Scanning Hall Probe Microscopy of Magnetic Vortices inVery Underdoped yttrium-barium-copper-oxide

Guikema, Janice Wynn

doi:10.2172/877527

Cited by 4 publications

(2 citation statements)

References 66 publications

(136 reference statements)

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“…According to ref. 43, the accuracy of the model can be improved by averaging over an area representative of the Hall probe active area to account for the convolution of the field over the probe. The integration of equation (2) …”

Section: Methodsmentioning

confidence: 99%

Bound vortex dipoles generated at pinning centres by Meissner current

Ge¹,

Gutiérrez²,

Gladilin

et al. 2015

Nat Commun

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One of the phenomena that make superconductors unique materials is the MeissnerOchsenfeld effect. This effect results in a state in which an applied magnetic field is expelled from the bulk of the material because of the circulation near its surface of resistance-free currents, also known as Meissner currents. Notwithstanding the intense research on the Meissner state, local fields due to the interaction of Meissner currents with pinning centres have not received much attention. Here we report that the Meissner currents, when flowing through an area containing a pinning centre, generate in its vicinity two opposite sense current half-loops producing a bound vortex-antivortex pair, which eventually may transform into a fully developed vortex-antivortex pair ultimately separated in space. The generation of such vortex dipoles by Meissner currents is not restricted to superconductors; similar topological excitations may be present in other systems with Meissner-like phases.

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Section: Methodsmentioning

confidence: 99%

Bound vortex dipoles generated at pinning centres by Meissner current

Ge¹,

Gutiérrez²,

Gladilin

et al. 2015

Nat Commun

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“…The scanning SET probe investigated in this work is similar to that reported in Reference [25], as schematically shown in Figure 2(a). The Coulomb island with tunnel coupling to the source and the drain is the sensitive core for charge sensing.…”

Section: Model Of Charge Detectionmentioning

confidence: 83%

A sensitive charge scanning probe based on silicon single electron transistor

Qin

et al. 2016

J. Semicond.

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Single electron transistors (SETs) are known to be extremely sensitive electrometers owing to their high charge sensitivity. In this work, we report the design, fabrication, and characterization of a silicon-on-insulator-based SET scanning probe. The fabricated SET is located about 10 μm away from the probe tip. The SET with a quantum dot of about 70 nm in diameter exhibits an obvious Coulomb blockade effect measured at 4.1 K. The Coulomb blockade energy is about 18 meV, and the charge sensitivity is in the order of 10−5−10−3 e/Hz1/2. This SET scanning probe can be used to map charge distribution and sense dynamic charge fluctuation in nanodevices or circuits under test, realizing high sensitivity and high spatial resolution charge detection.

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Is edible insect as a novel food digestible?

Adámek

Mlček

Adámková

et al. 2019

Potr. S. J. F. Sci.

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This work deals with the digestibility of a selected species of edible insect - mealworm (larvae) as novel food in dependency on its culinary treatment. The aim of this work was to find suitable thermic culinary treatment of mealworm larvae considering its optimum digestibility by human. The digestibility of materials from whole insect and extracted nitrogenous substances was determined using three different culinary treatments - without culinary treatment (freshly killed), dried insect and roasted insect. The digestibility was determined by gravimetric in vitro method using pepsin and pancreatin enzymes and their combination. The total nitrogen content of the insect samples was determined by the Kjeldahl method. The digestibility of the whole homogenized larvae using the combination of pepsin and pancreatin enzymes, thus simulating human digestion in-vitro, ranged from 81% for roasted specimens to 91.5% for culinary unprocessed insect. Similarly, the digestibility of nitrogenous substances of homogenized insect samples using this combination of enzymes ranged from 24.2% for roasted specimens to 80.2% for culinary unprocessed samples. The work showed the dependence of the digestibility of the mealworm larvae on the culinary treatment - the increasing heat load of the sample reduced the digestibility. Furthermore, it proved the effect of the digestive enzyme on the digestibility of the insect sample.

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Scanning Hall Probe Microscopy of Magnetic Vortices inVery Underdoped yttrium-barium-copper-oxide

Cited by 4 publications

References 66 publications

Bound vortex dipoles generated at pinning centres by Meissner current

Bound vortex dipoles generated at pinning centres by Meissner current

A sensitive charge scanning probe based on silicon single electron transistor

Is edible insect as a novel food digestible?

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