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Spin hydrodynamic coupling is a recently discovered method to directly generate electricity from an electrically conducting fluid flow in the absence of Lorentz forces. This method relies on a collective coupling of electron spins - the…

流体动力学 · 物理学 2020-07-03 Hamid Tabaei Kazerooni , Alexander Thieme , Jörg Schumacher , Christian Cierpka

We theoretically investigate a spin-mediated conversion from fluid dynamics to voltage, known as spin hydrodynamic generation (SHDG), in oscillatory and transient unsteady flows. We consider unsteady flows of liquid metal between two…

流体动力学 · 物理学 2023-03-22 Takumi Funato , Mamoru Matsuo

Liquid electricity generator and hydrovoltaic technology have received numerous attentions, which can be divided into horizontal movement generator and vertical movement generator. The horizontal movement generator is limited for powering…

Spin-current generation by fluid motion is theoretically investigated. Based on quantum kinetic theory, the spin-diffusion equation coupled with fluid vorticity is derived. We show that spin currents are generated by the vorticity gradient…

介观与纳米尺度物理 · 物理学 2017-07-12 Mamoru Matsuo , Yuichi Ohnuma , Sadamichi Maekawa

The generation, manipulation and detection of spin-polarized electrons in nanostructures define the main challenges of spin-based electronics[1]. Amongst the different approaches for spin generation and manipulation, spin-orbit coupling,…

介观与纳米尺度物理 · 物理学 2009-11-11 Sergio O. Valenzuela , M. Tinkham

Electron hydrodynamics is currently known to emerge only when electron-electron interaction dominates over the momentum-nonconserving scatterings of electrons, where the electron transport is described by a hydrodynamic equation. Here we…

介观与纳米尺度物理 · 物理学 2023-05-25 Junji Fujimoto , Wataru Koshibae , Sadamichi Maekawa

The spin Hall effect does not generally result in a charge Hall voltage. We predict that in systems with inhomogeneous electron density in the direction perpendicular to main current flow, the spin Hall effect is instead accompanied by a…

介观与纳米尺度物理 · 物理学 2008-03-23 Yu. V. Pershin , M. Di Ventra

We consider spin-vorticity coupling - the generation of spin polarization by vorticity - in viscous two-dimensional electron systems with spin-orbit coupling. We first derive hydrodynamic equations for spin and momentum densities in which…

介观与纳米尺度物理 · 物理学 2019-02-18 Ruben J. Doornenbal , Marco Polini , R. A. Duine

We develop a hydrodynamic theory for an electron system exhibiting the anomalous Hall effect, and show that an additional anomalous Hall effect is induced by a vorticity generated near boundaries. We calculate the momentum flux and force…

介观与纳米尺度物理 · 物理学 2021-07-28 Hiroshi Funaki , Riki Toshio , Gen Tatara

We demonstrate that spin current can be generated by an ac voltage in a one-channel quantum wire with strong repulsive electron interactions in the presence of a non-magnetic impurity and uniform static magnetic field. In a certain range of…

介观与纳米尺度物理 · 物理学 2007-08-28 Bernd Braunecker , D. E. Feldman , Feifei Li

Pure spin currents are measured in micron-wide channels of GaAs two-dimensional electron gas (2DEG). Spins are injected and detected using quantum point contacts, which become spin polarized at high magnetic field. High sensitivity to the…

介观与纳米尺度物理 · 物理学 2009-11-13 S. M. Frolov , A. Venkatesan , W. Yu , W. Wegscheider , J. A. Folk

The electric Hall effect (EHE) is a newly identified Hall effect characterized by a perpendicular electric field inducing a transverse charge current in two-dimensional (2D) systems. Here, we propose a spin and valley version of EHE. We…

介观与纳米尺度物理 · 物理学 2026-03-25 W. Zeng

Magnetic-field-induced phase transitions were studied with a two-dimensional electron AlGaAs/GaAs system. The temperature-driven flow diagram shows the features of the $\Gamma$(2) modular symmetry, which includes distorted flowlines and…

介观与纳米尺度物理 · 物理学 2007-05-23 C. F. Huang , Y. H. Chang , H. H. Cheng , Z. P. Yang , H. D. Yeh , C. H. Hsu , C. -T. Liang , D. R. Hang , H. H. Lin

Spin and charge currents can be generated by an ac voltage through a one-channel quantum wire with strong electron interactions in a static uniform magnetic field. In a certain range of low voltages, the spin current can grow as a negative…

介观与纳米尺度物理 · 物理学 2009-11-11 Bernd Braunecker , D. E. Feldman

We report on a numerical study of axisymmetric flow of liquid metal in a circular duct with rectangular cross-section. The flow is forced through the combination of an axial magnetic field and a radial current. Sweeping a wide range of…

流体动力学 · 物理学 2020-04-08 A. Poyé , O. Agullo , N. Plihon , W. J. T. Bos , V. Desangles , G. Bousselin

We construct multi-mode viscous hydrodynamics for one dimensional spinless electrons. Depending on the scale, the fluid has six (shortest lengths), four (intermediate, exponentially broad regime), or three (asymptotically long scales)…

介观与纳米尺度物理 · 物理学 2021-06-24 I. V. Protopopov , R. Samanta , A. D. Mirlin , D. B. Gutman

In nonlinear systems, small perturbations are conventionally attributed to negligible nonlinearity, justifying linear approximations. Here, we uncover a notable exception to this paradigm in an electrokinetic (EK) flow. Using a novel dual…

流体动力学 · 物理学 2026-04-16 Jin'an Pang , Guangyin Jing , Xiaoqiang Feng , Kaige Wang , Wei Zhao

Electrified sessile droplets on solid surfaces are ubiquitous in nature as well as several practical applications. Although the influence of electric field on pinned sessile droplets and soap bubbles have been investigated experimentally,…

流体动力学 · 物理学 2023-12-05 Dipin S. Pillai , Kirti Chandra Sahu

At each of the boundaries of the two-dimensional (2D) rectangular conductor parallel to the electric current there arises a stripe with an electric field transverse to the current and a 100% electron spin polarization. The two stripes have…

介观与纳米尺度物理 · 物理学 2011-07-18 Y. B. Lyanda-Geller

This study presents generalization of the Landau hydrodynamic solution for multiparticle production applied to non-central relativistic heavy ion collisions. Obtained results shows longitudinal scaling of elliptic flow $v_2$ as a function…

高能物理 - 唯象学 · 物理学 2011-10-17 Karolis Tamosiunas
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