Results 21 to 30 of about 1,411 (138)

Boundary Effect and Critical Temperature of Two-Band Superconducting FeSe Films

open access: yesCrystals, 2022
Based on two-band Bogoliubov–de Gennes theory, we study the boundary effect of an interface between a two-gap superconductor FeSe and insulator (or vacuum).
Chenxiao Ye, Jiantao Che, Hai Huang
doaj   +1 more source

New 2d N $$ \mathcal{N} $$ = (0, 2) dualities from four dimensions

open access: yesJournal of High Energy Physics, 2020
We propose some new infra-red dualities for 2d N $$ \mathcal{N} $$ = (0, 2) theories. The first one relates a USp(2N) gauge theory with one antisymmetric chiral, four fundamental chirals and N Fermi singlets to a Landau-Ginzburg model of N Fermi and 6N ...
Matteo Sacchi
doaj   +1 more source

Excitations of static isolated fermions in the Higgs phase of gauge Higgs theory

open access: yesSciPost Physics Proceedings, 2022
A spectrum of localized excitations of isolated static fermions has been discovered in several different gauge Higgs theories. In lattice numerical simulations, we show that the charged elementary particles can have the spectrum of excitations in the ...
Kazue Matsuyama, Jeff Greensite
doaj   +1 more source

Landau ordering phase transitions beyond the Landau paradigm

open access: yesPhysical Review Research, 2020
Continuous phase transitions associated with the onset of a spontaneously broken symmetry are thought to be successfully described by the Landau-Ginzburg-Wilson-Fisher theory of fluctuating order parameters.
Zhen Bi, Ethan Lake, T. Senthil
doaj   +1 more source

The supercurrent diode effect and nonreciprocal paraconductivity due to the chiral structure of nanotubes

open access: yesNature Communications, 2023
The phenomenon that critical supercurrents along opposite directions become unequal is called the supercurrent diode effect (SDE). It has been observed in various systems and can often be understood by combining spin-orbit coupling and Zeeman field ...
James Jun He   +2 more
doaj   +1 more source

Mesoscale Domain Evolution Mechanism during Alternating Current (AC) Poling of Relaxor Ferroelectrics

open access: yesAdvanced Functional Materials, EarlyView.
Ferroelectric domain variants that are energetically equivalent are expected to remain preserved during polarization reversal. However, phase‐field simulations reveal that inclined domain walls in relaxor ferroelectrics can undergo irreversible elimination during alternating current poling through a proximity effect driven by long‐range elastic ...
Yuan‐Jie Sun   +2 more
wiley   +1 more source

Towards Ginzburg–Landau Bogomolny Approach and a Perturbative Description of Superconducting Structures

open access: yesQuantum Reports
The Bogomolny approach to the Ginzburg–Landau equations in the context of strong and semi-strong necessary conditions is formulated for various superconducting structures in a quasi-one-dimensional description, considering both flat and curved geometries.
Łukasz T. Stȩpień, Krzysztof Pomorski
doaj   +1 more source

Oscillatory magneto-convection under magnetic field modulation

open access: yesAlexandria Engineering Journal, 2018
In this paper we investigate an oscillatory mode of nonlinear magneto-convection under time dependant magnetic field. The time dependant magnetic field consists steady and oscillatory parts.
Palle Kiran   +2 more
doaj   +1 more source

Thermal‐Driven Diode Polarity Switching From Competing Helical Superconducting States in WTe2/α‐Fe2O3 Heterostructures

open access: yesAdvanced Materials, EarlyView.
A Nb‐proximitized Josephson junction based on a WTe2/α‐Fe2O3 heterostructure exhibits a robust superconducting diode effect with programmable polarity. The diode direction can be trained by magnetic fields and switched by temperature cycling, revealing tunable finite‐momentum pairing states and competing superconducting states in symmetry‐broken ...
Enze Zhang   +9 more
wiley   +1 more source

Fractional Evolution Equation with Nonlocal Multi-Point Condition: Application to Fractional Ginzburg–Landau Equation

open access: yesAxioms
This paper is devoted to studying the existence and uniqueness of mild solutions for semilinear fractional evolution equations with the Hilfer–Katugampola fractional derivative and under the nonlocal multi-point condition.
Ahmed Salem, Rania Al-Maalwi
doaj   +1 more source

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