Results 161 to 170 of about 428,741 (193)
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Spin-phonon interactions in classical spin systems
Solid State Communications, 1969Abstract A paramagnetic lattice system is discussed where spin-phonon interactions are present, and where the spin operators are treated classically. It is found that the spin-phonon coupling gives rise to an effective exchange coupling between spins.
N.W. Dalton, D.W. Wood
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Classical relativistic spinning particles
Journal of Mathematical Physics, 1989An elementary particle is defined as a mechanical system whose kinematical space is a homogeneous space of the Poincaré group. Lagrangians for describing these systems depend on higher-order derivatives and some of them are analyzed. For bradyons the Lagrangian depends on the acceleration and angular velocity of the particle and is characterized by two
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Physical Review Letters, 1982
A simple model of a classical spin-glass with weakly correlated disorder is presented. It includes both randomness and frustration, and is exactly soluble, but its solution can be obtained without replicas. Among the several phases of the model a mixed phase is found where spin-glass and ferromagnetism coexist. In addition the characteristic S shape of
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A simple model of a classical spin-glass with weakly correlated disorder is presented. It includes both randomness and frustration, and is exactly soluble, but its solution can be obtained without replicas. Among the several phases of the model a mixed phase is found where spin-glass and ferromagnetism coexist. In addition the characteristic S shape of
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Classical spins in van Hove superconductors
Physical Review B, 1996We show the existence of the localized excited state in the energy gap of a superconductor described by the van Hove scenario, given by the interaction of the electrons (holes) with a classical spin.
, Tifrea, , Crisan
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On a classical spin glass model
Zeitschrift für Physik B Condensed Matter, 1983A simple, exactly soluble, model of a spin-glass with weakly correlated disorder is presented. It includes both randomness and frustration, but its solution can be obtained without replicas. As the temperature T is lowered, the spin-glass phase is reached via an equilibrium phase transition at T=Tf.
van Hemmen, JL +2 more
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Spin in Classical and Quantum Theory
Physical Review, 1961The classical equations of motion of a charged point-particle with intrinsic spin under the influence of an external electromagnetic field are restated and compared with the Heisenberg equations of motion derived from the Dirac theory. The partition of angular momentum between particle and field in the classical theory is contrasted to the Dirac theory
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THE QUANTIZATION OF CLASSICAL SPIN THEORY
Canadian Journal of Physics, 1953The antisymmetric spin tensor of rank two used to describe the rotational motion of a particle is assumed to satisfy the constraint condition that the velocity 4-vector is orthogonal to it. Since the dipole moment is proportional to the spin tensor, this condition leads always to a purely magnetic dipole in the rest system of the particle. Frenkel has
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Oxide spin-orbitronics: spin–charge interconversion and topological spin textures
Nature Reviews Materials, 2021Felix Trier, Paul Noël, Joo-Von Kim
exaly
Classical relativistic dynamics of « spin » particles
Il Nuovo Cimento, 1963By means of a variational principle together with a principle of total angular momentum, the general equations of motion of a particle with internal spin are deduced. This procedure gives rise to a differential equation which the components of the spin angular momentum tensor must satisfy.
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Quantum guidelines for solid-state spin defects
Nature Reviews Materials, 2021Gary Wolfowicz +2 more
exaly