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  Quanty for core level spectroscopy - excitons, resonances and band excitations in time and frequency domain

Haverkort, M. W. (2016). Quanty for core level spectroscopy - excitons, resonances and band excitations in time and frequency domain. Journal of Physics: Conference Series, 712: 012001, pp. 1-6. doi:10.1088/1742-6596/712/1/012001.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-3E84-B Version Permalink: http://hdl.handle.net/21.11116/0000-0001-2965-0
Genre: Journal Article

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Haverkort, Maurits W.1, Author              
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1Maurits Haverkort, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863455              

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 Abstract: Depending on the material and edge under consideration, core level spectra manifest themselves as local excitons with multiplets, edge singularities, resonances, or the local projected density of states. Both extremes, i.e., local excitons and non-interacting delocalized excitations are theoretically well under control. Describing the intermediate regime, where local many body interactions;Hid band-formation are equally important is a challenge. Here we discuss how Quanty, a versatile quantum many body script language, can be used to calculate a variety of different core level spectroscopy types on solids and molecules, both in the frequency as well as the time domain. The flexible nature of Quanty allows one to choose different approximations for different edges and materials. For example, using a newly developed method merging ideas from density renormalization group and quantum chemistry [1-3], Quanty can calculate excitons, resonances and band-excitations in x-ray absorption, photoemision, x-ray emission, fluorescence yield, non-resonant inelastic x-ray scattering, resonant inelastic x-ray scattering and many more spectroscopy types. Quardy can be obtained from: http://www.quanty.org.

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Language(s): eng - English
 Dates: 2016-12-012016-12-01
 Publication Status: Published in print
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Title: Journal of Physics: Conference Series
Source Genre: Journal
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Publ. Info: Bristol : IOP Publishing
Pages: - Volume / Issue: 712 Sequence Number: 012001 Start / End Page: 1 - 6 Identifier: ISSN: 1742-6588
CoNE: /journals/resource/111097776606042