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Harald Brune

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Related publications (117)

Page 5 of 6

Controlled deposition of size-selected silver nanoclusters

Klaus Kern, Harald Brune, Wolfgang Harbich

Variable-temperature scanning tunneling microscopy was used to study the effect of kinetic cluster energy and rare-gas buffer layers on the deposition process of size-selected silver nanoclusters on a platinum(111) surface. Clusters with impact energies of ...

American Association for the Advancement of Science1996

Radial elasticity of multiwalled carbon nanotubes

Christian Klinke, Harald Brune, Stephan Fedrigo, Ismaël Palaci

We report an experimental and a theoretical study of the radial elasticity of multiwalled carbon nanotubes as a function of external radius. We use atomic force microscopy and apply small indentation amplitudes in order to stay in the linear elasticity reg ...

2005

Magnetic properties of single rare-earth atoms on graphene/Ir(111)

Harald Brune, Stefano Rusponi, Marina Pivetta, Jan Gui-Hyon Dreiser, Fabio Donati, Christian Wäckerlin, Aparajita Singha, Romana Baltic

2018

Using metal-organic templates to steer the growth of Fe and Co nanoclusters

Harald Brune, Uta Schlickum, Régis Decker

AIP American Institute of Physics2008

Two Distinct Phases of Bilayer Graphene Films on Ru(0001)

Harald Brune, Marco Grioni, Stefano Rusponi, Emmanouil Frantzeskakis, Donat Fabian Natterer, Anne Lehnert, Quentin Dubout

By combining angle-resolved photoemission spectroscopy and scanning tunneling microscopy we reveal the structural and electronic properties of multilayer graphene on Ru(0001). We prove that large ethylene exposure allows the synthesis of two distinct phase ...

Amer Chemical Soc2012

High tunnel magnetoresistance in spin-polarized scanning tunneling microscopy of Co nanoparticles on Pt(111)

Harald Brune, Stefano Rusponi, Nicolas Weiss

We employ variable-temperature spin-polarized scanning tunneling microscopy in constant current mode to read the magnetic state of monodomain cobalt nanoparticles on Pt(111). In order to avoid stray fields we use in situ prepared antiferromagnetically (Cr) ...

2005

Complex Interplay and Hierarchy of Interactions in Two-Dimensional Supramolecular Assemblies

Harald Brune, Marta Canas Ventura

In order to address the interplay of hydrogen bonding, dipolar interactions, and metal coordination, we have investigated the two-dimensional mono- and bicomponent self-assembly of three closely related diaminotriazine-based molecular building blocks and a ...

American Chemical Society2011

Chiral kagome lattice from simple ditopic molecular bricks

Klaus Kern, Harald Brune, Uta Schlickum, Régis Decker

Self-assembly techniques allow for the fabrication of highly organized architectures with atomic-level precision. Here, we report on molecular-level scanning tunneling microscopy observations demonstrating the supramolecular engineering of complex, regular ...

American Chemical Society2008

Magnetic anisotropy from single atoms to large monodomain islands of Co/]Pt(111)

Harald Brune, Stefano Rusponi, Pietro Gambardella, Nicolas Weiss

By studying the magnetic behavior of self-assembled Co islands on a single-crystal metal surface, Pt(111), we show how the magnetic anisotropy evolves from isolated atoms to monolayer islands and films. Single Co adatoms are found to have a giant magnetocr ...

2005

Asymmetric azide-alkyne Huisgen cycloaddition on chiral metal surfaces

Harald Brune, Samuel Thomas Stolz

Achieving fundamental understanding of enantioselective heterogeneous synthesis is marred by the permanent presence of multitudinous arrangements of catalytically active sites in real catalysts. In this study, we address this issue by using structurally co ...

NATURE RESEARCH2021

Giant Spin-Polarization and Magnetic Anisotropy of Nanostructures at Surfaces

Harald Brune

2006

The Impact of Lattice Distortions on the Magnetic Stability of Single Atoms: Dy and Ho on BaO(100)

Harald Brune, Stefano Rusponi, Marina Pivetta, Darius Constantin Merk, Boris Sorokin, Sébastien Reynaud

X-ray magnetic circular dichroism, atomic multiplet simulations, and density functional theory calculations are employed to identify criteria for the optimum combination of supporting alkaline earth oxide and adsorption site maximizing the spin lifetimes o ...

WILEY-V C H VERLAG GMBH2023

CO Adsorption on a Single-Atom Catalyst Stably Embedded in Graphene

Harald Brune, Francesco Armillotta, Pardis Naderasli

Confined single metal atoms in graphene-based materials have proven to be excellent catalysts for several reactions and promising gas sensing systems. However, whether the chemical activity arises from the specific type of metal atom or is a direct consequ ...

2025

Creating Metal Nanostructures at Metal Surfaces Using Growth Kinetics

Harald Brune

Elsevier2008

High resolution in situ magneto-optic Kerr effect and scanning tunneling microscopy setup with all optical components in UHV

Harald Brune, Stefano Rusponi, Anne Lehnert, Philipp Buluschek, Nicolas Weiss

A surface magneto-optic Kerr effect (MOKE) setup fully integrated in an ultrahigh vacuum chamber is presented. The system has been designed to combine in situ MOKE and scanning tunneling microscopy. Magnetic fields up to 0.3 T can be applied at any angle i ...

2009

Direct capture and electrostatic repulsion in the self-assembly of rare-earth atom superlattices on graphene

Harald Brune, Stefano Rusponi, Marina Pivetta

2018

Giant Spin-Polarization and Magnetic Anisotropy of Nanostructures at Surfaces

Harald Brune

We present spin-polarized scanning tunneling microscopy Measurements demonstrating spin-polarizations of tip to 80 % for Co islands on a Pt(111) surface and a tunnel magneto resistance of 850 similar to% between the islands and an anti-ferromagnetic Cr-co ...

Springer2009

High magnetic moments and anisotropies for FexCo1 - x monolayers on Pt(111)

Harald Brune, Stefano Rusponi, Pietro Gambardella, Anne Lehnert

2008

Formation of Fe Cluster Superlattice in a Metal-Organic Quantum-Box Network

Harald Brune, Marina Pivetta, Uta Schlickum, Giulia Elisabetta Pacchioni

We report on the self-assembly of Fe adatoms on a Cu(111) surface that is patterned by a metal-organic honeycomb network, formed by coordination of dicarbonitrile pentaphenyl molecules with Cu adatoms. Fe atoms landing on the metal surface are mobile and s ...

Amer Physical Soc2013

Interfacial properties of LaMnO3/LaNiO3 superlattices grown along (001) and (111) orientations

Harald Brune, Stefano Rusponi, Jan Gui-Hyon Dreiser

We have employed x-ray absorption spectroscopy and x-ray magnetic circular dichroism (XMCD) at the Ni andMn L-3,L-2 edges in LaMnO3/LaNiO3 superlattices grown along (001) and (111) orientations. Our results show a significant XMCD signal and thus the prese ...

American Physical Society2015