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The low-energy electronic structure of icosahedral fullerenes is studied within the field-theory model. In the field model, the pentagonal rings in the fullerene are simulated by two kinds of gauge fields. The first one, non-abelian field,…

材料科学 · 物理学 2007-06-13 D. V. Kolesnikov , V. A. Osipov

The spin polarized charge transport is systematically analyzed as a thermally driven stochastic process. The approach is based on Kramers' equation describing the semiclassical motion under the inclusion of stochastic and damping forces.…

统计力学 · 物理学 2009-11-13 Michael Schulz , Steffen Trimper

The dependence of the particle rotation frequency on the particle orbit perturbations is found. The exact equation of spin motion in the cylindrical coordinate system is derived. The calculated formula for the frequency of g-2 precession is…

高能物理 - 唯象学 · 物理学 2017-08-23 A. J. Silenko

A research on a possibility of trapping a particle with permanent electric dipole in an electrostatic field has been conducted. For cylindrical coaxial electrodes, Keplerian orbits for some particles were revealed. The exact criterion of…

原子物理 · 物理学 2019-02-27 Michal Špaček , Vojtěch Petráček

A many body Hamiltonian comprising pairing, quadrupole-quadrupole and spin-spin interaction is treated within a projected spherical basis with the aim of describing the detailed structure of the magnetic states of orbital and spin-flip…

核理论 · 物理学 2009-11-07 A. A. Raduta , A. Escuderos , E. Moya de Guerra

We studied the magnetoresistance due to a spin spiral by solving the Boltzmann equation. The scattering rates of conduction electrons are calculated by using the non-perturbative wave function of the conduction electrons and the…

介观与纳米尺度物理 · 物理学 2010-01-21 Tomohiro Taniguchi , Hiroshi Imamura

We calculate the rate of decrease of the expectation value of the transverse component of spin for spin-1/2 particles in a magnetic field with a spatial gradient, to determine the conditions under which a previous classical description is…

量子物理 · 物理学 2009-11-07 Leon Heller

A decomposition of the angular momentum of the classical electromagnetic field into orbital and spin components that is manifestly gauge invariant and general has been obtained. This is done by decomposing the electric field into its…

经典物理 · 物理学 2007-05-23 A. M. Stewart

Pulsed electrically-detected magnetic resonance of phosphorous (31P) in bulk crystalline silicon at very high magnetic fields (B > 8.5 T) and low temperatures (T = 2.8 K) is presented. We find that the spin-dependent capture and reemission…

量子物理 · 物理学 2009-09-25 G. W. Morley , D. R. McCamey , H. A. Seipel , L. -C. Brunel , J. van Tol , C. Boehme

We show an application of the functional-renormalization-group aided density functional theory to the homogeneous electron gas with arbitrary spin polarization, which gives the energy density functional in the local spin density…

强关联电子 · 物理学 2022-01-12 Takeru Yokota , Tomoya Naito

We model the overall shape of an accretion disc in a semi-detached binary system in which mass is transfered on to a spinning black hole the spin axis of which is misaligned with the orbital rotation axis. We assume the disc is in a steady…

高能天体物理现象 · 物理学 2015-05-13 Rebecca G. Martin , J. E. Pringle , Christopher A. Tout

We demonstrate a method to quantify and manipulate nuclear spin decoherence mechanisms that are active in zero to ultralow magnetic fields. These include: (i) non-adiabatic switching of spin quantization axis, due to residual background…

化学物理 · 物理学 2022-06-28 Sven Bodenstedt , Morgan W. Mitchell , Michael C. D. Tayler

Spin relaxation torque ${\cal T}$ in uniform metallic ferromagnets with the spin-orbit interaction arising from random impurities is calculated microscopically. ${\cal T}$ is shown to be written by spatial derivatives of the electric field,…

介观与纳米尺度物理 · 物理学 2015-05-18 Noriyuki Nakabayashi , Akihito Takeuchi , Kazuhiro Hosono , Katsuhisa Taguchi , Gen Tatara

We experimentally demonstrate that the decoherence of a spin by a spin bath can be completely eliminated by fully polarizing the spin bath. We use electron paramagnetic resonance at 240 gigahertz and 8 Tesla to study the spin coherence time…

量子物理 · 物理学 2009-11-13 Susumu Takahashi , Ronald Hanson , Johan van Tol , Mark S. Sherwin , David D. Awschalom

Using time-resolved Faraday rotation, the drift-induced spin-orbit Field of a two-dimensional electron gas in an InGaAs quantum well is measured. Including measurements of the electron mobility, the Dresselhaus and Rashba coefficients are…

介观与纳米尺度物理 · 物理学 2009-01-06 M. Studer , S. Schön , K. Ensslin , G. Salis

We study the decoherence of massive fields during inflation based on the Zurek's density matrix approach. With the cubic interaction between inflaton and massive fields, the reduced density matrix for the massive fields can be calculated in…

高能物理 - 理论 · 物理学 2016-10-24 Junyu Liu , Chon-Man Sou , Yi Wang

We suggest a long-lived spin polarization structure, a radial spin helix, and study its relaxation dynamics. For this purpose, starting with a simple and physically clear consideration of spin transport, we derive a system of equations for…

介观与纳米尺度物理 · 物理学 2010-10-01 Yuriy V. Pershin , Valeriy A. Slipko

In this work, we study circular motions of charged particles and their polarized images around the Kerr black hole immersed in a weak magnetic field. We pay special attention to the case that both the magnetic field and the charge-to-mass…

广义相对论与量子宇宙学 · 物理学 2023-07-19 Tsai-Chen Lee , Zezhou Hu , Minyong Guo , Bin Chen

I extend and update earlier work, summarised in [1], whereby the invariant polarisation-tensor field (ITF) for deuterons in storage rings was introduced to complement the invariant spin field (ISF). Taken together, the ITF and the ISF…

加速器物理 · 物理学 2016-02-05 D. P. Barber

We study in theory the generation and detection of electron spin coherence in nonlinear optical spectroscopy of semiconductor quantum dots doped with single electrons. In third-order differential transmission spectra, the inverse width of…

介观与纳米尺度物理 · 物理学 2009-11-11 Ren-Bao Liu , S. E. Economou , L. J. Sham , D. G. Steel