In-situ four-tip STM investigation of the transition from 2D to 3D charge transport in SrTiO 3

In-situ four-tip STM investigation of the transition from 2D to 3D charge transport in SrTiO 3

The electrical properties of SrTiO (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, distance-dependent four-point measurements were performed at the surface of the crystal at room tempera...

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Veröffentlicht in:Scientific reports 2019-12, Vol.9 (1), p.2476
Hauptverfasser: Leis, Arthur, Rodenbücher, Christian, Szot, Krzysztof, Cherepanov, Vasily, Tautz, F Stefan, Voigtländer, Bert
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Sprache:eng
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Zusammenfassung:The electrical properties of SrTiO (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, distance-dependent 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
ISSN:2045-2322
DOI:10.1038/s41598-019-38888-x