Homocystinuria 发表于 2025-3-25 06:52:24
Magnetic Properties of Layered Transition Metal Compounds马具 发表于 2025-3-25 09:45:16
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0924-6339 ith restricted dimensionality d as an object that is infinite only in one or two spatial directions (d = 1 and 2). Such a definition comprises isolated single chains or layers, but also fibres and thin layers (films) of varying but finite thickness. Clearly, a multitude of physical phenomena, notabl一瞥 发表于 2025-3-25 17:33:44
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Spin Waves in Two-Dimensional Magnetic Systems: Theory And Applications,-wavelength modes of these precessions have energies near zero. These concepts were first introduced by Bloch . Presently, assuming the presence of translational invariance, we commonly refer to these motions as spin waves, or the quantum-mechanical equivalent, magnons.无孔 发表于 2025-3-26 02:31:20
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Phase Transitions in Quasi Two-Dimensional Planar Magnets,be described by the general Hamiltonian: .. where the superscripts ⊥ and ∥ are defined relative to the z-axis (perpendicular to the XY plane) and J. and J. represent the (anisotropic) exchange interaction between spins . and ..拒绝 发表于 2025-3-26 10:22:10
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L. J. de Jonghon of this field: the selection, by the Japanese Fifth Generation Project, of Prolog and of the relational data model as the basis for the development of new machine archi tectures; the focusing of research in database theory on logic queries and on recursive query processing; and the pragmatic, ap隼鹰 发表于 2025-3-26 20:05:43
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