Results 91 to 100 of about 28,956 (218)

Superconductors and the periodic penetration parameter: Defining and utilizing in diverse applications

open access: yesAIP Advances
There are various types of materials that have different levels of electrical conductivity, and one category is known as superconductors or superconducting materials.
Mohamad Asem Alkourdi   +2 more
doaj   +1 more source

Extinction phenomenon for Spinor Ginzburg-Landau equations

open access: yesBulletin of the Belgian Mathematical Society - Simon Stevin, 2012
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +3 more sources

Materials Design Principles for Large Memory Windows: Coercive Voltage Engineering in Ferroelectric– Dielectric Heterostructures

open access: yesAdvanced Electronic Materials, Volume 12, Issue 8, 20 April 2026.
Coercive voltage enhancement in hafnia‐based ferroelectric–dielectric heterostructures is shown to originate from leakage‐governed voltage division between the ferroelectric and dielectric layers. Through experiments, circuit modeling, and defect‐based simulations, a universal framework is established to engineer large memory windows without altering ...
Prasanna Venkatesan   +21 more
wiley   +1 more source

Approximate Ginzburg-Landau solution for the regular flux-line lattice. Circular cell method

open access: yes, 2001
A variational model is proposed to describe the magnetic properties of type-II superconductors in the entire field range between $H_{c1}$ and $H_{c2}$ for any values of the Ginzburg-Landau parameter $\kappa>1/\sqrt{2}$.
A. A. Abrikosov   +49 more
core   +1 more source

Nonlinear Magnetoconvection in a Sparsely Packed Porous Medium

open access: yesInternational Journal of Geophysics, 2011
Linear and weakly nonlinear properties of magnetoconvection in a sparsely packed porous medium are investigated. We have obtained the values of Takens-Bogdanov bifurcation points and codimension two bifurcation points by plotting graphs of neutral curves
A. Benerji Babu   +2 more
doaj   +1 more source

Hitchhiker's Guide to the Swampland: The Cosmologist's Handbook to the String‐Theoretical Swampland Programme

open access: yesFortschritte der Physik, Volume 74, Issue 4, April 2026.
Abstract String theory has strong implications for cosmology, implying the absence of a cosmological constant, ruling out single‐field slow‐roll inflation, and that black holes decay. The origins of these statements are elucidated within the string‐theoretical swampland programme.
Kay Lehnert
wiley   +1 more source

Topological methods for the Ginzburg-Landau equations

open access: yesJournal de Mathématiques Pures et Appliquées, 1998
Summary: We consider the Ginzburg-Landau equation \[ - \Delta u = \varepsilon^{- 2} u \bigl( 1 - |u |^2 \bigr) \text{ in } \Omega, \quad u = g \text{ on } \partial \Omega, \] where \(\Omega\) is a domain in \(\mathbb{R}^2\), \(g : \partial \Omega \to \mathbb{C}\) is such that \(|g |= 1\) on \(\partial \Omega\), and \(\varepsilon > 0\) is a parameter ...
Almeida, Luís, Bethuel, Fabrice
openaire   +3 more sources

Enhanced Ferroelectricity in Hf1−XZrXO2 Thin Films Through Ultrathin Mo Electrode Layer and Microwave Annealing

open access: yesphysica status solidi (RRL) – Rapid Research Letters, Volume 20, Issue 4, April 2026.
Uniform volumetric heating via microwave annealing combined with an ultrathin Mo interlayer enables low‐temperature crystallization of thin HZO films. Interfacial degradation and dead‐layer formation are suppressed, resulting in enlarged ferroelectric domains, uniform switching behavior, and a high remanent polarization of 45.2 μC/cm2 at 200°C.
Sohyeon An   +5 more
wiley   +1 more source

Darboux-Egoroff Metrics, Rational Landau-Ginzburg Potentials and the Painleve VI Equation

open access: yes, 2002
We present a class of three-dimensional integrable structures associated with the Darboux-Egoroff metric and classical Euler equations of free rotations of a rigid body. They are obtained as canonical structures of rational Landau-Ginzburg potentials and
A H Zimerman   +18 more
core   +1 more source

Bifurcation Analysis of a Coupled Kuramoto-Sivashinsky- and Ginzburg-Landau-Type Model

open access: yesJournal of Applied Mathematics, 2013
We study the bifurcation and stability of trivial stationary solution (0,0) of coupled Kuramoto-Sivashinsky- and Ginzburg-Landau-type equations (KS-GL) on a bounded domain (0,L) with Neumann's boundary conditions.
Lei Shi
doaj   +1 more source

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