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Coronal loops reveal crucial information about the nature of both coronal magnetic fields and coronal heating. The shape of the corresponding flux tube cross section and how it varies with position are especially important properties. They…

Solar and Stellar Astrophysics · Physics 2020-07-31 James A. Klimchuk , Craig E. DeForest

Superconducting diode effect, in analogy to the nonreciprocal resistive charge transport in semiconducting diode, is a nonreciprocity of dissipationless supercurrent. Such an exotic phenomenon originates from intertwining between…

Superconductivity · Physics 2023-02-01 Muhammad Nadeem , Michael S. Fuhrer , Xiaolin Wang

The electronic transport of a noninteracting quantum ring side-coupled to a quantum wire is studied via a single-band tunneling tight-binding Hamiltonian. We found that the system develops an oscillating band with antiresonances and…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 P. A. Orellana , M. L. Ladron de Guevara , M. Pacheco , A. Latge

Is pulsar make up of strange matter? The magnetic field decay of a pulsar may be able to give us an answer. Since Cooper pairing of quarks occurs inside a sufficiently cold strange star, the strange stellar core is superconducting. In order…

Astrophysics · Physics 2009-10-28 H. F. Chau

We have experimentally investigated the magnetisation of a mesoscopic aluminum loop at temperatures well below the superconducting transition temperature $T_{c}$. The flux quantisation of the superconducting loop was investigated with a…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 S. Pedersen , G. R. Kofod , J. C. Hollingbery , C. B. Sørensen , P. E. Lindelof

A single static magnetic impurity in a fully-gapped superconductor leads to formation of an intragap quasiparticle bound state. At temperatures much below the superconducting transition, the energy relaxation and spin dephasing of the state…

Strongly Correlated Electrons · Physics 2014-10-01 Ivar Martin , Dmitry Mozyrsky

An electric current generates a magnetic field, and magnetic fields cannot exist in the interior of type I superconductors. As a consequence of these two facts, electric currents can only flow near the surface of a type I superconducting…

Superconductivity · Physics 2021-08-25 J. E. Hirsch

We consider magnetic flux penetration in a superconducting film with a concave corner. Unlike convex corners, where the current flow pattern is easily constructed from Bean's critical state model, the current flow pattern at a concave…

Superconductivity · Physics 2013-05-07 J. I Vestgarden , T. H. Johansen

The preceding Comment [1], previously posted as arXiv:2312.04495 [2], on our paper J. Supercond. Nov. Mag. 35, 3141 (2022) [3] provides a welcome opportunity to clarify what we understand to be pervading misconceptions by Eremets, Minkov…

Superconductivity · Physics 2024-12-10 J. E. Hirsch , F. Marsiglio

The symmetry properties and the general overview of the superconductivity theory in the itinerant ferromagnets and in materials without space parity are presented. The basic notions of unconventional superconductivity are introduced in…

Superconductivity · Physics 2009-11-10 V. P. Mineev

The vortex motion in a superfluid or a type II superconductor is similar to the electron motion in a magnetic field, because they both feel a transverse force. The vortex dynamics in a superconductor is a basic property of the…

Superconductivity · Physics 2008-02-03 X. -M. Zhu , B. Sundqvist

The magnetic flux periodicity of superconducting loops as well as flux quantization itself are a manifestation of macroscopic quantum phenomena with far reaching implications. They provide the key to the understanding of many fundamental…

Superconductivity · Physics 2008-02-11 F. Loder , A. P. Kampf , T. Kopp , J. Mannhart , C. W. Schneider , Yu. S. Barash

The conductivity of vortex lattices in multiband superconductors with high concentration of impurities is calculated based on microscopic kinetic theory. Both the limits of high and low fields are considered, when the magnetic induction is…

Superconductivity · Physics 2016-12-21 Mihail Silaev , Artjom Vargunin

The thermodynamic principle of superfluid flow -- that the energy is minimized at constant entropy -- is applied to superconducting currents to derive the Meissner-Ochsenfeld effect in which magnetic fields are expelled from…

General Physics · Physics 2025-09-19 Phil Attard

Quantum phase slips have received much attention due to their relevance to superfluids in reduced dimensions and to models of cosmic string production in the Early Universe. Their establishment in one-dimensional superconductors has…

Superconductivity · Physics 2009-11-11 Fabio Altomare , Albert M. Chang , Michael R. Melloch , Yuguang Hong , Charles W. Tu

Kinetics of magnetic flux in a thin mesoscopic ring biased by a strong external magnetic field is described equivalently by dynamics of a Brownian particle in a tilted washboard potential. The 'flux velocity', i.e. the averaged time…

Mesoscale and Nanoscale Physics · Physics 2015-06-25 Jerzy Dajka , Lukasz Machura , Szymon Rogozinski , Jerzy Luczka

It has recently been reported that hydrogen-rich materials under high pressure trap magnetic flux, a tell-tale signature of superconductivity [arXiv:2206.14108v1]. Here we point out that under the protocol used in these experiments the…

Superconductivity · Physics 2023-05-31 J. E. Hirsch , F. Marsiglio

The differential cross section for the inelastic magnetic scattering of neutrons by superconducting rings is derived theoretically taking account of the interaction of the neutron magnetic moment with magnetic field created by the…

Superconductivity · Physics 2015-05-18 A. I. Agafonov

In Nat Commun 13, 3194 (2022) [1], Minkov et al. reported magnetization measurements on hydrides under pressure that claimed to find a diamagnetic signal below a critical temperature demonstrating the existence of superconductivity. Here we…

Superconductivity · Physics 2023-10-06 J. E. Hirsch , F. Marsiglio

It is found that the magnetization curves of samples of fragments of cathode carbon deposits with a high content of multiwalled nanotubes exhibit a pronounced irreversible character, attesting to the induction of persistent currents in the…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 V. I. Tsebro , O. E. Omelyanovskii , A. P. Moravskii