Magnetization of the ferromagnetic-superconductor structures

Genkin, G. M.; Skuzovatkin, V. V.; Tokman, I. D.

doi:10.1016/0304-8853(94)90656-4

Cited by 23 publications

(24 citation statements)

References 4 publications

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“…In particular, for superconductor-ferromagnet bilayers the electromagnetic interaction may lead to a maximum 15% contraction of the ferromagnetic domains in equilibrium state as it has been first predicted by Genkin, Tokman, and Skuzovatkin in Ref. 17 (see also later analysis in Refs. [18,19]).…”

Section: Introductionmentioning

confidence: 89%

“…Increasing magnetization amplitude M 0 one can effectively suppress the contribution of the first term in (17) relatively to the second one. At the certain magnetization value the energy profile turns to negative value at some point and the vortex state becomes more favorable than the Meissner one for the fixed domain size.…”

Section: Vortex Penetration Threshold Bean-livingston Barrier Pmentioning

confidence: 99%

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Phase transitions in the domain structure of ferromagnetic superconductors

2014

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Starting from the London -type model we study the domain structures in ferromagnetic superconductors taking account of the nucleation of vortices and antivortices coupled to the magnetic texture. We predict that the coupling between domains and vortices results in the formation of two energetically favorable domain configurations: (i) a Meissner -type vortex free configuration with strong domain shrinking and (ii) a more rare domain configuration with a dense vortex -antivortex lattice. The switching between these configurations is shown to result in the first order phase transitions which could be observable in superconducting uranium based compounds.

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Section: Introductionmentioning

confidence: 89%

Section: Vortex Penetration Threshold Bean-livingston Barrier Pmentioning

confidence: 99%

Phase transitions in the domain structure of ferromagnetic superconductors

2014

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“…No spontaneous V-AV pairs were observed in zero applied magnetic field. It has been predicted theoretically that V-AV pairs could be induced by the outof-plane ferromagnet magnetization 19,20 when certain geometrical conditions between the ferromagnet stripe domain width, superconducting penetration depth and superconductor thickness are met. However, spontaneous V-AV pairs in planar S/F systems were not observed so far.…”

mentioning

confidence: 99%

“…The condition for spontaneous formation of V-AV pairs in S/F hybrids has been considered theoretically in Ref. 19,20 in the case of a ferromagnet with out-of-plane magnetization forming alternating up and down domains ±M 0 along one of the in-plane axis. This simplified model is sufficient to describe the effect of the out-of-plane component of Py stray field on the vortices in the superconducting Nb film.…”

mentioning

confidence: 99%

Imaging the spontaneous formation of vortex-antivortex pairs in planar superconductor/ferromagnet hybrid structures

et al. 2011

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Low-temperature magnetic force microscopy has been used to visualize spontaneous formation of vortex-antivortex pairs in hybrid ferromagnet/superconductor systems. Vortex-antivortex pairs are induced by the periodic stray field of the ferromagnet. We find general equilibrium conditions for which spontaneous vortex-antivortex pairs are formed during zero-field cooling of the hybrid ferromagnet/superconductor bilayers. Vortices can be generated by the ferromagnet domains in the absence of an external field and they are thermodynamically stable for values of the stray field and the period of the stripe magnetic domains that exceed a certain threshold

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“…[19][20][21] The majority of experiments on planar magnetically coupled superconductor/ferromagnet heterostructures have so far been primarily focused on global measurements 13,[22][23][24][25] with theoretical insights based on London formalism. 26,27 However, the increased use of local probes, such as the scanning tunneling microscopy 28,29 and magnetic force microscopy (MFM), 30,31 has begun to reveal a rich body of new physics on the mesoscopic scale. In this work, we examine the local DOS in a thin lead film magnetically coupled to a Co-Pd multilayer.…”

mentioning

confidence: 99%

Doppler-scanning tunneling microscopy current imaging in superconductor-ferromagnet hybrids

Moore

Plummer

Fedor

et al. 2016

Applied Physics Letters

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Mapping the distribution of currents inside a superconductor is usually performed indirectly through imaging of the stray magnetic fields above the surface. Here, we show that by direct imaging of the Doppler shift contribution to the quasiparticle excitation spectrum in the superconductor using low temperature scanning tunneling microscopy, we obtain directly the distribution of supercurrents inside the superconductor. We demonstrate the technique at the example of superconductor/ferromagnet hybrid structure that produces intricate current pattern consisting of combination Meissner shielding currents and Abrikosov vortex currents.

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Magnetization of the ferromagnetic-superconductor structures

Cited by 23 publications

References 4 publications

Phase transitions in the domain structure of ferromagnetic superconductors

Phase transitions in the domain structure of ferromagnetic superconductors

Imaging the spontaneous formation of vortex-antivortex pairs in planar superconductor/ferromagnet hybrid structures

Doppler-scanning tunneling microscopy current imaging in superconductor-ferromagnet hybrids

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