| 1. Identity statement | ||||
| Reference Type | Slides (Audiovisual Material) | |||
| Site | mtc-m21b.sid.inpe.br | |||
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S | |||
| Identifier | 8JMKD3MGP3W34P/3PPTATP | |||
| Repository | sid.inpe.br/mtc-m21b/2017/10.10.13.20 | |||
| Last Update | 2017:10.10.13.20.37 (UTC) administrator | |||
| Metadata Repository | sid.inpe.br/mtc-m21b/2017/10.10.13.20.37 | |||
| Metadata Last Update | 2021:09.16.02.57.35 (UTC) administrator | |||
| Secondary Key | INPE--PRE/ | |||
| Citation Key | PenaPePiSoRaAb:2017:PaTrPb | |||
| Title | Parallel transport in PbTe/PbEuTe quantum wells  | |||
| Short Title | Slides | |||
| Format | On-line | |||
| Year | 2017 | |||
| Access Date | 2024, May 18 | |||
| Secondary Type | PRE CN | |||
| Number of Files | 1 | |||
| Size | 2230 KiB | |||
| 2. Context | ||||
| Author | 1 Pena, Fernando Silva 2 Peres, Marcelos Lima 3 Pirralho, Marília de Jesus Pascoa 4 Soares, Demétrio Artur Werner 5 Rappl, Paulo Henrique de Oliveira 6 Abramof, Eduardo | |||
| Resume Identifier | 1 2 3 4 5 8JMKD3MGP5W/3C9JJ37 6 8JMKD3MGP5W/3C9JGUH | |||
| Group | 1 2 3 4 5 LABAS-COCTE-INPE-MCTIC-GOV-BR 6 LABAS-COCTE-INPE-MCTIC-GOV-BR | |||
| Affiliation | 1 2 3 4 5 Instituto Nacional de Pesquisas Espaciais (INPE) 6 Instituto Nacional de Pesquisas Espaciais (INPE) | |||
| Author e-Mail Address | 1 2 3 4 5 paulo.rappl@inpe.br 6 eduardo.abramof@inpe.br | |||
| Conference Name | Brazilian Workshop on Semiconductor Physics, 18 (BWSP) | |||
| Conference Location | Maresias, SP | |||
| Date | 14-18 ago. | |||
| Publisher | Instituto Nacional de Pesquisas Espaciais | |||
| Publisher City | São José dos Campos | |||
| History (UTC) | 2017-10-10 13:20:37 :: simone -> administrator :: 2021-09-16 02:57:35 :: administrator -> simone :: 2017 | |||
| 3. Content and structure | ||||
| Is the master or a copy? | is the master | |||
| Content Stage | completed | |||
| Transferable | 1 | |||
| Content Type | External Contribution | |||
| Abstract | PbTe based quantum wells (QW´s) has have been widely used to fabricate infrared (IR) lasers, IR detectors and thermogenerators [1]. Also, due to the large interest in spintronic devices developments, some efforts have been actually dispended to the investigation of spin-orbit (SO) coupling and quantum Hall effect in different nanostructures systems and PbTe based structures have emerged as potential candidates for the development of spintronic devices [2]. We investigated the photoconductivity effect in n-type PbTe/Pb1- xEuxTe quantum wells (QW´s) for temperature range of 300K to 77K using infrared light. The measurements revealed that at high temperatures the photoresponse has small amplitude. As temperature decreases it reaches a maximum amplitude around 100K which is 1000 times higher than the original before illumination. Unexpectedly, for further reducing of temperature, the amplitude starts to decrease. This behavior indicates the presence of a transition regime which is a result of parallel transport that occurs between the barriers and the QW even if the barriers are insulators. For temperatures below 100K, the transport is more effective in the QW where the signal decreasing can be associated to the electron-electron scattering due to the increasing of carrier concentration that occurs under illumination. For a further analysis, we performed Hall measurements under dark and light conditions and a general picture of the physical process is presented. We were also able to investigate the persistent photoconductivity effect which is a result of defect states present within the band structure of the QW and barriers. We hope that this investigation leads to the improvement of infrared sensor devices based on PbTe structures. [1] Pei, Y. L et al, Journal of Alloys and Compounds 514 (2012); [2] B. Grbic, et al, Phys. Rev. B 77, 125312 (2008). | |||
| Area | FISMAT | |||
| Arrangement 1 | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > LABAS > Slides | |||
| Arrangement 2 | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > LABAS > Parallel transport in... > Slides | |||
| doc Directory Content | access | |||
| source Directory Content | there are no files | |||
| agreement Directory Content |
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| 4. Conditions of access and use | ||||
| data URL | http://mtc-m21b.sid.inpe.br/ibi/8JMKD3MGP3W34P/3PPTATP | |||
| zipped data URL | http://mtc-m21b.sid.inpe.br/zip/8JMKD3MGP3W34P/3PPTATP | |||
| Language | en | |||
| Target File | pena_parallel_apresentacao.pdf | |||
| User Group | simone | |||
| Visibility | shown | |||
| Read Permission | allow from all | |||
| Update Permission | not transferred | |||
| 5. Allied materials | ||||
| Mirror Repository | sid.inpe.br/mtc-m21b/2013/09.26.14.25.22 | |||
| Next Higher Units | 8JMKD3MGPCW/3ESR3H2 8JMKD3MGP3W34P/3PGF728 | |||
| Citing Item List | sid.inpe.br/mtc-m21/2012/07.13.14.57.50 2 sid.inpe.br/bibdigital/2013/09.24.19.30 1 sid.inpe.br/mtc-m21/2012/07.13.14.44.57 1 | |||
| Host Collection | sid.inpe.br/mtc-m21b/2013/09.26.14.25.20 | |||
| 6. Notes | ||||
| Empty Fields | archivingpolicy archivist booktitle callnumber copyholder copyright creatorhistory descriptionlevel dissemination doi e-mailaddress isbn issn keywords label lineage mark nextedition notes numberofslides orcid parameterlist parentrepositories previousedition previouslowerunit progress project readergroup rightsholder schedulinginformation secondarydate secondarymark session sponsor subject tertiarymark tertiarytype type url versiontype volume | |||
| 7. Description control | ||||
| e-Mail (login) | simone | |||
| update | ||||