The Meissner effect is one of the defining properties superconductivity, with a conventional superconductor completely repelling an external magnetic field. In contrast to this diamagnetic behavior, odd-frequency superconducting pairing has often been seen produce paramagnetic effect, which instead makes unstable due attraction work we study how both even- and contributes in generic two-orbital...

We report on low-temperature susceptibility and magnetization measurements made single crystals of the recently discovered heavy-fermion superconductor ${\mathrm{UTe}}_{2}$ compare results with two ambient pressure ferromagnetic superconductors URhGe UCoGe. Hysteresis curves in superconducting phase show a familiar diamond shape superimposed large paramagnetic background. The Meissner state was...

We consider N = 1 supersymmetric QCD with the gauge group U(N) and Nf = N quark flavors. To get rid of flat directions we add a meson superfield. The theory has no adjoint fields and, therefore, no ’t Hooft–Polyakov monopoles in the quasiclassical limit. We observe a non-Abelian Meissner effect: condensation of color charges (squarks) gives rise to confined monopoles. The very fact of their exi...

The time-tested BCS theory of superconductivity is generally accepted to be the correct theory of conventional superconductivity by physicists and, by extension, by the world at large. There are, however, an increasing number of ‘red flags’ that strongly suggest the possibility that BCS theory may be fundamentally flawed. An ever-growing number of superconductors are being classified as ‘unconv...

The possibility of a gravitational phase transition, especially with respect to neutron stars is investigated. First, a semiclassical treatment is given, predicting a gravitational London penetration depth of 12km for neutron stars. Second, the problem is considered from a GinzburgLandau point of view. A gravitational Meissner effect, a gravitational Aharanov-Bohm type effect and a gravitationa...

Detailed investigation of the superconducting transition of niobium disks exhibiting the paramagnetic Meissner effect. Abstract The superconducting transition region in a Nb disk showing the para-magnetic Meissner effect (PME) has been investigated in detail. From the field-cooled magnetization behavior, two well-defined temperatures can be associated with the appearance of the PME: T 1 (< T c)...

Citation Oates, D. E. et al. " Nonlinear Meissner effect in a high-temperature superconductor: Local versus nonlocal electrodynamics. Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Y...

We study the color confinement, the q-¯ q pair creation and the dynamical chiral-symmetry breaking of nonperturbative QCD by using the dual Ginzburg-Landau theory, where QCD-monopole condensation plays an essential role on the nonper-turbative dynamics in the infrared region. As a result of the dual Meissner effect, the linear static quark potential, which characterizes the quark confinement, i...