New insights into nano-magnetism by spin-polarized scanning tunneling microscopy

Sander, Dirk; Oka, Hideki; Corbetta, Marco; Stepanyuk, V. S.; Kirschner, J.

doi:10.1016/j.elspec.2012.09.006

Cited by 9 publications

(16 citation statements)

References 70 publications

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“…The load-lock chamber allows fast introduction and removal of sample and tip into and out of the system without breaking the vacuum of the preparation chamber within some 2 h after loading. Further details of the system are described by Wedekind (2010) and Sander et al (2013). Other low-temperature STM systems with magnetic field are described by , Wiebe et al (2004), and Zhang et al (2011).…”

Section: Methodsmentioning

confidence: 99%

Spin-polarized quantum confinement in nanostructures: Scanning tunneling microscopy

et al. 2014

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Experimental investigations of spin-polarized electron confinement in nanostructures by scanning tunneling microscopy (STM) and scanning tunneling spectroscopy (STS) are reviewed. To appreciate the experimental results on the electronic level, the physical basis of STM is elucidated with special emphasis on the correlation between differential conductance, as measured by STS, and the electron density of states, which is accessible in ab initio theory. Experimental procedures which allow one to extract the electron dispersion relation from energy-dependent and spatially resolved STM and STS studies of electron confinement are reviewed. The role of spin polarization in electron confinement is highlighted by both experimental and theoretical insights, which indicate variation of the spin polarization in sign and magnitude on the nanometer scale. This review provides compelling evidence for the necessity to include spatial-dependent spin-resolved electronic properties for an in-depth understanding and quantitative assessment of electron confinement in magnetic nanostructures and interaction between magnetic adatoms.

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Section: Methodsmentioning

confidence: 99%

Spin-polarized quantum confinement in nanostructures: Scanning tunneling microscopy

et al. 2014

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“…In this section the main properties of the Co island are only briefly introduced, since the growth, electronic and magnetic properties of this system have already been intensively investigated before [10][11][12]33,45,[57][58][59][60][61] . Co islands prepared on the Cu(111) surface according to the procedure described in section II A exhibit the typical triangular shape [inset of Co islands on the Cu(111) surface correspond to fcc (unfaulted) or hcp (faulted) stacking of the first Co layer with respect to the stacking of the substrate 35 .…”

Section: A Co Islands On Cu(111)mentioning

confidence: 99%

Quantum interference effects in molecular spin hybrids

et al. 2017

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We have studied by means of low-temperature scanning tunneling microscopy (STM) and spectroscopy (STS) single molecular spin hybrids formed upon chemisorbing a polycyclic aromatic, 3-fold symmetric hydrocarbon molecule on Co(111) nanoislands. The spin-dependent hybridization between the Co d-states and the π-orbitals of the molecule leads to a spin-imbalanced electronic structure of the chemisorbed organic molecule. Spin-sensitive measurements reveal that the spin polarization shows intramolecular variations among the different aromatic rings in spite of the highly symmetric adsorption geometry promoted by symmetry matching of the 3-fold symmetric molecule and the 6-fold symmetric Co(111) lattice. Hence, the varying degree of spin polarization on the organic molecule does not stem from a different hybridization of the aromatic rings with the Co atoms, but is proposed to be a consequence of the superposition of the spin polarization of the molecule and the spatially modulated spin polarization of the spin-dependent quantum interference pattern of the Co(111) surface state.

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“…Our quantitative analysis of magnetization reversal data by spin-STM provide compelling evidence that the atoms near the edge of the Co bilayer island are magnetically soft, i.e. they exhibit a vanishing magnetic anisotropy [69,71,131]. We are led to the proposition that structural relaxation at the island edge is a pivotal aspect of this peculiar behavior.…”

Section: Influence Of Mesoscopic Relaxation On the Magnetism Of Nano-mentioning

confidence: 85%

“…These Co islands have an easy out-ofplane magnetization direction [139]. We measure the switching field for islands of different size from the sharp signal drop of the differential conductance during a sweep of the magnetic field [69,71]. Fig.…”

Section: Influence Of Mesoscopic Relaxation On the Magnetism Of Nano-mentioning

confidence: 99%

Effect of mesoscopic misfit on growth, morphology, electronic properties and magnetism of nanostructures at metallic surfaces

Brovko

Бажанов

Meyerheim

et al. 2014

Surface Science Reports

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Stress and strain originating from mesoscopic misfit at interfaces can have diverse effects on the properties of surfaces and nanostructures thereon. We review the sources and consequences of mesoscopic misfit at metallic surfaces and elucidate various ways in which it affects growth, morphology, electronic properties and magnetism of thin films in early stages of epitaxy and epitaxial nanostructures.

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New insights into nano-magnetism by spin-polarized scanning tunneling microscopy

Cited by 9 publications

References 70 publications

Spin-polarized quantum confinement in nanostructures: Scanning tunneling microscopy

Spin-polarized quantum confinement in nanostructures: Scanning tunneling microscopy

Quantum interference effects in molecular spin hybrids

Effect of mesoscopic misfit on growth, morphology, electronic properties and magnetism of nanostructures at metallic surfaces

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