Field dependence of the superconducting basal plane anisotropy of TmNi<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mrow /><mml:mn>2</mml:mn></mml:msub></mml:math>B<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mrow /><mml:mn>2</mml:mn></mml:msub></mml:math>C

Das, Pinaki; Densmore, John M.; Rastovski, C.; Schlesinger, Kimberly J.; Laver, Mark; Dewhurst, C. D.; Littrell, Kenneth C.; Bud’ko, S.L.; Canfield, Paul C.; Eskildsen, M. R.

doi:10.1103/physrevb.86.144501

Cited by 2 publications

(2 citation statements)

References 27 publications

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“…Approaching H c2 , the paramagnetic depairing causes the vortex cores to expand, making them more isotropic. For H c this suppresses the fourfold anisotropy in the screening current plane, leading to a re-entrance of the the square VL phase (Bianchi et al, 2008;Das et al, 2012a;Eskildsen et al, 1998) The temperature dependence of the VL form factor reflects the structure of the superconducting gap, ∆. Specifically, F (q) is proportional to the superfluid density…”

Section: Field and Temperature Dependence Of The Vl Form Factormentioning

confidence: 99%

Magnetic small-angle neutron scattering

et al. 2019

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Small-angle neutron scattering (SANS) is one of the most important techniques for microstructure determination, being utilized in a wide range of scientific disciplines, such as materials science, physics, chemistry, and biology. The reason for its great significance is that conventional SANS is probably the only method capable of probing structural inhomogeneities in the bulk of materials on a mesoscopic real-space length scale, from roughly 1 − 300 nm. Moreover, the exploitation of the spin degree of freedom of the neutron provides SANS with a unique sensitivity to study magnetism and magnetic materials at the nanoscale. As such, magnetic SANS ideally complements more real-space and surface-sensitive magnetic imaging techniques, e.g., Lorentz transmission electron microscopy, electron holography, magnetic force microscopy, Kerr microscopy, or spinpolarized scanning tunneling microscopy. In this review article we summarize the recent applications of the SANS method to study magnetism and magnetic materials. This includes a wide range of materials classes, from nanomagnetic systems such as soft magnetic Fe-based nanocomposites, hard magnetic Nd−Fe−B-based permanent magnets, magnetic steels, ferrofluids, nanoparticles, and magnetic oxides, to more fundamental open issues in contemporary condensed matter physics such as skyrmion crystals, noncollinar magnetic structures in noncentrosymmetric compounds, magnetic/electronic phase separation, and vortex lattices in type-II superconductors. Special attention is paid not only to the vast variety of magnetic materials and problems where SANS has provided direct insight, but also to the enormous progress made regarding the micromagnetic simulation of magnetic neutron scattering.

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Section: Field and Temperature Dependence Of The Vl Form Factormentioning

confidence: 99%

Magnetic small-angle neutron scattering

et al. 2019

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“…Approaching H c2 , the paramagnetic depairing causes the vortex cores to expand, making them more isotropic. For Hkc this suppresses the fourfold anisotropy in the screening current plane, leading to a reentrance of the square VL phase (Eskildsen et al, 1998;Bianchi et al, 2008;Das, Densmore et al, 2012).…”

Section: Field and Temperature Dependence Of The Vl Form Factormentioning

confidence: 99%

Magnetic Small-Angle Neutron Scattering

Michels

2021

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This book provides the first extensive treatment of magnetic small-angle neutron scattering (SANS). The theoretical background required to compute magnetic SANS cross sections and correlation functions related to long-wavelength magnetization structures is laid out; and these concepts are scrutinized based on the discussion of experimental neutron data. Regarding prior background knowledge, some familiarity with the basic magnetic interactions and phenomena, as well as scattering theory, is desired. The target audience comprises Ph.D. students and researchers working in the field of magnetism and magnetic materials who wish to make efficient use of the magnetic SANS method. Besides revealing the origins of magnetic SANS (Chapter 1), and furnishing the basics of the magnetic SANS technique (Chapter 2), much of the book is devoted to a comprehensive treatment of the continuum theory of micromagnetics (Chapter 3), as it is relevant for the study of the elastic magnetic SANS cross section. Analytical expressions for the magnetization Fourier components allow one to highlight the essential features of magnetic SANS and to analyze experimental data both in reciprocal (Chapter 4) and real space (Chapter 6). Chapter 5 provides an overview of the magnetic SANS of nanoparticles and so-called complex systems (e.g., ferrofluids, magnetic steels, spin glasses, and amorphous magnets). It is this subfield where major progress is expected to be made in the coming years, mainly via the increased use of numerical micromagnetic simulations (Chapter 7), which is a very promising approach for the understanding of the magnetic SANS from systems exhibiting nanoscale spin inhomogeneity.

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Field dependence of the superconducting basal plane anisotropy of TmNi2B2C

Cited by 2 publications

References 27 publications

Magnetic small-angle neutron scattering

Magnetic small-angle neutron scattering

Magnetic Small-Angle Neutron Scattering

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