نتایج جستجو برای: spin coupling

تعداد نتایج: 262545  

2008
Hans-Andreas Engel

Spin Hall effects are a collection of phenomena, resulting from spin-orbit coupling, in which an electrical current flowing through a sample can lead to spin transport in a perpendicular direction and spin accumulation at lateral boundaries. These effects, which do not require an applied magnetic field, can originate in a variety of intrinsic and extrinsic spin-orbit coupling mechanisms and dep...

Journal: :The Astrophysical Journal 2015

Journal: :Magnetic resonance in chemistry : MRC 2004
Ola B Lutnaes Torgeir A Ruden Trygve Helgaker

Density functional theory, in particular, with the Becke-3-parameter-Lee-Yang-Parr (B3LYP) hybrid functional, has been shown to be a promising method for the calculation of indirect nuclear spin-spin coupling constants. However, no systematic investigation has so far been undertaken to evaluate the capability of B3LYP to calculate these coupling constants accurately, taking properly into accoun...

2012
Mintu Porel M. Francesca Ottaviani Steffen Jockusch Nicholas J. Turro V. Ramamurthy

Supramolecular interactions of polynitroxides with c-cyclodextrin (c-CD) were used to control intramolecular electron spin–spin exchange couplings in these stable radicals. In the absence of c-CD, the binitroxide T2 and trinitroxide T3 showed strong spin–spin coupling as evidenced by the high exchange coupling constant of J = 120 MHz for T2 in its EPR spectra. Host/guest complexes are formed up...

2015
Yan-Hua Hou Zhenhua Yu

Successful realization of spin-orbit coupling in atomic gases by the NIST scheme opens the prospect of studying the effects of spin-orbit coupling on many-body physics in an unprecedentedly controllable way. Here we derive the linearized hydrodynamic equations for the normal atomic gases of the spin-orbit coupling by the NIST scheme with zero detuning. We show that the hydrodynamics of the syst...

2015
Kuei Sun Chunlei Qu Chuanwei Zhang

Spin-orbit coupling (SOC) plays a crucial role in many branches of physics. In this context, the recent experimental realization of the coupling between spin and linear momentum of ultracold atoms opens a completely new avenue for exploring new spin-related superfluid physics. Here we propose that another important and fundamental SOC, the coupling between spin and orbital angular momentum (SOA...

Journal: :Advances in Applied Clifford Algebras 2007

Journal: :Physical review letters 2011
Jukka I Väyrynen Teemu Ojanen

We study the effects of a gate-controlled Rashba spin-orbit coupling to quantum spin Hall edge states in HgTe quantum wells. A uniform Rashba coupling can be employed in tuning the spin orientation of the edge states while preserving the time-reversal symmetry. We introduce a sample geometry where the Rashba coupling can be used in probing helicity by purely electrical means without requiring s...

2007
Tudor D. Stanescu Victor Galitski

We study the relaxation of a spin density injected into a two-dimensional electron system with generic spin-orbit interactions. Our model includes the Rashba as well as linear and cubic Dresselhaus terms. We explicitly derive a general spin-charge coupled diffusion equation. Spin diffusion is characterized by just two independent dimensionless parameters, R and D, which control the interplay be...

Journal: :IOSR Journal of Mathematics 2017

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