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http://hdl.handle.net/10261/209680
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dc.contributor.author | Haubold, Erik | - |
dc.contributor.author | Fedorov, Alexander | - |
dc.contributor.author | Pielnhofer, Florian | - |
dc.contributor.author | Rusinov, Igor P. | - |
dc.contributor.author | Menshchikova, Tatiana V. | - |
dc.contributor.author | Duppel, Viola | - |
dc.contributor.author | Friedrich, Daniel | - |
dc.contributor.author | Weihrich, Richard | - |
dc.contributor.author | Pfitzner, Arno | - |
dc.contributor.author | Zeugner, Alexander | - |
dc.contributor.author | Isaeva, Anna | - |
dc.contributor.author | Thirupathaiah, Setti | - |
dc.contributor.author | Kushnirenko, Yevhen | - |
dc.contributor.author | Rienks Emile | - |
dc.contributor.author | Timur, Kim | - |
dc.contributor.author | Chulkov, Eugene V. | - |
dc.contributor.author | Büchner, Bernd | - |
dc.contributor.author | Borisenk, Sergey | - |
dc.date.accessioned | 2020-04-29T14:20:45Z | - |
dc.date.available | 2020-04-29T14:20:45Z | - |
dc.date.issued | 2019-12-12 | - |
dc.identifier | doi: 10.1063/1.5124563 | - |
dc.identifier | issn: 2166-532X | - |
dc.identifier.citation | APL Materials 7: 121106 (2019) | - |
dc.identifier.uri | http://hdl.handle.net/10261/209680 | - |
dc.description.abstract | We report experimental and theoretical evidence that GaGeTe is a basic Z2 topological semimetal with three types of charge carriers: bulkoriginated electrons and holes as well as surface state electrons. This electronic situation is qualitatively similar to the classic 3D topological insulator Bi2Se3, but important differences account for an unprecedented transport scenario in GaGeTe. High-resolution angle-resolved photoemission spectroscopy combined with advanced band structure calculations show a small indirect energy gap caused by a peculiar band inversion at the T-point of the Brillouin zone in GaGeTe. An energy overlap of the valence and conduction bands brings both electron and holelike carriers to the Fermi level, while the momentum gap between the corresponding dispersions remains finite. We argue that peculiarities of the electronic spectrum of GaGeTe have a fundamental importance for the physics of topological matter and may boost the material’s application potential | - |
dc.description.sponsorship | This work was supported by DFG under the Grant No. BO 1912/7-1 as well as Grant Nos. IS 250/2-1 and PF 324/4-1 of the SPP 1666 program, Grant No. RU 776/15-1 of the ERANET-Chemistry program, Tomsk State University Project No. 8.1.01.2018, and St. Petersburg University Project No. 15.61.202.2015. Calculations were performed at the SKIF-Cyberia supercomputer of Tomsk State University and supported by RSF, grant No. 18-12-00169. The authors acknowledge Diamond Light Source for the beamtime at I05 beamline under Proposal No. SI18586 as well as the BESSY II Berlin for the beamtime at 13 ARPES station under Proposal Nos. 171-05051CR and 172-05659CR/R. The research leading to this result has been supported by the project CALIPSOplus under the Grant Agreement No. 730872 from the EU Framework Programme for Research and Innovation HORIZON 2020. S.B. is grateful to BMWi Germany for the support within the framework of WIPANOprogram (Grant No. N 03THW12H04). S.B. is also grateful to BMBF Germany for the support within the framework of Ukrainian-German Excellence Center UKRATOP project. | - |
dc.language | eng | - |
dc.publisher | AIP Publishing | - |
dc.relation | info:eu-repo/grantAgreement/EC/H2020/730872 | - |
dc.relation.isversionof | Publisher's version | - |
dc.rights | openAccess | - |
dc.title | Possible experimental realization of a basic Z(2) topological semimetal in GaGeTe | - |
dc.type | artículo | - |
dc.identifier.doi | 10.1063/1.5124563 | - |
dc.relation.publisherversion | http://dx.doi.org/10.1063/1.5124563 | - |
dc.date.updated | 2020-04-29T14:20:45Z | - |
dc.rights.license | http://creativecommons.org/licenses/by-nc-nd/4.0/ | - |
dc.contributor.funder | German Research Foundation | - |
dc.contributor.funder | Tomsk State University | - |
dc.contributor.funder | Saint Petersburg State University | - |
dc.contributor.funder | European Commission | - |
dc.relation.csic | Sí | - |
dc.identifier.funder | http://dx.doi.org/10.13039/501100000780 | es_ES |
dc.identifier.funder | http://dx.doi.org/10.13039/501100001659 | es_ES |
dc.identifier.funder | http://dx.doi.org/10.13039/501100008566 | es_ES |
dc.identifier.funder | http://dx.doi.org/10.13039/501100004285 | es_ES |
dc.type.coar | http://purl.org/coar/resource_type/c_6501 | es_ES |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
item.cerifentitytype | Publications | - |
item.openairetype | artículo | - |
item.grantfulltext | open | - |
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Possible_experimental.pdf | 7,29 MB | Adobe PDF | Visualizar/Abrir |
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