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Strain-induced effects in the electronic and spin properties of a monolayer of ferromagnetic GdAg2

AuthorsCorrea, Alexandre; Xu, Bo; Verstraete, Matthieu J. CSIC ORCID; Vitali, Lucia CSIC ORCID
Issue Date2016
PublisherRoyal Society of Chemistry (UK)
CitationNanoscale 8(45): 19148-19153 (2016)
AbstractWe report on the structural, electronic and magnetic properties of a monolayer of GdAg2, forming a moiré pattern on Ag(111). Combining scanning tunneling microscopy and ab initio spin-polarized calculations, we show that the electronic band structure can be shifted linearly via thermal controlled strain of the intra-layer atomic distance in the range of 1-7%, leading to lateral hetero-structuring. Furthermore, the coupling of the incommensurable GdAg2 alloy layer to the Ag(111) substrate leads to spatially varying atomic relaxation causing subsurface layer buckling, texturing of the electronic and spin properties, and inhomogeneity of the magnetic anisotropy energy across the layer. These results provide perspectives for control of electronic properties and magnetic ordering in atomically-thin layers.
Publisher version (URL)https://doi.org/10.1039/C6NR06398E
Identifiersdoi: 10.1039/C6NR06398E
e-issn: 2040-3372
issn: 2040-3364
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