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Incorporating a monolayer of WS$_2$ via interface engineering enhances the overall physical properties of a FAPbI3 perovskite based heterostructure. FAPbI$_3$/WS$_2$/TiO$_2$/ITO and FAPbI$_3$/TiO$_2$/ITO heterostructures were analyzed by…

Polymer electrolytes are intensely investigated for use as solid electrolytes in next generation lithium-ion and lithium-metal batteries. However, little is known about the structural and dynamical properties of polymer electrolytes close…

Soft Condensed Matter · Physics 2021-12-02 Andreas Thum , Diddo Diddens , Andreas Heuer

The bi-alkali pnictogens have attracted significant attention for optoelectronic and photocathodic device applications. However, in most of the compounds belonging to this family, there has been less effort put into investigating the…

Materials Science · Physics 2023-02-27 Seyed Mohammad bagher Malek Hosseini , Shahram Yalameha

Understanding and controlling the photoexcited quasiparticle (QP) dynamics in monolayer transition metal dichalcogenides lays the foundation for exploring the strongly interacting, non-equilibrium 2D quasiparticle and polaritonic states in…

Materials Science · Physics 2024-10-04 Akiyoshi Park , Rohit Kantipudi , Jonas Göser , Yinan Chen , Duxing Hao , Nai-Chang Yeh

We employ {\it{ab-initio}} calculations to investigate the charge density waves in single-layer NbSe$_2$, and we explore how they are affected by transition metal atoms. Our calculations reproduce the observed orthorhombic phase in…

Natural oxidation is a common degradation mechanism of both mechanical and electronic properties for most of the new two-dimensional materials. From another perspective, controlled oxidation is an option to tune material properties,…

Mesoscale and Nanoscale Physics · Physics 2016-12-21 I. S. S. de Oliveira , R. Longuinhos

We use ab initio density functional calculations to study hydrogen-induced disintegration of single- and multi-wall carbon fullerenes and nanotubes. Our results indicate that hydrogen atoms preferentially chemisorb along lines in sp2 bonded…

Mesoscale and Nanoscale Physics · Physics 2009-09-08 Savas Berber , David Tomanek

Colloidal two-dimensional lead chalcogenide nanocrystals represent an intriguing new class of materials that push the boundaries of quantum confinement by combining a crystal thickness down to the monolayer with confinement in the lateral…

Molecular beam experiments that use low-temperature bolometers as (energy-) detectors are well suited to the study of physisorption and recombination of hydrogen on low-temperature surfaces. Experiments where this technique is combined with…

Chemical Physics · Physics 2007-05-23 Thomas Govers

One prominent structural feature of ionic liquids near surfaces is formation of alternating layers of anions and cations. However, how this layering responds to applied potential is poorly understood. We focus on the structure of…

Using the pseudopotential density functional method, we find that a Be atom on a nanostructure with H2 molecules forms a Be-dihydrogen complex through the hybridization of the Be s or p orbits with the H2 sigma orbits and the binding energy…

Materials Science · Physics 2015-05-18 Hoonkyung Lee , Bing Huang , Wenhui Duan , Jisoon Ihm

The possibility of the formation of an electron-hole liquid in the type II heterostructures based on monolayers (bilayers) of transition metal dichalcogenides is considered. It is indicated that additional valleys in the conduction band,…

Mesoscale and Nanoscale Physics · Physics 2022-06-22 Pavel V. Ratnikov

Large, high-quality layers of hexagonal boron nitride (hBN) are a prerequisite for further advancement in scientific investigation and technological utilization of this exceptional 2D material. Here we address this demand by investigating…

Mesoscale and Nanoscale Physics · Physics 2019-12-23 Marin Petrović , Michael Horn-von Hoegen , Frank-J. Meyer zu Heringdorf

The structural and electronic properties of hexagonal boron nitride (hBN) grown on stepped Ni surfaces are systematically investigated using a cylindrical Ni crystal as a tunable substrate. Our experiments reveal homogeneous hBN monolayer…

Materials Science · Physics 2023-01-30 L. Fernandez , A. A. Makarova , C. Laubschat , D. V. Vyalikh , D. Yu. Usachov , J. E. Ortega , F. Schiller

We show the possibility of tailoring the molecular arrangement, as well as the chemical and structural modifications, of porphyrins at the monolayer saturation coverage on TiO2(110) by Synchrotron photoemission, electron diffraction, STM…

Hydrogen (H) plays a key role in the near-to-room temperature superconductivity of hydrides at megabar pressures. This suggests that H doping could have similar effects on the electronic and phononic spectra of materials at ambient pressure…

Monolayer molybdenum disulfide (MoS2) has a honeycomb crystal structure. We consider the triangular sublattice of molybdenum atoms and introduce a simple tight-binding Hamiltonian for studying the phase transition and topological…

Mesoscale and Nanoscale Physics · Physics 2019-12-30 Hamidreza Simchi

The passivation of thin Bi(1 1 1) films with hydrogen and oxide capping layers is investigated from first principles. Considering termination-related changes of the crystal structure, we show how the bands and density of states are…

Materials Science · Physics 2022-08-29 Christian König , James C. Greer , Stephen Fahy

High-manganese twinning-induced plasticity (TWIP) steels exhibit high strain hardening, high tensile strength, and high ductility, which make them attractive for structural applications. At low tensile strain rates, TWIP steels are prone to…

Materials Science · Physics 2023-04-27 Heena Khanchandani , Dirk Ponge , Stefan Zaefferer , Baptiste Gault

Hydrogen, the smallest and most abundant element in nature, can be efficiently incorporated within a solid and drastically modify its electronic state - it has been known to induce novel magnetoelectric effects in complex perovskites and…

Materials Science · Physics 2022-04-21 Haiming Deng , Lukas Zhao , Kyungwha Park , Jiaqiang Yan , Kamil Sobczak , Lia Krusin-Elbaum
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