Marc (författare)
- Dept. de la Matière Condensée, University of Geneva, Geneva
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- Andersson, Magnus (författare)
- Dept. de la Matière Condensée, University of Geneva, Geneva
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- Obara, Haruhiko (författare)
- Dept. de la Matière Condensée, University of Geneva, Geneva
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- Fischer, Oystein (författare)
- Dept. de la Matière Condensée, University of Geneva, Geneva
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Dept de la Matière Condensée, University of Geneva, Geneva (creator_code:org_t)
- Elsevier BV, 1994
- 1994
- Engelska.
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Ingår i: Physica. C, Superconductivity. - : Elsevier BV. - 0921-4534 .- 1873-2143. ; 235, s. 2599-2600
- Relaterad länk:
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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
- Thermally activated flux motion is studied in proximity coupled multilayers, containing a number N of 24 Angstrom thick DyBa2Cu3O7 layers separated by 96 Angstrom (or more) of(Y1-xPrx)Ba2Cu3O7 alloy (x=0.4, x=0.55). In contrast to ultra-thin decoupled layers, for which we find that the activation energy for flux motion U approximate to=logB (H//c), coupled samples show a cross-over to a power law behaviour U approximate to B–0.5 at magnetic field H*. This characteristic field depends on the anisotropy and decreases as N increases, a behaviour which can be understood in terms of the entanglement of the vortices, resulting in a relative increase of U due to the flux line crossing energy.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
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