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We study the onset and characteristics of vortices in complex (dusty) plasmas using two-dimensional simulations in a setup modeled after the PK-3 Plus laboratory. A small number of microparticles initially self-arranges in a monolayer…

Vortex penetration and flux relaxation phenomenon carry the information about the pinning ability, and consequently current-carrying ability, of a type-II superconductor. However, the theoretical descriptions to these phenomena are…

超导电性 · 物理学 2011-06-06 Rongchao Ma

We study a holographic model with vector condensate by coupling the anti-de Sitter gravity to an Abelian gauge field and a charged vector field in $(3+1)$ dimensional spacetime. In this model there exists a non-minimal coupling of the…

高能物理 - 理论 · 物理学 2014-01-27 Rong-Gen Cai , Song He , Li Li , Li-Fang Li

Polar activity is shown here to induce a progressive local deformation of linear polymer chains, making a clear distinction between head and tail, while the overall chain conformation gets more compact. This breakdown of self-similarity,…

软凝聚态物质 · 物理学 2024-04-17 Andrés R. Tejedor , Jorge Ramírez , Marisol Ripoll

Charged particles in a magnetosphere are spontaneously attracted to a planet while increasing their kinetic energy via inward diffusion process. A constraint on particles' micro-scale adiabatic invariants restricts the class of motions…

等离子体物理 · 物理学 2016-11-08 Y. Ushida , Y. Kawazura , N. Sato , Z. Yoshida

In two-dimensional (2D) inviscid incompressible flow, low background vorticity distribution accelerates intense vortices (clumps) to merge each other and to array in the symmetric pattern which is called ``vortex crystals''; they are…

统计力学 · 物理学 2009-11-10 Takeshi Yoshida , Mitsusada M. Sano

In addition to Anderson and Mott localization, intrinsic phase separation has long been advocated as the third fundamental mechanism controlling the doping-driven metal-insulator transitions. In electronic system, where charge neutrality…

强关联电子 · 物理学 2011-05-18 Hanna Terletska , Vladimir Dobrosavljević

We measured and compared the electric field vs current density characteristics in the vortex state of two amorphous Nb0.7Ge0.3 microbridges, with and without a line of submicron holes patterned along the sample axis. The power dissipation…

超导电性 · 物理学 2007-05-23 J. Bentner , D. Babic , C. Suergers , C. Strunk

We have combined high resolution magneto-optical imaging with an ultra-fast heating/cooling technique to measure the movement of individual vortices in a superconducting film. The motion took place while the film was heated close to $T_c$,…

超导电性 · 物理学 2011-09-13 Daniel Golubchik , Emil Polturak , Gad Koren

We introduce a new method of statistical analysis to characterise the dynamics of turbulent fluids in two dimensions. We establish that, in equilibrium, the vortex distributions can be uniquely connected to the temperature of the vortex…

We investigate the one-dimensional Hubbard model with an additional bond-charge interaction, recently considered in the description of compounds that exhibit strong 1D features above the temperature of ordered phases. The partition function…

强关联电子 · 物理学 2009-11-07 Fabrizio Dolcini , Arianna Montorsi

Extensive work has shown that irradiation with 0.8 GeV protons can produce randomly oriented columnar defects (CD's) in a large number of HTS materials, specifically those cuprates containing Hg, Tl, Pb, Bi, and similar heavy elements.…

Studies involving vortex dynamics and their interaction with pinning centers are an important ingredient to reach higher critical currents in superconducting materials. The vortex distribution around arrays of engineered defects, such as…

We model a vortex system in a sample with bulk pinning and superficial pinning generated by a magnetic decoration. We perform a sequence of finite temperature numerical experiments in which external forces are applied to obtain a…

超导电性 · 物理学 2009-11-10 M. F. Laguna , P. S. Cornaglia , C. A. Balseiro

We study the vortex pinning effect on the vortex lattice structure of the rotating two-component Bose-Einstein condensates (BECs) in the presence of impurities or disorder by numerically solving the time-dependent coupled Gross-Pitaevskii…

量子气体 · 物理学 2024-07-02 Dibyendu Kuiri , Mithun Thudiyangal , Bishwajyoti Dey

We theoretically examine the vortex states of a gas of trapped quasi-two-dimensional ultracold bosons subject to a density-dependent gauge potential, realizing an effective nonlinear rotation of the atomic condensate, which we also show is…

量子气体 · 物理学 2020-10-28 Matthew Edmonds , Muneto Nitta

The pinning of vortex lines by an array of nanoparticles embedded inside superconductors has become the most efficient practical way to achieve high critical currents. In this situation pinning occurs via trapping of the vortex-line…

超导电性 · 物理学 2011-10-07 Alexei E. Koshelev , Alejandro B. Kolton

We demonstrate that there is a long-range vortex-vortex attraction in ferromagnetic superconductors due to polarization of the magnetic moments. Vortex clusters are then stabilized in the ground state for low vortex densities. The motion of…

超导电性 · 物理学 2012-11-29 Shi-Zeng Lin , Lev N. Bulaevskii , Cristian D. Batista

We outline a general approach to the computation of transport properties of interacting systems at low temperetures and frequencies. We show that if the fixed point and the irrelevant operators around it are known, then by studying the…

强关联电子 · 物理学 2009-11-10 Natan Andrei , Efrat Shimshoni , Achim Rosch

Destruction of the vortex lattice by random point pinning is considered as a mechanism of the ``second peak'' transition observed experimentally in weakly coupled layered high temperature superconductors. The transition field separating the…

超导电性 · 物理学 2009-10-31 A. E. Koshelev , V. M. Vinokur