SMART: a planned ultrahigh-resolution spectromicroscope for BESSY II

Fink, R.; Weiß, Markus; Umbach, E.; Preikszas, D.; Rose, H.; Spehr, R.; Hartel, Peter; Engel, W.; Degenhardt, Ralf; Wichtendahl, Ralph; Kuhlenbeck, Helmut; Erlebach, Wolfgang; Ihmann, Klaus; Schlögl, Robert; Freund, Hans‐Joachim; Bradshaw, Alexander M.; Lilienkamp, G.; Schmidt, Th.; Bauer, E.; Benner, G.

doi:10.1016/s0368-2048(97)00016-9

Cited by 147 publications

(51 citation statements)

References 28 publications

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“…Nowadays, they provide time resolution in the picosecond range [7][8][9] and a lateral resolution down to a few nanometers. 10,11 It has been shown recently that standing-wave excitation can add dimensionality to PEEM. 12,13 In particular, sampling interfaces or nanoobjects with standing waves can provide additional depth resolution down to a fewÅngstroms.…”

Section: Introductionmentioning

confidence: 99%

Photoemission electron microscopy of three-dimensional magnetization configurations in core-shell nanostructures

et al. 2011

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We present a photoemission electron microscopy method that combines magnetic imaging of the surface and of the inner magnetization in three-dimensional core-shell nanostructures. The structure investigated consists of a cylindrical nickel core that is completely surrounded by a shell of iron oxide and silicon oxide layers. The method enables one to image the magnetization configuration of the nickel core even though the shell is thicker than the mean-free path of the photoelectrons. Characteristic L 3 and L 2 edges can be observed not only in the yield of the photoelectrons emitted from the surface of the nanostructure but also in its shadow. X-ray magnetic circular dichroism in the electron yield of the x rays absorbed and transmitted by the multilayered nanowire allows for the individual imaging of the magnetization configurations of the iron oxide tube and the nickel core. The method suggests novel approaches for the characterization of the magnetic and material properties of complex three-dimensional nanostructures.

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Section: Introductionmentioning

confidence: 99%

Photoemission electron microscopy of three-dimensional magnetization configurations in core-shell nanostructures

et al. 2011

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“…This instrument, called SMART [28,29] and installed at BESSY II, is aimed at the spectroscopic and structural characterization of individual nanoparticles supported on oxide films. Theory predicts a lateral resolution of 0.5 nm at an energy resolution of less than 100 meV, whereby the transmission is increased nearly a hundred times compared to conventional LEEM/PEEM instruments due to the large acceptance angle of SMART.…”

Section: A Project To Build a Spectromicroscope With Aberration Corrementioning

confidence: 99%

Innovative Measurement Techniques in Surface Science

et al. 2010

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We describe four new experimental techniques advanced during the last decade in the authors' laboratory. The techniques include photon scanning tunneling microscopy; aberration-corrected low-energy electron microscopy in combination with photoelectron emission microscopy, microcalorimetry, and electron-spin resonance spectroscopy. It is demonstrated how those techniques may be applied to solve fundamental problems in surface science with growing demands to tackle complex nanoscopic systems, and, in particular in catalysis science, which, without the availability of those techniques, would be difficult if not impossible to address.

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“…The energy distribution of emitted secondary electrons is well modeled by a function of the form E/(E+W f ) 4 , where E is the electron energy and work function is used for the calculation. The electron energy range is from 0eV to 20eV, with a takeoff angle is from 0 degree to 90 degree.…”

Section: Modelmentioning

confidence: 99%

“…The most promising approach to an aberration corrected PEEM is the introduction of an electrostatic mirror into PEEM [2][3][4]. An electrostatic mirror, in principle, can be used for the simultaneous correction of chromatic and spherical aberrations.…”

Section: Introductionmentioning

confidence: 99%

Modeling the acceleration field and objective lens for an aberration corrected photoemission electron microscope

Feng

Padmore

Wei³

et al. 2002

Review of Scientific Instruments

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The modeling of the optical properties of the acceleration field and objective lens of a photoemission electron microscope is presented. Theory to calculate the aberrations of the extraction field was derived, and extended to include relativistic effects. An analysis of the microscopes electron optical performance and aberrations has been performed using an analytical model as well as a raytracing method. Raytracing has the flexibility needed for the assessment of aberrations where the geometry is too complex for analytical methods. This work shows that in the case of a simple PEEM front end of the acceleration gap and objective lens, the all orders raytracing and full analytical treatments agree to very high precision. This allows us now to use the raytracing method in situations where analytical methods are difficult, such as an aberration compensating electron mirror.

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SMART: a planned ultrahigh-resolution spectromicroscope for BESSY II

Cited by 147 publications

References 28 publications

Photoemission electron microscopy of three-dimensional magnetization configurations in core-shell nanostructures

Photoemission electron microscopy of three-dimensional magnetization configurations in core-shell nanostructures

Innovative Measurement Techniques in Surface Science

Modeling the acceleration field and objective lens for an aberration corrected photoemission electron microscope

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