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Stefano Rusponi

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Related publications (59)

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Role of hydrogen in giant spin polarization observed on magnetic nanostructures

Harald Brune, Stefano Rusponi

We demonstrate that the giant spin contrast observed by scanning tunneling microscopy for double-layer Coislands on Pt(111) is caused by adsorbates at the apex of the Cr-coated W tip. The most likely candidate, in ab initio simulations, is hydrogen. Here, ...

2008

Correlation between Electronic Configuration and Magnetic Stability in Dysprosium Single Atom Magnets

Harald Brune, Stefano Rusponi, Marina Pivetta, Jan Gui-Hyon Dreiser, Pietro Gambardella, Fabio Donati, Christian Wäckerlin, Aparajita Singha, Romana Baltic, Edgar Fernandes, Jean-Guillaume De Groot

Single atom magnets offer the possibility of magnetic information storage in the most fundamental unit of matter. Identifying the parameters that control the stability of their magnetic states is crucial to design novel quantum magnets with tailored proper ...

AMER CHEMICAL SOC2021

Large Area Monolayer Graphene Transfer in Ultra-High Vacuum

Harald Brune, Stefano Rusponi, Darius Constantin Merk

Graphene transfer methods either employ support layers that have to be removed after transfer, giving rise to impurities, or are based on delamination from bulk crystals, yielding only small flakes with various thicknesses. We present a graphene transfer m ...

American Chemical Society (ACS)2025

Strong antiferromagnetic exchange between manganese phthalocyanine and ferromagnetic europium oxide

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

We report on the antiferromagnetic exchange coupling between a submonolayer of Mn(II)-phthalocyanine molecules and a ferromagnetic Eu(II)-oxide thin film. The exchange energy is larger by nearly two orders of magnitude compared to previous studies involvin ...

Royal Society of Chemistry2015

Giant apparent lattice distortions in STM images of corrugated sp2-hybridised monolayers

Alfredo Pasquarello, Harald Brune, François Patthey, Stefano Rusponi, Donat Fabian Natterer, Anne Lehnert, Quentin Dubout, Laurent Claude

We report on the strengths and limitations of scanning tunnelling microscopy (STM) when used for characterising atomic-scale features of quasi two-dimensional materials, such as graphene and single layers of hexagonal boron nitride, which may present stron ...

Institute of Physics (IoP) and Deutsche Physikalische Gesellschaft2016

Magnetism and morphology of Co nanocluster superlattices on GdAu2/Au(111)-(13 x 13)

Harald Brune, Stefano Rusponi, Alberto Cavallin

We present a comprehensive study of the magnetism and morphology of an ultrahigh density array of Co nanoclusters self-assembled on the single atomic layer GdAu2 on Au(111) template surface. Combining scanning tunneling microscopy, x-ray magnetic circular ...

American Physical Society2014

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

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

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

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

Element-resolved x-ray ferrimagnetic and ferromagnetic resonance spectroscopy

Giovanni Boero, Stefano Rusponi, Pietro Gambardella, Schahrazede-Lila Mouaziz

Institute of Physics (IoP) and Deutsche Physikalische Gesellschaft2008

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

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

Harald Brune, Stefano Rusponi, Pietro Gambardella, Anne Lehnert

2008

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

Excited Spin-State Trapping in Spin Crossover Complexes on Ferroelectric Substrates

Harald Brune, Stefano Rusponi, Fabio Donati, Christian Wäckerlin, Aparajita Singha, Romana Baltic

2018

X-ray Magnetic Circular Dichroism (XMCD) Study of a Methoxide-Bridged Dy^III-Cr^III Cluster Obtained by Fluoride Abstraction from cis-[Cr^III F_2 (phen)_2]^+

Harald Brune, Stefano Rusponi, Jan Gui-Hyon Dreiser

An isostructural series of dinuclear chromium(III)-lanthanide(III) clusters is formed by fluoride abstraction of cis-CrF2(phen)(2) by Ln(3+) resulting in LnF(3) and methoxide-bridged Cr-Ln clusters (Ln = Nd (1), Tb (2), Dy (3)) of formula [Cr-III(phen ...

Amer Chemical Soc2012

Magnetic properties of 2D islands on single crystal metal surfaces

Harald Brune, Stefano Rusponi

2007