Crystal field excitation is the electronic transition of an electron between two orbitals of an atom that is situated in a crystal field environment.[1] They are often observed in coordination complexes of transition metals.[2] Some examples of crystal field excitations are dd-transitions on a copper atom that is surrounded by an octahedron of oxygen atoms, or ff-transitions on the uranium atom in uranium antimonide.[3]
^Rückamp, R; Benckiser, E; Haverkort, M W; Roth, H; Lorenz, T; Freimuth, A; Jongen, L; Möller, A; Meyer, G; Reutler, P; Büchner, B; Revcolevschi, A; Cheong, S-W; Sekar, C; Krabbes, G (2005-06-17). "Optical study of orbital excitations in transition-metal oxides". New Journal of Physics. 7 (1): 3. arXiv:cond-mat/0503405. Bibcode:2005NJPh....7..144R. doi:10.1088/1367-2630/7/1/144. ISSN 1367-2630.
^"A. Introduction to Crystal Field Theory". Chemistry LibreTexts. 2016-08-21. Retrieved 2024-02-02.
^Furrer, A. (2012-12-06). Crystal Field Effects in Metals and Alloys. Springer Science & Business Media. p. 220. ISBN 978-1-4615-8801-6.
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crystalfield theory (CFT) describes the breaking of degeneracies of electron orbital states, usually d or f orbitals, due to a static electric field...
independent. Usually, an elementary excitation is called a "quasiparticle" if it is a fermion and a "collective excitation" if it is a boson. However, the...
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to study atomic and molecular motion as well as magnetic and crystalfieldexcitations. It distinguishes itself from other neutron scattering techniques...
The optical excitation pulses that generate phonon-polaritons, in the top left and bottom right of the crystal, enter normal to the crystal face (into...
separated from the excitation plane by a distance given by the tip length, and no background plays any role in the Raman excitation of the molecule. Raman...
large density of excitation, the cooperative quenching (cross-relaxation) reduces the efficiency of the laser action. The medical field has some use for...
mechanical strain resulting from an applied electric field. For example, lead zirconate titanate crystals will generate measurable piezoelectricity when their...
field energy is reabsorbed, while the remainder is radiated as EM waves. Recently, a graphene-based Bragg grating (one-dimensional photonic crystal)...
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densities of states in crystalline and disordered systems, and crystalfieldexcitations in magnetic materials. Merlin is a neutron spectrometer with a...
graphene-based Bragg grating (one-dimensional photonic crystal) and demonstrated that it supports excitation of surface electromagnetic waves in the periodic...
Wong, G. K. L.; et al. (2012). "Excitation of Orbital Angular Momentum Resonances in Helically Twisted Photonic Crystal Fiber". Science. 337 (6093): 446–449...
thermal fluctuation or excitation, creating a mobile electron-hole pair (exciton). If there is a voltage gradient (electric field) in the semiconductor...
infrared are due to modes of vibrational excitation in water vapor. However, at energies too low to excite water vapor, the atmosphere becomes transparent...
of electromagnetic waves with an electric or magnetic dipole-carrying excitation.[example needed] They are an expression of the common quantum phenomenon...
usually sharper than the excitation spectrum, and it is of a longer wavelength and correspondingly lower energy. Excitation energies range from ultraviolet...
the excitation light from reaching the observer or the detector, filter sets of high quality are needed. These typically consist of an excitation filter...
introducing impurities ("doping") into the crystal structure. When two differently doped regions exist in the same crystal, a semiconductor junction is created...
non-zero band gap that behaves as an insulator at T=0K, but allows thermal excitation of electrons into its conduction band at temperatures that are below its...
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