Optical reflectance anisotropy of buried Fe nanostructures on vicinal W(110)

Fleischer, K.; Carroll, L.; Smith, Connor; McGilp, J. F.

doi:10.1088/0953-8984/19/26/266003

Cited by 13 publications

(16 citation statements)

References 32 publications

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“…24,25 Nevertheless, a wide range of metal and semiconductor anisotropic crystalline surfaces have been previously studied by RAS. [24][25][26][27][28][29][30] In contrast, only a few reports on optical anisotropies of metal oxide surfaces exist, mostly focussed on wide band gap materials such as ZnO 31 or superconducting cuprates.…”

Section: -20mentioning

confidence: 99%

Reflectance anisotropy spectroscopy of magnetite (110) surfaces

et al. 2014

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Reflectance anisotropy spectroscopy (RAS) has been used to measure the optical anisotropies of bulk and thin film Fe3O4(110) surfaces. The spectra indicate that small shifts in energy of the optical transitions, associated with anisotropic strain or electric field gradients caused by the (110) surface termination or an native oxide layer, are responsible for the strong signal observed. The RAS response was then measured as a function of temperature. A distinct change in the RAS line shape amplitude was observed in the spectral range from 0.8 to 1.6 eV for temperatures below the Verwey transition of the crystal. Finally thin film magnetite was grown by molecular beam epitaxy on MgO(110) substrates. Changes in the RAS spectra were found for different film thickness, suggesting that RAS can be used to monitor the growth of magnetite (110) films in situ. The thickness dependence of the RAS is discussed in terms of various models for the origin of the RAS signal.

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Section: -20mentioning

confidence: 99%

Reflectance anisotropy spectroscopy of magnetite (110) surfaces

et al. 2014

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“…The reflection anisotropy spectroscopy (RAS) system has been described previously [12]. Briefly, RAS measures the difference in reflectance, at near normal incidence, of light linearly polarized in two orthogonal directions at the surface plane of a cubic material [13]:…”

Section: Experiments and Phenomenologymentioning

confidence: 99%

X‐ray magnetic circular dichroism and reflection anisotropy spectroscopy Kerr effect studies of capped magnetic nanowires

Cunniffe

McNally

Liberati

et al. 2010

Physica Status Solidi (b)

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Aligned Co wires grown on Pt(997) under ultra-high vacuum conditions have been capped successfully by the epitaxial growth of Au monolayers (ML) at room temperature. The samples were kept under vacuum except when transferring between apparatus or when making some of the measurements. No degradation of the Co wires was detected during the measurements. The magneto-optic response of the system was measured using xray magnetic circular dichroism (XMCD) at the Co L 2,3 edge and reflection anisotropy spectroscopy (RAS) at near-normal-incidence, which is sensitive to the normal component of the out-of-plane magnetization via the Kerr effect (MOKE). Capping the wires significantly impacts their magnetic properties. Comparison of the magnetooptic response of the system at x-ray and optical energies reveals small differences that are attributed to the induced moment in the Pt substrate and Au capping layer not picked up by the element specific XMCD measurements.. The sensitivity of RAS-MOKE is sufficient to allow the determination of the easy axis direction of the capped wires to within a few degrees. The results for a 6-atom-wide Co wire sample, capped with 6 ML of Au, are consistent with the capped wires possessing perpendicular magnetization.

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“…Deposition of 0.18 monolayers (ML) of Au onto the vicinal Si surface produces aligned, single height atomic steps, which act as a template for the growth of highly anisotropic Pb islands [29]. Deposition of Au and Pb was monitored optically using a visible/near-IR (0.45-5 eV) RAS system, which uses photoelastic modulation (PEM) to change the polarization state of the light [30]. This technique has been shown to be a sensitive probe of aligned, anisotropic phases grown on vicinal Si surfaces [31][32][33].…”

Section: Methodsmentioning

confidence: 99%

An analytic approach to modeling the optical response of anisotropic nanoparticle arrays at surfaces and interfaces

Persechini¹,

Verre²,

McAlinden³

et al. 2014

J. Phys.: Condens. Matter

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Anisotropic nanoparticle (NP) arrays with useful optical properties, such as localized plasmon resonances (LPRs), can be grown by self-assembly on substrates. However, these systems often have significant dispersion in NP dimensions and distribution, which makes a numerical approach to modeling the LPRs very difficult. An improved analytic approach to this problem is discussed in detail and applied successfully to NP arrays from three systems that differ in NP metal, shape and distribution, and in substrate and capping layer. The materials and anisotropic NP structures that will produce LPRs in desired spectral regions can be determined using this approach.

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Optical reflectance anisotropy of buried Fe nanostructures on vicinal W(110)

Cited by 13 publications

References 32 publications

Reflectance anisotropy spectroscopy of magnetite (110) surfaces

Reflectance anisotropy spectroscopy of magnetite (110) surfaces

X‐ray magnetic circular dichroism and reflection anisotropy spectroscopy Kerr effect studies of capped magnetic nanowires

An analytic approach to modeling the optical response of anisotropic nanoparticle arrays at surfaces and interfaces

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