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Vortices are topological objects carrying quantized orbital angular momentum and have been widely studied in many physical systems for their applicability in information storage and processing. In systems with spin degree of freedom the…

介观与纳米尺度物理 · 物理学 2020-05-12 Matthias Pukrop , Stefan Schumacher , Xuekai Ma

We report a crucial experimental test of the present models of the peak effect in weakly disordered type-II superconductors. Our results favor the scenario in which the peak effect arises from a crossover between the Larkin pinning length…

超导电性 · 物理学 2007-05-23 J. E. Berger , S. J. Smullin , W. L. Karlin , X. S. Ling , D. E. Prober

The zero-temperature critical state of the two-dimensional gauge glass model is investigated. It is found that low-energy vortex configurations afford a simple description in terms of gapless, weakly interacting vortex-antivortex pair…

无序系统与神经网络 · 物理学 2009-11-10 Lei-Han Tang , Peiqing Tong

The discovery that spin-orbit coupling can generate a new state of matter in the form of quantum spin-Hall (QSH) insulators has brought topology to the forefront of condensed matter physics. While QSH states from spin-orbit coupling can be…

强关联电子 · 物理学 2019-06-18 Yuhai Liu , Zhenjiu Wang , Toshihiro Sato , Martin Hohenadler , Chong Wang , Wenan Guo , Fakher F. Assaad

Moir\'e systems displaying flat bands have emerged as novel platforms to study correlated electron phenomena. Insulating and superconducting states appear upon doping magic angle twisted bilayer graphene (TBG), and there is evidence of…

强关联电子 · 物理学 2021-05-17 M. J. Calderón , E. Bascones

We observe the transient formation of a ringed pattern state during spin-up of an evaporating fluid on a time scale of order a few Ekman spin-up times. The ringed state is probed using infrared thermometry and particle image velocimetry and…

流体动力学 · 物理学 2015-05-18 Jin-Qiang Zhong , M. D. Patterson , J. S. Wettlaufer

Within the Ginzburg-Landau model we study the critical field and temperature enhancement for crossing superconducting channels formed either along the sample edges or domain walls in thin-film magnetically coupled superconducting -…

Cavities play a fundamental role in wave phenomena from quantum mechanics to electromagnetism and dictate the spatiotemporal physics of lasers. In general, they are constructed by closing all "doors" through which waves can escape. We…

We study numerically the motion of vortices in two-dimensional arrays of resistively shunted Josephson junctions. An extra vortex is created in the ground states by introducing novel boundary conditions and made mobile by applying external…

统计力学 · 物理学 2009-11-11 Jong Soo Lim , M. Y. Choi , Beom Jun Kim , J. Choi

We show that the four-dimensional U(1) gauge theory in the continuum formulation has a confining phase (exhibiting area law of the Wilson loop) in the strong coupling region above a critical coupling $g_c$. This result is obtained by taking…

高能物理 - 理论 · 物理学 2009-10-31 Kei-Ichi Kondo

Using a generalized reciprocity relation between charge and vortex conductivities at complex frequencies in two space dimensions, we identify the capacitance in the insulating phase as a measure of vortex condensate stiffness. We compute…

强关联电子 · 物理学 2015-01-07 Snir Gazit , Daniel Podolsky , Assa Auerbach

We present new necessary and sufficient conditions for the existence of fixed points in a finite system of coupled phase oscillators on a complete graph. We use these conditions to derive bounds on the critical coupling.

动力系统 · 数学 2009-11-13 Mark Verwoerd , Oliver Mason

We present simulations of the transport properties of superconductors at the transition from the Bragg glass (BG) to the vortex glass (VG) phase. We study the frustrated anisotropic 3D XY model with point disorder, which has been shown to…

超导电性 · 物理学 2009-11-10 Alexander Hernandez , Daniel Dominguez

Tamm polaritons (TPs) are formed at the interface between two semi-infinite periodic dielectric structures (Bragg mirrors) or other reflectors. Contrary to usual surface polaritons, TPs exist inside the "light cone", even though their…

介观与纳米尺度物理 · 物理学 2019-03-29 Jorge M. S. S. Silva , Mikhail I. Vasilevskiy

We present a spatio-temporal mechanism for producing 2D optical rogue waves in the presence of a turbulent state with creation, interaction and annihilation of optical vortices. Spatially periodic structures with bound phase lose stability…

光学 · 物理学 2016-02-12 Christopher J. Gibson , Alison M. Yao , Gian-Luca Oppo

We identify a phase transition in the vortex system of a high-temperature superconductor with nano-columnar stacks of precipitates as strong vortex pinning centers. Above a particular, temperature-dependent field $B_X(T)$ the vortex…

超导电性 · 物理学 2015-05-30 Yuri L. Zuev , Sung Hun Wee , David K. Christen

We discuss the role of dislocation assemblies such as grain boundaries in the dynamic response of a driven vortex lattice. We simulate the depinning of a field-cooled vortex polycrystal and observe a general enhancement of the critical…

无序系统与神经网络 · 物理学 2009-11-13 Paolo Moretti , M. -Carmen Miguel

The gauge glass model offers an interesting example of a randomly frustrated system with a continuous O(2) symmetry. In two dimensions, the existence of a glass phase at low temperatures has long been disputed among numerical studies. To…

无序系统与神经网络 · 物理学 2015-05-14 Lei-Han Tang

The center vortex model of quantum chromodynamic states that vortices, closed color-magnetic flux, percolate the vacuum. Vortices are seen as the relevant excitations of the vacuum, causing confinement and dynamical chiral symmetry…

高能物理 - 格点 · 物理学 2019-12-06 Rudolf Golubich , Manfried Faber

We present a theory of the critical interlayer tunneling current in a disordered quantum Hall bilayer at total filling factor one, allowing for the effect of static vortices. In agreement with recent experiments [Phys. Rev. B 80, 165120…

介观与纳米尺度物理 · 物理学 2011-02-18 P. R. Eastham , N. R. Cooper , D. K. K. Lee