spin-wave excitation

См. также в других словарях:

• Spin wave — Spin waves are propagating disturbances in the ordering of magnetic materials. These low lying collective excitations occur in magnetic lattices with continuous symmetry. From the equivalent quasiparticle point of view, spin waves are known as… …   Wikipedia

• Spin density wave — (SDW) and charge density wave (CDW) are names for two similar low energy ordered states of solids. Both these states occur at low temperature in anisotropic, low dimensional materials or in metals that have high densities of states at the Fermi… …   Wikipedia

• Spin-statistics theorem — Statistical mechanics Thermodynamics · …   Wikipedia

• Magnonics — is an emerging field of modern magnetism, which can be considered a sub field of modern solid state physics.[1] Magnonics combines waves and magnetism, its main aim is to investigate the behaviour of spin waves in nano structure elements. In… …   Wikipedia

• Quasiparticle — In physics, quasiparticles (and related collective excitations) are emergent phenomena that occur when a microscopically complicated system such as a solid behaves as if it contained different (fictitious) weakly interacting particles in free… …   Wikipedia

• Magnon — There is a place named Magnon in Gabon. A magnon is a collective excitation of the electrons spin structure in a crystal lattice. In contrast, a phonon is a collective excitation of the crystal lattice atoms or ions. In the equivalent wave… …   Wikipedia

• Spontaneous magnetization — is the term used to describe the appearance of an ordered spin state (magnetization) at zero applied magnetic field in a ferromagnetic or ferrimagnetic material below a critical point called the Curie temperature or TC. At temperatures above TC,… …   Wikipedia

• spectroscopy — spectroscopist /spek tros keuh pist/, n. /spek tros keuh pee, spek treuh skoh pee/, n. the science that deals with the use of the spectroscope and with spectrum analysis. [1865 70; SPECTRO + SCOPY] * * * Branch of analysis devoted to identifying… …   Universalium

• Photon — This article is about the elementary particle of light. For other uses, see Photon (disambiguation). Photon Photons emitted in a coherent beam from a laser Composition Elementary particle …   Wikipedia

• analysis — /euh nal euh sis/, n., pl. analyses / seez /. 1. the separating of any material or abstract entity into its constituent elements (opposed to synthesis). 2. this process as a method of studying the nature of something or of determining its… …   Universalium

• Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics       Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity.       Computer scientist Manindra Agrawal of the… …   Universalium