| 1. Identity statement | ||||
| Reference Type | Journal Article | |||
| Site | mtc-m21c.sid.inpe.br | |||
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S | |||
| Identifier | 8JMKD3MGP3W34R/427E63L | |||
| Repository | sid.inpe.br/mtc-m21c/2020/03.23.14.09 (restricted access) | |||
| Last Update | 2020:12.17.13.35.21 (UTC) administrator | |||
| Metadata Repository | sid.inpe.br/mtc-m21c/2020/03.23.14.09.20 | |||
| Metadata Last Update | 2022:01.04.01.35.02 (UTC) administrator | |||
| DOI | 10.1103/PhysRevMaterials.4.023602 | |||
| ISSN | 2475-9953 | |||
| Citation Key | RodriguesJúniorMRRASGPM:2020:PsReRo | |||
| Title | Direct observation of large strain through van der Waals gaps on epitaxial Bi2Te3/graphite: Pseudomorphic relaxation and the role of Bi-2 layers on the BixTey topological insulator series  | |||
| Year | 2020 | |||
| Month | Feb. | |||
| Access Date | 2024, May 18 | |||
| Type of Work | journal article | |||
| Secondary Type | PRE PI | |||
| Number of Files | 1 | |||
| Size | 4315 KiB | |||
| 2. Context | ||||
| Author | 1 Rodrigues Júnior, Gilberto 2 Marcal, Lucas Atila Bernardes 3 Ribeiro, Guliherme A. s. 4 Rappl, Paulo Henrique de Oliveira 5 Abramof, Eduardo 6 Sciammarella, Paulo Vitor 7 Guimarães, Luciano de Moura 8 Perez, Carlos Alberto 9 Malachias, Angelo | |||
| Resume Identifier | 1 2 3 4 8JMKD3MGP5W/3C9JJ37 5 8JMKD3MGP5W/3C9JGUH | |||
| Group | 1 2 3 4 LABAS-COCTE-INPE-MCTIC-GOV-BR 5 LABAS-COCTE-INPE-MCTIC-GOV-BR | |||
| Affiliation | 1 Universidade Federal de Minas Gerais (UFMG) 2 Universidade Federal de Minas Gerais (UFMG) 3 Universidade Federal de Minas Gerais (UFMG) 4 Instituto Nacional de Pesquisas Espaciais (INPE) 5 Instituto Nacional de Pesquisas Espaciais (INPE) 6 Universidade Federal de Viçosa (UFV) 7 Universidade Federal de Viçosa (UFV) 8 Laboratório Nacional de Luz Síncrotron (LNLS) 9 Universidade Federal de Minas Gerais (UFMG) | |||
| Author e-Mail Address | 1 2 3 4 paulo.rappl@inpe.br 5 eduardo.abramof@inpe.br | |||
| Journal | Physical Review Materials | |||
| Volume | 4 | |||
| Number | 2 | |||
| Pages | e023602 | |||
| History (UTC) | 2020-03-23 14:11:06 :: simone -> administrator :: 2020 2022-01-04 01:35:02 :: administrator -> simone :: 2020 | |||
| 3. Content and structure | ||||
| Is the master or a copy? | is the master | |||
| Content Stage | completed | |||
| Transferable | 1 | |||
| Content Type | External Contribution | |||
| Version Type | publisher | |||
| Abstract | Layered materials can usually grow without strain on top of distinct substrates if the only interaction between them is due to van der Waals forces. In such a scenario it would be expected that the heterointerface made up of weak bounds would not affect the overlayed material significantly for several large lattice-mismatched systems. Here we have studied the first stages of the heteroepitaxial growth of layered bismuth telluride topological insulator on top of highly oriented pyrolitic graphite (HOPG) by molecular beam epitaxy. Samples were investigated by atomic force microscopy (AFM), synchrotron x-ray diffraction (XRD), and micro-Raman spectroscopy. AFM images show hexagonal/triangular flat islands with exposed HOPG areas for the low coverage regime, and the lattice parameter of these Bi2Te3 structures were measured by XRD. The existence of pseudomorphic strain at the initial Bi2Te3 layers was retrieved by both XRD and Raman spectroscopy. We have found evidence that Bi2Te3 layers near the interface are subject to an in-plane compressive strain, leading to a pseudomorphic out-of-plane lattice expansion. Furthermore, the presence of Bi2Te3 islands locally distorts the topmost layer of HOPG, resulting in tensile strain which was measured by Raman spectroscopy. The observed relaxation of 0.1-0.2% for each van der Waals gap is used to calculate elastic constants of Bi-2 bilayers, which are crucial building blocks for the formation of other BixTey topological insulator compounds. Finally, the impact of such a strain in Bi2Te3 electronic structure was investigated by density functional theory calculations. The results show that the band structure of this strained material remains unchanged at the center of the Brillouin zone, confirming the robustness of surface states, but it is consistently affected at the M and K zone edges. | |||
| Area | FISMAT | |||
| Arrangement | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > LABAS > Direct observation of... | |||
| doc Directory Content | access | |||
| source Directory Content | there are no files | |||
| agreement Directory Content |
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| 4. Conditions of access and use | ||||
| Language | en | |||
| Target File | PhysRevMaterials_v4_p023602_2020_Bi2Te3-HPOG.pdf | |||
| User Group | self-uploading-INPE-MCTI-GOV-BR simone | |||
| Visibility | shown | |||
| Read Permission | deny from all and allow from 150.163 | |||
| Update Permission | not transferred | |||
| 5. Allied materials | ||||
| Linking | Trabalho não Vinculado à Tese/Dissertação | |||
| Next Higher Units | 8JMKD3MGPCW/3ESR3H2 | |||
| Dissemination | SCOPUS | |||
| Host Collection | urlib.net/www/2017/11.22.19.04 | |||
| 6. Notes | ||||
| Empty Fields | alternatejournal archivingpolicy archivist callnumber copyholder copyright creatorhistory descriptionlevel e-mailaddress format isbn keywords label lineage mark mirrorrepository nextedition notes orcid parameterlist parentrepositories previousedition previouslowerunit progress project readergroup rightsholder schedulinginformation secondarydate secondarykey secondarymark session shorttitle sponsor subject tertiarytype url | |||
| 7. Description control | ||||
| e-Mail (login) | simone | |||
| update | ||||