Spectral and optical properties of Ag3Au(Se2,Te2) and dark matterdetection
dc.contributor.author | Sánchez Martínez, M. Á. | |
dc.contributor.author | Robredo Magro, Iñigo | |
dc.contributor.author | Bidaurrazaga Barrueta, Arkaitz | |
dc.contributor.author | Bergara Jauregui, Aitor | |
dc.contributor.author | De Juan Sanz, Fernando | |
dc.contributor.author | Grushin, A G | |
dc.contributor.author | García Vergniory, Maia | |
dc.date.accessioned | 2021-01-25T08:57:48Z | |
dc.date.available | 2021-01-25T08:57:48Z | |
dc.date.issued | 2020-01-01 | |
dc.identifier.citation | Journal of Physics Materials 3(1) : (2020) // Article ID 014001 | es_ES |
dc.identifier.issn | 2515-7639 | |
dc.identifier.uri | http://hdl.handle.net/10810/49849 | |
dc.description.abstract | Paper • The following article is Open access Spectral and optical properties of Ag3Au(Se2,Te2) and dark matter detection M-Á Sánchez-Martínez6,1 , I Robredo6,2,3, A Bidaurrazaga3, A Bergara2,3,4, F de Juan2,5, A G Grushin1 and M G Vergniory7,2,5 Published 29 October 2019 • © 2019 The Author(s). Published by IOP Publishing Ltd Journal of Physics: Materials, Volume 3, Number 1 Focus on Topological Matter Citation M-Á Sánchez-Martínez et al 2020 J. Phys. Mater. 3 014001 Download Article PDF Figures References 692 Total downloads 4 4 total citations on Dimensions. Turn on MathJax Share this article Share this content via email Share on Facebook Share on Twitter Share on Google+ Share on Mendeley Article information Abstract In this work we study the electronic structure of ${\mathrm{Ag}}_{3}{\mathrm{AuSe}}_{2}$ and ${\mathrm{Ag}}_{3}{\mathrm{AuTe}}_{2}$, two chiral insulators whose gap can be tuned through small changes in the lattice parameter by applying hydrostatic pressure or choosing different growth protocols. Based on first principles calculations we compute their band structure for different values of the lattice parameters and show that while ${\mathrm{Ag}}_{3}{\mathrm{AuSe}}_{2}$ retains its direct narrow gap at the Γ point, ${\mathrm{Ag}}_{3}{\mathrm{AuTe}}_{2}$ can turn into a metal. Focusing on ${\mathrm{Ag}}_{3}{\mathrm{AuSe}}_{2}$ we derive a low energy model around Γ using group theory, which we use to calculate the optical conductivity for different values of the lattice constant. We discuss our results in the context of detection of light dark matter particles, which have masses of the order of a keV, and conclude that ${\mathrm{Ag}}_{3}{\mathrm{AuSe}}_{2}$ satisfies three important requirements for a suitable detector: small Fermi velocities, meV band gap, and low photon screening. Our work motivates the growth of high-quality and large samples of ${\mathrm{Ag}}_{3}{\mathrm{AuSe}}_{2}$ to be used as target materials in dark matter detectors. | es_ES |
dc.description.sponsorship | We acknowledge support from the European Union's Horizon 2020 research and innovation programme under the Marie-Sklodowska-Curie grant agreement No. 754303 and the GreQuE Cofund programme (MASM). AGG is also supported by the ANR under the grant ANR-18-CE30-0001-01 and the European FET-OPEN SCHINES project No. 829044. MGV acknowledges the IS2016-75862-P national project of the Spanish MINECO. AB acknowledges financial support from the Spanish Ministry of Economy and Competitiveness (FIS2016-76617-P) and the Department of Education, Universities and Research of the Basque Government and the University of the Basque Country (IT756-13). | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | IOP | es_ES |
dc.relation | info:eu-repo/grantAgreement/EC/H2020/754303 | es_ES |
dc.relation | info:eu-repo/grantAgreement/EC/H2020/829044 | es_ES |
dc.relation | info:eu-repo/grantAgreement/MINECO/FIS2016-75862-P | es_ES |
dc.relation | info:eu-repo/grantAgreement/MINECO/FIS2016-76617-P | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es/ | * |
dc.subject | topology | es_ES |
dc.subject | topological materials | es_ES |
dc.subject | narrow gap semiconductors | es_ES |
dc.subject | optical conductivity | es_ES |
dc.subject | Sohncke space group | es_ES |
dc.subject | dark matter detection | es_ES |
dc.subject | Bilbao Crystallographic Server | es_ES |
dc.title | Spectral and optical properties of Ag3Au(Se2,Te2) and dark matterdetection | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.holder | Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. | es_ES |
dc.rights.holder | Atribución 3.0 España | * |
dc.relation.publisherversion | https://iopscience.iop.org/article/10.1088/2515-7639/ab3ea2 | es_ES |
dc.identifier.doi | 10.1088/2515-7639/ab3ea2 | |
dc.contributor.funder | European Commission | |
dc.departamentoes | Física de la materia condensada | es_ES |
dc.departamentoeu | Materia kondentsatuaren fisika | es_ES |
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