Publications related to Localized electronic states at grain boundaries on the surface of graphene and graphite

Grain morphology reconstruction of crystalline materials from Laue three-dimensional neutron diffraction tomography

Markus Strobl, Marina Garcia Gonzalez, Stavros Samothrakitis

The macroscopic properties of advanced engineering and functional materials are highly dependent on their overall grain orientation distribution, size, and morphology. Here we present Laue 3D neutron diffraction tomography providing reconstructions of the ...

NATURE PUBLISHING GROUP2020

Bulk and Surface Electronic Structure of the Dual-Topology Semimetal Pt2HgSe3

Nicola Marzari, Marco Gibertini, Antimo Marrazzo

We report high-resolution angle-resolved photoemission measurements on single crystals of Pt2HgSe3 grown by high-pressure synthesis. Our data reveal a gapped Dirac nodal line whose (001) projection separates the surface Brillouin zone in topological and tr ...

AMER PHYSICAL SOC2020

Large-scale synthesis of crystalline g-C3N4 nanosheets and high-temperature H-2 sieving from assembled films

Nicola Marzari, Emad Oveisi, Kumar Varoon Agrawal, Mounir Driss Mensi, Davide Campi, Luis Francisco Villalobos Vazquez de la Parra, Zahra Nadizadeh

Poly(triazine imide) (PTI), a crystalline g-C3N4, hosting two-dimensional nanoporous structure with an electron density gap of 0.34 nm, is highly promising for high-temperature hydrogen sieving because of its high chemical and thermal robustness. Currently ...

AMER ASSOC ADVANCEMENT SCIENCE2020

Crystalline and correlated phases in two-dimensional transition metal dichalcogenides

Diego José Pasquier

This thesis is dedicated to the study of various aspects of the electronic structure of two-dimensional transition metal dichalcogenides (TMDs) of chemical composition MX

_2

(where M is a transition metal atom and X= S, Se, Te), using a combination of \te ...

EPFL2019

Crystal Orientation and Grain Size: Do They Determine Optoelectronic Properties of MAPbI(3) Perovskite?

Sandy Sanchez Alonso, Ulf Anders Hagfeldt, Michael Saliba

Growing large, oriented grains of perovskite often leads to efficient devices, but it is unclear if properties of the grains are responsible for the efficiency. Domains observed in SEM are commonly misidentified with crystallographic grains, but SEM images ...

2019

Dynamics of nanoscale systems probed by time-resolved STM-induced luminescence

Anna Maria Roslawska

The efficiency and peculiarities of processes such as surface adsorption or electron-to-photon energy conversion in organic and inorganic structures are determined by the dynamics at the scale of individual molecules, atoms and charges. The timescales of s ...

EPFL2019

Abnormal Grain Growth in AlScN Thin Films Induced by Complexion Formation at Crystallite Interfaces

Paul Muralt, Ramin Matloub Aghdam, Silviu Cosmin Sandu, Stefan Mertin, Mohammad Fazel Parsapour Kolour, Vladimir Pashchenko

Sputter deposited Al(1-x)ScxN thin films with a Sc content from x = 0 to 43 at% are investigated by electron microscopy in order to study and explain the formation and growth of abnormally oriented grains (AOG). It is found that the latter did not nucleate ...

WILEY-V C H VERLAG GMBH2019

Picture of the wet electron: a localized transient state in liquid water

Alfredo Pasquarello, Francesco Ambrosio, Michele Pizzochero

A transient state of the excess electron in liquid water preceding the development of the solvation shell, the so-called wet electron, has been invoked to explain spectroscopic observations, but its binding energy and atomic structure have remained highly ...

2019

Rapid solidification of Al-Cu droplets of near eutectic composition

Michel Rappaz, Jonas Valloton

Near eutectic Al-Cu droplets were rapidly solidified by Impulse Atomization. A wide range of microstructural scales was obtained at different cooling rates and undercoolings. The micrographs of the investigated samples revealed two distinct zones of differ ...

IOP PUBLISHING LTD2019

Koopmans Meets Bethe-Salpeter: Excitonic Optical Spectra without GW

Nicola Marzari, Nicola Colonna, Paolo Umari

The Bethe Salpeter equation (BSE) can be applied to compute from first-principles optical spectra that include the effects of screened electron hole interactions. As input, BSE calculations require single-particle states, quasiparticle energy levels, and t ...

AMER CHEMICAL SOC2019

Localized electronic states at grain boundaries on the surface of graphene and graphite

Graph Chatbot

Chat with Graph Search

Grain morphology reconstruction of crystalline materials from Laue three-dimensional neutron diffraction tomography

Bulk and Surface Electronic Structure of the Dual-Topology Semimetal Pt2HgSe3

Large-scale synthesis of crystalline g-C3N4 nanosheets and high-temperature H-2 sieving from assembled films

Crystalline and correlated phases in two-dimensional transition metal dichalcogenides

Crystal Orientation and Grain Size: Do They Determine Optoelectronic Properties of MAPbI(3) Perovskite?

Dynamics of nanoscale systems probed by time-resolved STM-induced luminescence

Abnormal Grain Growth in AlScN Thin Films Induced by Complexion Formation at Crystallite Interfaces

Picture of the wet electron: a localized transient state in liquid water

Rapid solidification of Al-Cu droplets of near eutectic composition

Koopmans Meets Bethe-Salpeter: Excitonic Optical Spectra without GW

Large-scale synthesis of crystalline g-C3N4 nanosheets and high-temperature H-2 sieving from assembled films

Dynamics of nanoscale systems probed by time-resolved STM-induced luminescence

Crystalline and correlated phases in two-dimensional transition metal dichalcogenides

Abnormal Grain Growth in AlScN Thin Films Induced by Complexion Formation at Crystallite Interfaces

Bulk and Surface Electronic Structure of the Dual-Topology Semimetal Pt2HgSe3

Grain morphology reconstruction of crystalline materials from Laue three-dimensional neutron diffraction tomography

Picture of the wet electron: a localized transient state in liquid water

Crystal Orientation and Grain Size: Do They Determine Optoelectronic Properties of MAPbI(3) Perovskite?

Rapid solidification of Al-Cu droplets of near eutectic composition

Koopmans Meets Bethe-Salpeter: Excitonic Optical Spectra without GW