Journal
APPLIED PHYSICS LETTERS
Volume 107, Issue 26, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4938467
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Funding
- EPSRC in the UK [EP/G036101/1, EP/J010626/1, EP/J010634/1, EP/J01060X/1]
- NanoSC COST Action [MP-1201]
- JEOL Europe studentship [EP/I000933/1]
- STFC ISIS neutron and muon source
- RFBR in Russia [15-52-10045_Ko-a]
- EPSRC [EP/G036101/1, EP/I000933/1, EP/J010618/1, EP/G011230/1, EP/J010626/1, EP/J010634/1, EP/J01060X/1, EP/J010650/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/J010626/1, EP/J01060X/1, EP/I000933/1, EP/G011230/1, EP/J010634/1, EP/J010618/1, EP/G036101/1, EP/J010650/1] Funding Source: researchfish
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We demonstrate that the magnetic state of a superconducting spin valve, that is normally controlled with an external magnetic field, can also be manipulated by varying the temperature which increases the functionality and flexibility of such structures as switching elements. In this case, switching is driven by changes in the magnetostatic energy due to spontaneous Meissner screening currents forming in the superconductor below the critical temperature. Our scanning Hall probe measurements also reveal vortex-mediated pinning of the ferromagnetic domain structure due to the pinning of quantized stray fields in the adjacent superconductor. The ability to use temperature as well as magnetic field to control the local magnetisation structure raises the prospect of potential applications in magnetic memory devices. (C) 2015 AIP Publishing LLC.
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