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Scanning tunneling microscopy of the charge density wave in 1T-TiSe2 in the presence of single atom defects

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Assembly of Robust Holmium-Directed 2D Metal-Organic Coordination Complexes and Networks on the Ag(100) Surface

Harald Brune

We describe the formation of lanthanide-organic coordination networks and complexes under ultra-high-vacuum conditions on a clean Ag(100) surface. The structures comprise single Ho atoms as coordination centers and 1,4-benzenedicarboxylate (from terephtali ...

AMER CHEMICAL SOC2018

An electron acceptor molecule in a nanomesh: F(4)TCNQ on h-BN/Rh(111)

Huanyao Cun, Silvan Dino Marcos Roth

The adsorption of molecules on surfaces affects the surface dipole and thus changes in the work function may be expected. The effect in change of work function is particularly strong if charge between substrate and adsorbate is involved. Here we report the ...

ELSEVIER SCIENCE BV2018

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In Ti-intercalated self-doped 1T-TiSe2 crystals, the charge density wave (CDW) superstructure induces two nonequivalent sites for Ti dopants. Recently, it has been shown that increasing Ti doping dramatically influences the CDW by breaking it into phase-sh ...

Amer Physical Soc2017

Correlating microscopy techniques and ToF-SIMS analysis of fully grown mammalian oocytes

Sami Rtimi

The 2D-molecular thin film analysis protocol for fully grown mice oocytes is described using an innovative approach. Time-of-flight secondary ion mass spectrometry (ToF-SIMS), scanning electron microscopy (SEM), atomic force microscopy (AFM) and optical mi ...

Royal Soc Chemistry2016

Short-range phase coherence and origin of the 1T-TiSe2 charge density wave

Helmuth Berger, Elia Razzoli, Philipp Aebi

The impact of variable Ti self-doping on the 1T-TiSe2 charge density wave (CDW) is studied by scanning tunneling microscopy. Supported by density functional theory, we show that agglomeration of intercalated-Ti atoms acts as preferential nucleation centers ...

Amer Physical Soc2016

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The structural and electronic properties of nonstoichiometric low-temperature grown GaAs nanowire shells have been investigated with scanning tunneling microscopy and spectroscopy, pump probe reflectivity, and cathodoluminescence measurements. The growth o ...

American Chemical Society2015

Pulsed laser deposition growth of 3D ZnO nanowall network in nest-like structures by two-step approach

Gwénolé Jean Jacopin, Mahmoud Saeed Qaid Mohammad Hezam

The mechanism for the growth of 3D ZnO nanowall networks in nest-like structure by a pulsed laser deposition (PLD) technique have been investigated for dye sensitized solar cells (DSSCs) and biosensor applications. As complex oxides shift towards large vol ...

Elsevier2015

Covalent coupling via dehalogenation on Ni(111) supported boron nitride and graphene

Klaus Kern, Claudius Morchutt

Polymerization of 1,3,5-tris(4-bromophenyl) benzene via dehalogenation on graphene and hexagonal boron nitride is investigated by scanning tunneling microscopy experiments and density functional theory calculations. This work reveals how the interactions b ...

Royal Soc Chemistry2015

Microscopic evidence for strong periodic lattice distortion in two-dimensional charge-density wave systems

Helmuth Berger, Ji Dai

In quasi-two-dimensional electron systems of layered transition metal dichalcogenides (TMDs) there is still controversy about the nature of the transitions to charge-density wave (CDW) phases, i.e., whether they are described by a Peierls-type mechanism or ...

Amer Physical Soc2014

Electronic and magnetic properties of bulk Cr tips for scanning tunneling spectroscopy

Fabio Donati

The electronic and magnetic properties of bulk Cr tips for scanning tunneling microscopy have been investigated by means of density functional theory (DFT) calculations and scanning tunneling spectroscopy (STS) measurements. Spin-resolved densities of stat ...

American Physical Society2013