Publications de Daniela Pacilè

Insight into the electronic structure of semiconducting epsilon-GaSe and epsilon-InSe

Helmuth Berger, Marco Grioni, Daniela Pacilè, Alberto Crepaldi

Metal monochalcogenides (MX) have recently been rediscovered as two-dimensional materials with electronic properties highly dependent on the number of layers. Although some intriguing properties appear in the few-layer regime, the carrier mobility of MX co ...

AMER PHYSICAL SOC2020

Structural investigation of InSe layered semiconductors

Helmuth Berger, Daniela Pacilè

During the last decade, III-VI layered semiconductors (GaSe, InSe, GaS, etc.) have emerged as potential candidates for various applications, such as FET and optoelectronic devices. The properties of this class of layered materials are strongly dependent on ...

2020

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

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

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

Electronic properties and atomic structure of graphene oxide membranes

Klaus Kern, Daniela Pacilè, Marko Burghard, Ravi Shankar Sundaram

We have performed a near-edge X-ray absorption fine-structure (NEXAFS) and a transmission electron microscopy (TEM) investigation of freely suspended graphene oxide (GO) sheets. We utilized a photoemission electron microscope to identify GO membranes and t ...

2011

Comment on "Quantum Key Distribution with Classical Bob'' Reply

Marco Grioni, Daniela Pacilè

A Reply to the Comment by Hae-Kyung Jeong et al. ...

American Physical Society2009

Spin-orbit split two-dimensional electron gas with tunable Rashba and Fermi energy

Klaus Kern, Marco Grioni, Daniela Pacilè, Luca Moreschini

We demonstrate that it is possible to tune the Rashba energy, introduced by a strong spin-orbit splitting, and the Fermi energy in a two-dimensional electron gas by a controlled change of stoichiometry in an artificial surface alloy. In the BixPb1-x/Ag(111 ...

2008

Near-edge x-ray absorption fine-structure investigation of graphene

Marco Grioni, Daniela Pacilè

We report the near-edge x-ray absorption fine-structure (NEXAFS) spectrum of a single layer of graphite (graphene) obtained by micromechanical cleavage of highly ordered pyrolytic graphite on a SiO2 substrate. We utilized a photoemission electron microscop ...

American Physical Society2008

Giant spin splitting through surface alloying

Klaus Kern, Marco Grioni, Daniela Pacilè, Luca Moreschini

The long-range ordered surface alloy Bi/Ag(111) is found to exhibit a giant spin splitting of its surface electronic structure due to spin-orbit coupling, as is determined by angle-resolved photoelectron spectroscopy. First-principles electronic structure ...

American Physical Society2007

Photoemission and optical studies of ZrSe3, HfSe3, and ZrS3

Helmuth Berger, Marco Grioni, Daniela Pacilè

Angle-resolved photoemission spectroscopy (ARPES) and optical measurements were performed on single crystal samples of ZrSe3, HfSe3, and ZrS3, which belong to the class of low-dimensional band insulators. By ARPES, we traced the dispersion of the (S 3p, Se ...

2007

Local detection of spin-orbit splitting by scanning tunneling spectroscopy

Klaus Kern, Marco Grioni, Daniela Pacilè, Luca Moreschini, Peter Wahl

We demonstrate that the spin-orbit coupling of two-dimensional surface states can be detected locally by scanning-tunneling spectroscopy (STS). The spin splitting of the surface state induces a singularity in the local density of states which can be detect ...

2007

Electronic structure of an ordered Pb/Ag(111) surface alloy: Theory and experiment

Marco Grioni, Christian Reinhard Ast, Daniela Pacilè, Luca Moreschini

We have studied by angle-resolved photoelectron spectroscopy (ARPES) the band structure of the ordered surface alloy obtained by the deposition of 0.33 monolayers of Pb on the Ag(111) surface. We observe several dispersing features which are well described ...

2006

Electronic structure of one-dimensional copper oxide chains in LiCu2O2 from angle-resolved photoemission and optical spectroscopy

Helmuth Berger, Marco Grioni, Daniela Pacilè

Angle-resolved photoemission (ARPES) and optical measurements were performed on single crystal samples of LiCu2O2, an antiferromagnetic S=1/2 spin-chain compound. The ARPES spectra show several dispersive branches associated with hybrid copper-oxygen state ...

2006

Orbital selective overlayer-substrate hybridization in a Pb monolayer on Ag(111)

Thomas Gloor, Harald Brune, Klaus Kern, Marco Grioni, Stephan Fedrigo, Frédéric Mila, Daniela Pacilè

The electronic structure of a Pb overlayer on Ag(111) has been studied by angle-resolved photoemission spectroscopy. We identify three p bands. While the p(xy) bands are sharp and closely resemble the corresponding bands of a free-standing Pb layer, the p( ...

2006

Photoemission as a probe of coexisting and conflicting periodicities in low-dimensional solids

Helmuth Berger, Marco Grioni, Luca Perfetti, Christian Reinhard Ast, Daniela Pacilè

When two different periodic potentials are present at the same time in a solid, the electron wavefunctions must conform to the resulting overall periodicity. It is the case of the broken-symmetry phases which are often observed in low-dimensional systems. ...

Institute of Physics (IoP) and Deutsche Physikalische Gesellschaft2005