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We report the realization of dynamical localization in a strongly driven two-mode optomechanical system consisting of two coupled cantilevers. Due to the coupling, mechanical oscillations can transport between the cantilevers. However, by…

光学 · 物理学 2017-06-30 Hao Fu , Zhi-cheng Gong , Li-ping Yang , Tian-hua Mao , Chang-pu Sun , Su Yi , Yong Li , Geng-yu Cao

We calculate the magnetic-field dependent nonlinear conductance and noise in a macroscopic inhomogeneous system. If the system does not possess a specific symmetry, the magnetic field induces a nonzero third cumulant of the current even at…

介观与纳米尺度物理 · 物理学 2015-05-18 K. E. Nagaev , O. S. Ayvazyan , N. Yu. Sergeeva , M. Buttiker

A magnetically dominated plasma driven by motions on boundaries at which magnetic field lines are anchored is forced to dissipate the work being done upon it, no matter how small the electrical resistivity. Numerical experiments have…

天体物理学 · 物理学 2007-05-23 Aake Nordlund

For the SPT-type Hall thrusters, the magnetic structure with magnetic conductive columns leads inherent to azimuthally inhomogeneous magnetic configurations. This azimuthal magnetic inhomogeneity may impact electron azimuthal closed-drift…

等离子体物理 · 物理学 2025-10-13 Zhijun Zhou , Xin Luo , Yinjian Zhao , Daren Yu

The purpose of this paper is to improve the modeling of the mixing of chemical elements that occurs in stellar radiation zones. In addition to the classical rotational mixing considered in our previous paper, which results of the combined…

天体物理学 · 物理学 2009-11-11 S. Mathis , J. -P. Zahn

Depth-grading of magnetic anisotropy in perpendicular magnetic media has been predicted to reduce the field required to write data without sacrificing thermal stability. To study this prediction, we have produced Co/Pd multilayers with…

Transport in an ideal two-dimensional quantum spin Hall device is dominated by the counterpropagating edge states of electrons with opposite spins, giving the universal value of the conductance, $2e^2/h$. We study the effect on the…

介观与纳米尺度物理 · 物理学 2011-06-14 Yoichi Tanaka , A. Furusaki , K. A. Matveev

Magnetic axis rotation (MAR) in ferromagnetic (FM) layers is crucial for strain-mediated converse magnetoelectric coupling. Employing the density functional theory (DFT), we computationally study the magnetic anisotropy of selected deformed…

材料科学 · 物理学 2022-12-02 Zefeng Cai , Ben Xu

We study the collective modes of a low-energy continuum model of the quasi-two-dimensional electron liquid in a layer of the organic compound $\alpha-$(BEDT-TTF)$_2$I$_3$ in a perpendicular magnetic field. As testified by zero magnetic…

介观与纳米尺度物理 · 物理学 2015-06-22 Judit Sári , Csaba Toke , Mark O. Goerbig

We use density-functional methods to study the effects of an external magnetic field on two-dimensional quantum dots with a rectangular hard-wall confining potential. The increasing magnetic field leads to spin polarization and formation of…

强关联电子 · 物理学 2009-11-10 E. Räsänen , A. Harju , M. J. Puska , R. M. Nieminen

The effect of suppression of static magnetization of an anisotropic hard superconductor by alternating magnetic field is analyzed theoretically. The magnetic moment suppression dynamics is described with respect to the magnetization loop of…

超导电性 · 物理学 2007-05-23 Alex Levchenko

Using a fact that the effective conductivity sigma_{e} of 2D random heterophase systems in the orthogonal magnetic field is transformed under some subgroup of the linear fractional group, connected with a group of linear transformations of…

无序系统与神经网络 · 物理学 2009-11-10 S. A. Bulgadaev , F. V. Kusmartsev

The magnetocaloric effect is studied at the transition to saturation in the antiferromagnetic spin-1/2 Heisenberg model on the simplest two-dimensional lattices, namely the square and the triangular lattice. Numerical results are presented…

强关联电子 · 物理学 2007-05-23 A. Honecker , S. Wessel

We study an anisotropic two-dimensional non-Hermitian Lieb lattice, where the staggered gain and loss present in the horizontal and vertical directions, respectively. The intra-cell nonreciprocal coupling generates magnetic flux enclosed in…

介观与纳米尺度物理 · 物理学 2021-11-02 L. C. Xie , H. C. Wu , X. Z. Zhang , L. Jin , Z. Song

We study the effect of magnetic scattering on transport in a system with strong structural disorder, using exact finite size calculation of the low frequency optical conductivity. At weak electron-spin coupling spin disorder leads to a…

无序系统与神经网络 · 物理学 2009-11-10 Sanjeev Kumar , Pinaki Majumdar

We present a dynamical mean-field study of antiferromagnetic magnons in one-, two- and three-orbital Hubbard model of square and bcc cubic lattice at intermediate coupling strength. Weinvestigate the effect of anisotropy introduced by an…

强关联电子 · 物理学 2021-09-10 A. Niyazi , D. Geffroy , J. Kunes

A Kubo inspired formalism is proposed to compute the longitudinal and transverse dynamical conductivities of an electron in a plane (or a gas of electrons at zero temperature) coupled to the potential vector of an external local magnetic…

介观与纳米尺度物理 · 物理学 2009-10-28 Jean Desbois , Stéphane Ouvry , Christophe Texier

We show that the RMS fluctuation of the antisymmetric part of the Hall conductance of a planar mesoscopic metal in a random magnetic field with zero average is universal, of the order of $e^2/h$, independent of the amplitude of the random…

凝聚态物理 · 物理学 2009-10-22 K. Chaltikian , L. Pryadko , S. C. Zhang

Magnetic field are transported and tangled by turbulence, even as they lose identity due to nonideal or resistive effects. On balance field lines undergo stretch-twist-fold processes. The curvature field, a scalar that measures the tangling…

The density of states of a 2D d-wave superconductor in the vortex state with applied magnetic field $\bf H$ in the plane is shown to exhibit fourfold oscillations as a function of the angle of the field with respect to the crystal axes. We…

超导电性 · 物理学 2007-05-23 I. Vekhter , P. J. Hirschfeld , J. P. Carbotte , E. J. Nicol
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