A4 Conference proceedings

Electronic Structure Probed with Positronium: Theoretical Viewpoint


Open Access publication


Publication Details

Authors: Kuriplach Jan, Barbiellini Bernardo

Publisher: AIP Publishing

Publication year: 2018

Language: English

Related journal or series: AIP Conference Proceedings

Volume number: 1970

Start page: 1

End page: 8

Number of pages: 8

ISBN: 978-0-7354-1677-2

ISSN: 0094-243X

JUFO level of this publication: 1

Digital Object Identifier (DOI): http://dx.doi.org/10.1063/1.5040218

Permanent website address: https://aip.scitation.org/doi/pdf/10.1063/1.5040218

Open Access: Open Access publication


Abstract







We inspect carefully how the positronium can be used to study the electronic structure of materials. Recent combined
experimental and computational study [A.C.L. Jones et al., Phys. Rev. Lett. 117, 216402 (2016)] has shown that the positronium
affinity can be used to benchmark the exchange-correlation approximations in copper. Here we investigate whether an improvement
can be achieved by increasing the numerical precision of calculations and by employing the strongly constrained and appropriately
normed (SCAN) scheme, and extend the study to other selected systems like aluminum and high entropy alloys. From the method-
ological viewpoint, the computations of the positronium affinity are further refined and an alternative way of determining the
electron chemical potential using charged supercells is examined.





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Last updated on 2019-13-03 at 12:00