Adjusting island density and morphology of the SrTiO[subscript 3](110)-(4×1) surface: Pulsed laser deposition combined with scanning tunneling microscopy
The first stages of homoepitaxial growth of the (4 × 1) reconstructed surface of SrTiO[subscript 3](110) are probed by a combination of pulsed laser deposition (PLD) with in-situ reflection high energy electron diffraction (RHEED) and scanning tunneling microscopy (STM). Considerations of interfacin...
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| Format: | Article |
| Language: | en_US |
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Elsevier
2016
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| Online Access: | http://hdl.handle.net/1721.1/104864 https://orcid.org/0000-0002-2688-5666 |
| _version_ | 1826189825924923392 |
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| author | Gerhold, Stefan Riva, Michele Yildiz, Bilge Schmid, Michael Diebold, Ulrike |
| author2 | Massachusetts Institute of Technology. Department of Nuclear Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Nuclear Science and Engineering Gerhold, Stefan Riva, Michele Yildiz, Bilge Schmid, Michael Diebold, Ulrike |
| author_sort | Gerhold, Stefan |
| collection | MIT |
| description | The first stages of homoepitaxial growth of the (4 × 1) reconstructed surface of SrTiO[subscript 3](110) are probed by a combination of pulsed laser deposition (PLD) with in-situ reflection high energy electron diffraction (RHEED) and scanning tunneling microscopy (STM). Considerations of interfacing high-pressure PLD growth with ultra-high-vacuum surface characterization methods are discussed, and the experimental setup and procedures are described in detail. The relation between RHEED intensity oscillations and ideal layer-by-layer growth is confirmed by analysis of STM images acquired after deposition of sub-monolayer amounts of SrTiO[subscript 3]. For a quantitative agreement between RHEED and STM results one has to take into account two interfaces: the steps at the circumference of islands, as well as the borders between two different reconstruction phases on the islands themselves. Analysis of STM images acquired after one single laser shot reveals an exponential decrease of the island density with increasing substrate temperature. This behavior is also directly visible from the temperature dependence of the relaxation times of the RHEED intensity. Moreover, the aspect ratio of islands changes considerably with temperature. The growth mode depends on the laser pulse repetition rate, and can be tuned from predominantly layer-by-layer to the step-flow growth regime. |
| first_indexed | 2024-09-23T08:23:14Z |
| format | Article |
| id | mit-1721.1/104864 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T08:23:14Z |
| publishDate | 2016 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | mit-1721.1/1048642022-09-23T12:35:45Z Adjusting island density and morphology of the SrTiO[subscript 3](110)-(4×1) surface: Pulsed laser deposition combined with scanning tunneling microscopy Adjusting island density and morphology of the SrTiO3(110)-(4 × 1) surface: Pulsed laser deposition combined with scanning tunneling microscopy Gerhold, Stefan Riva, Michele Yildiz, Bilge Schmid, Michael Diebold, Ulrike Massachusetts Institute of Technology. Department of Nuclear Science and Engineering Yildiz, Bilge The first stages of homoepitaxial growth of the (4 × 1) reconstructed surface of SrTiO[subscript 3](110) are probed by a combination of pulsed laser deposition (PLD) with in-situ reflection high energy electron diffraction (RHEED) and scanning tunneling microscopy (STM). Considerations of interfacing high-pressure PLD growth with ultra-high-vacuum surface characterization methods are discussed, and the experimental setup and procedures are described in detail. The relation between RHEED intensity oscillations and ideal layer-by-layer growth is confirmed by analysis of STM images acquired after deposition of sub-monolayer amounts of SrTiO[subscript 3]. For a quantitative agreement between RHEED and STM results one has to take into account two interfaces: the steps at the circumference of islands, as well as the borders between two different reconstruction phases on the islands themselves. Analysis of STM images acquired after one single laser shot reveals an exponential decrease of the island density with increasing substrate temperature. This behavior is also directly visible from the temperature dependence of the relaxation times of the RHEED intensity. Moreover, the aspect ratio of islands changes considerably with temperature. The growth mode depends on the laser pulse repetition rate, and can be tuned from predominantly layer-by-layer to the step-flow growth regime. Austrian Science Fund (Project F 4507-N16) Austrian Science Fund (FWF Doctoral College Solids4Fun (W1243)) European Research Council (ERC Project, ERC-2011-ADG-20110209) 2016-10-19T19:39:56Z 2016-10-19T19:39:56Z 2016-03 2016-02 Article http://purl.org/eprint/type/JournalArticle 00396028 http://hdl.handle.net/1721.1/104864 Stefan, Gerhold, Michele Riva, Bilge Yildiza, Michael Schmida, and Ulrike Diebolda. "Adjusting island density and morphology of the SrTiO3(110)-(4×1) surface: Pulsed laser deposition combined with scanning tunneling microscopy." Surface Science, vol. 651, September 2016, pp. 76-83. https://orcid.org/0000-0002-2688-5666 en_US http://dx.doi.org/10.1016/j.susc.2016.03.010 Surface Science Creative Commons Attribution-NonCommercial-NoDerivs License http://creativecommons.org/licenses/by-nc-nd/4.0/ application/pdf Elsevier Elsevier |
| spellingShingle | Gerhold, Stefan Riva, Michele Yildiz, Bilge Schmid, Michael Diebold, Ulrike Adjusting island density and morphology of the SrTiO[subscript 3](110)-(4×1) surface: Pulsed laser deposition combined with scanning tunneling microscopy |
| title | Adjusting island density and morphology of the SrTiO[subscript 3](110)-(4×1) surface: Pulsed laser deposition combined with scanning tunneling microscopy |
| title_full | Adjusting island density and morphology of the SrTiO[subscript 3](110)-(4×1) surface: Pulsed laser deposition combined with scanning tunneling microscopy |
| title_fullStr | Adjusting island density and morphology of the SrTiO[subscript 3](110)-(4×1) surface: Pulsed laser deposition combined with scanning tunneling microscopy |
| title_full_unstemmed | Adjusting island density and morphology of the SrTiO[subscript 3](110)-(4×1) surface: Pulsed laser deposition combined with scanning tunneling microscopy |
| title_short | Adjusting island density and morphology of the SrTiO[subscript 3](110)-(4×1) surface: Pulsed laser deposition combined with scanning tunneling microscopy |
| title_sort | adjusting island density and morphology of the srtio subscript 3 110 4 1 surface pulsed laser deposition combined with scanning tunneling microscopy |
| url | http://hdl.handle.net/1721.1/104864 https://orcid.org/0000-0002-2688-5666 |
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