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most citedAdvanced capabilities for materials modelling with Quantum ESPRESSO

7.7k citations

Showing 2012 · cond-mat.mtrl-sciShow all

9 papers · 2 filters

cond-mat.mtrl-sci2012★ 40 cited

Donor and acceptor levels of organic photovoltaic compounds from first principles

Ismaila Dabo, Andrea Ferretti, Cheol-Hwan Park +4

Accurate and efficient approaches to predict the optical properties of organic semiconducting compounds could accelerate the search for efficient organic photovoltaic materials. Ne…

cond-mat.mtrl-sci2012★ 19 cited

Optimal Energy Dissipation in Sliding Friction Simulations

A. Benassi, A. Vanossi, G. E. Santoro +1

Non-equilibrium molecular dynamics simulations, of crucial importance in sliding friction, are hampered by arbitrariness and uncertainties in the removal of the frictionally genera…

cond-mat.mtrl-sci2012★ 35 cited

K-edge X-ray absorption spectra in transition metal oxides beyond the single particle approximation: shake-up many body effects

M. Calandra, J. P. Rueff, C. Gougoussis +7

The near edge structure (XANES) in K-edge X-ray absorption spectroscopy (XAS) is a widely used tool for studying electronic and local structure in materials. The precise interpreta…

cond-mat.mtrl-sci2012★ 42 cited

Ab initio complex band structure of conjugated polymers: Effects of hydrid DFT and GW schemes

Andrea Ferretti, Giuseppe Mallia, Layla Martin-Samos +4

The non-resonant tunneling regime for charge transfer across nanojunctions is critically dependent on the so-called β parameter, governing the exponential decay of the current as t…

cond-mat.mtrl-sci2012★ 27 cited

Raman Spectroscopy of magneto-phonon resonances in Graphene and Graphite

Sarah Goler, Jun Yan, Vittorio Pellegrini +1

The magneto-phonon resonance or MPR occurs in semiconductor materials when the energy spacing between Landau levels is continuously tuned to cross the energy of an optical phonon m…

cond-mat.mtrl-sci2012

Designing all-graphene nanojunctions by covalent functionalization

Caterina Cocchi, Alice Ruini, Deborah Prezzi +2

We investigated theoretically the effect of covalent edge functionalization, with organic functional groups, on the electronic properties of graphene nanostructures and nano-juncti…

cond-mat.mtrl-sci2012★ 34 cited

Optical Excitations and Field Enhancement in Short Graphene Nanoribbons

Caterina Cocchi, Deborah Prezzi, Alice Ruini +4

The optical excitations of elongated graphene nanoflakes of finite length are investigated theoretically through quantum chemistry semi-empirical approaches. The spectra and the re…

cond-mat.mtrl-sci2012★ 42 cited

Precise Determination of Minimum Achievable Temperature for Solid-State Optical Refrigeration

Denis V. Seletskiy, Seth D. Melgaard, Richard I. Epstein +3

We measure the minimum achievable temperature (MAT) as a function of excitation wavelength in anti-Stokes fluorescence cooling of high purity Yb3+-doped LiYF4 (Yb:YLF) crystal. Suc…

cond-mat.mtrl-sci2012★ 116 cited

The bandstructure of gold from many-body perturbation theory

T. Rangel, D. Kecik, P. E. Trevisanutto +3

The bandstructure of gold is calculated using many-body perturbation theory (MBPT). Different approximations within the GW approach are considered. Standard single shot G0W0 correc…