DC pole | Wartość | Język |
dc.contributor.author | Leis, Arthur | - |
dc.contributor.author | Rodenbücher, Christian | - |
dc.contributor.author | Szot, Krzysztof | - |
dc.contributor.author | Cherepanov, Vasily | - |
dc.contributor.author | Tautz, F. Stefan | - |
dc.contributor.author | Voigtländer, Bert | - |
dc.date.accessioned | 2019-03-01T10:31:05Z | - |
dc.date.available | 2019-03-01T10:31:05Z | - |
dc.date.issued | 2019 | - |
dc.identifier.citation | Scientific Reports, Vol. 9 (2019), Art. No. 2476 | pl_PL |
dc.identifier.issn | 2045-2322 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.12128/8371 | - |
dc.description.abstract | The electrical properties of SrTiO3(100) single crystals were investigated in-situ at different stages of
thermal reduction by means of a 4-tip STM. Using the tips of the STM as electrical probes, distancedependent
four-point measurements were performed at the surface of the crystal at room temperature
after reduction by thermal treatment. For annealing temperatures T ≤ 700 °C, charge transport is
confined to a surface region <3 μm below the surface. For reduction at T ≥ 900 °C a transition from
a conducting 2D sheet with insulating bulk to a system with dominant 3D bulk conductivity is found.
At an intermediate reduction temperature of T = 800 °C, a regime with mixed 2D/3D contributions
is observed in the distance-dependent resistance measurements. Describing the depth-dependent
conductivity with an analytical N-layer model, this regime of mixed 2D/3D conductivity is evaluated
quantitatively under the assumption of an exponentially decaying conductivity profile, correlated
with the previously observed depth-dependent dislocation density in the sample. A non-monotonous
temperature dependence of the 3D conductivity in the respective conducting layer is found and possible
underlying mechanisms are discussed, particularly with regard to non-intrinsic material properties
depending on details of the sample preparation. | pl_PL |
dc.language.iso | en | pl_PL |
dc.rights | Uznanie autorstwa 3.0 Polska | * |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/pl/ | * |
dc.subject | SrTiO3 | pl_PL |
dc.subject | In-situ | pl_PL |
dc.title | In-situ four-tip STM investigation of the transition from 2D to 3D charge transport in SrTiO3 | pl_PL |
dc.type | info:eu-repo/semantics/article | pl_PL |
dc.identifier.doi | 10.1038/s41598-019-38888-x | - |
Pojawia się w kolekcji: | Artykuły (WNŚiT)
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