Giant reversible nanoscale piezoresistance at room temperature in Sr2IrO4 thin films
Publication Type | Journal Article
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Authors | |
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DOI |
10.1039/c4nr06954d
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Abstract |
Layered iridates have been the subject of intense scrutiny on account of their unusually strong spin-orbit coupling, which opens up a narrow bandgap in a material that would otherwise be a metal. This insulating state is very sensitive to external perturbations. Here, we show that vertical compression at the nanoscale, delivered using the tip of a standard scanning probe microscope, is capable of inducing a five orders of magnitude change in the room temperature resistivity of Sr2IrO4. The extreme sensitivity of the electronic structure to anisotropic deformations opens up a new angle of interest on this material, with the giant and fully reversible perpendicular piezoresistance rendering iridates as promising materials for room temperature piezotronic devices. This journal is © The Royal Society of Chemistry.
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Notes |
cited By 12
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Journal |
Nanoscale
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Volume |
7
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Year of Publication |
2015
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Number |
8
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Pagination |
3453-3459
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Publisher |
Royal Society of Chemistry
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ISSN Number |
20403364
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Keywords | |
Research Areas | |
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