Magnetic nanostructures stabilized by surface-state electrons

Stepanyuk, V. S.; Niebergall, L.; Longo, Roberto C.; Hergert, W.; Bruno, P.

doi:10.1103/physrevb.70.075414

Cited by 69 publications

(80 citation statements)

References 20 publications

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“…Several applications of our method can be found in recent works. 11,22,23 We have found that the pair potential well depth is 0.6 meV which is in reasonable agreement with experiments. Therefore, we believe that the asymptotic equation ͑2͒ fitted to the experimental results properly describes the substrate-mediated interaction between Ce adatoms.…”

Section: Methods Of Calculationsupporting

confidence: 77%

“…[3][4][5][6] Recent experimental and theoretical studies have indicated that the long-range interactions ͑LRIs͒ between adsorbates on metal surfaces [7][8][9] can be exploited to create a new nanostructures. 10,11 Such interactions are caused by the quantum interference of surface-state electrons scattered off adsorbates. Experiments performed by means of the STM ͑Refs.…”

Section: Introductionmentioning

confidence: 99%

“…Experiments performed by means of the STM ͑Refs. 4 and 10͒ and ab initio calculations 11,12 have resolved surface-state mediated interactions at large adatom-adatom separations. The LRI potential depends on the type of the adsorbate atoms and the substrate.…”

Section: Introductionmentioning

confidence: 99%

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Self-organization of Ce adatoms onAg(111): A kinetic Monte Carlo study

et al. 2006

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One of the most fascinating experimental results in fabrication of artificial nanostructures is the creation of the macroscopically ordered superlattice of Ce adatoms on Ag͑111͒ ͓F. Silly et al., Phys. Rev. Lett. 92, 016101 ͑2004͔͒. Here, performing kinetic Monte Carlo simulations, we study the formation of Ce superlattice at the atomic scale. It is demonstrated that the surface-state mediated long-range interaction between Ce adatoms can lead to their self-assembly into a well ordered structure. The temperature of the substrate and the concentration of Ce adatoms are shown to play a key role in this process.

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Section: Methods Of Calculationsupporting

confidence: 77%

Section: Introductionmentioning

confidence: 99%

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Self-organization of Ce adatoms onAg(111): A kinetic Monte Carlo study

et al. 2006

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“…An interesting feature is that ferromagnetism is found on the Shockley surface at R = 1, consistent with the Lindhard function, as well as the result in Ref. [140], where R is the impurity separation along the nearest neighbor direction in units of the lattice spacing. Beyond R = 1 however, the Kondo effect will dominate over ferromagnetism, whereas the perturbative results again predict oscillations.…”

Section: Resultssupporting

confidence: 69%

“…[133][134][135] This technique can, for example, uncover spatial profiles of magnetic excitations in artificial one-dimensional spin chains [136][137][138][139]. The surface not only supports the spin centres, but also plays a crucial role in stabilizing magnetic order [48,[140][141][142]. The impurities are coupled through exchange interactions of different physical origins, either direct exchange for nearest-neighbor adsorption sites or indirect substrate-mediated coupling that asymptotically decay as a power-law with increasing separation between the impurities (RKKY interaction) [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

A non-perturbative treatment of quantum impurity problems in real lattices

Allerdt¹

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Tuning Transition Metal‐Containing Molecular Magnets by On‐Surface Polymerization

Baranowski,

Cojocariu,

Schio

et al. 2024

Adv Materials Inter

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Porphyrins are promising multifunctional units particularly interesting for the realization of molecular nanodevices. Their structural variety allows to create precursors suitable for the on‐surface polymerization of porphyrin blocks. The corresponding increased stability and improved transport properties of the formed polymerized molecular nanostructures make them practically worthwhile. For the case of 2D porphyrin materials, the effect of polymerization on the magnetic properties of transition metal ions has not been reported yet. Therefore, details on the properties of an extended covalent nickel tetraphenylporphyrin network formed via Ullmann coupling on the Cu(111) surface are reported. By using photoelectron and absorption spectroscopies together with density functional theory calculations, it is systematically evolving how the functional properties of the Ni centers are changed within a polymerized molecular structure in comparison to single‐molecule nickel tetraphenylporphyrin derivatives that build the 2D molecular network. A model that explains the differences in the electronic and magnetic properties observed for the Ni centers in both structures based on the additional rigidity characteristic of the molecular layer after polymerization is drawn.

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Magnetic nanostructures stabilized by surface-state electrons

Cited by 69 publications

References 20 publications

Self-organization of Ce adatoms onAg(111): A kinetic Monte Carlo study

Self-organization of Ce adatoms onAg(111): A kinetic Monte Carlo study

A non-perturbative treatment of quantum impurity problems in real lattices

Tuning Transition Metal‐Containing Molecular Magnets by On‐Surface Polymerization

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