536 citations · 1.6k across the 13 of their papers we have counts for
13 papers
Nanorod Pair Complexes Manipulated via Magnetic Casimir Forces
S Pal, L. M. Woods, C. Persson +3
Controlling nanoscale interactions to suppress aggregation from short-range attractive forces is a key problem in nanoengineering. Here, we demonstrate a route to modulate Casmir-L…
The Ferroelectric Photo-Groundstate of SrTiO: Cavity Materials Engineering
Simone Latini, Dongbin Shin, Shunsuke A. Sato +4
Optical cavities confine light on a small region in space which can result in a strong coupling of light with materials inside the cavity. This gives rise to new states where quant…
The quantum paraelectric phase of SrTiO from first principles
Dongbin Shin, Simone Latini, Christian Schäfer +4
We demonstrate how the quantum paraelectric ground state of SrTiO can be accessed via a microscopic approach based on density functional theory. At low temperature…
Multiple mobile excitons manifested as sidebands in quasi-one-dimensional metallic TaSe3
Junzhang Ma, Simin Nie, Xin Gui +22
Charge neutrality and their expected itinerant nature makes excitons potential transmitters of information. However, exciton mobility remains inaccessible to traditional optical ex…
Octopus, a computational framework for exploring light-driven phenomena and quantum dynamics in extended and finite systems
Nicolas Tancogne-Dejean, Micael J. T. Oliveira, Xavier Andrade +31
Over the last years extraordinary advances in experimental and theoretical tools have allowed us to monitor and control matter at short time and atomic scales with a high-degree of…
Local Berry curvature signatures in dichroic angle-resolved photoelectron spectroscopy
Michael Schüler, Umberto De Giovannini, Hannes Hübener +3
Topologically nontrivial two-dimensional materials hold great promise for next-generation optoelectronic applications. However, measuring the Hall or spin-Hall response is often a…
Setting the photoelectron clock through molecular alignment
Andrea Trabattoni, Joss Wiese, Umberto De Giovannini +8
The interaction of strong laser fields with matter intrinsically provides powerful tools to image transient dynamics with an extremely high spatiotemporal resolution. Here, we stud…
Efficient and accurate modeling of electron photoemission in nanostructures with TDDFT
Philipp Wopperer, Umberto De Giovannini, Angel Rubio
We review different computational methods for the calculation of photoelectron spectra and angular distributions of atoms and molecules when excited by laser pulses using time-depe…
Tailored pump-probe transient spectroscopy with time-dependent density-functional theory: controlling absorption spectra
Jessica Walkenhorst, Umberto De Giovannini, Alberto Castro +1
Recent advances in laser technology allow us to follow electronic motion at its natural time-scale with ultra-fast time resolution, leading the way towards attosecond physics exper…
Real-space grids and the Octopus code as tools for the development of new simulation approaches for electronic systems
Xavier Andrade, David A. Strubbe, Umberto De Giovannini +13
Real-space grids are a powerful alternative for the simulation of electronic systems. One of the main advantages of the approach is the flexibility and simplicity of working direct…
Modeling electron dynamics coupled to continuum states in finite volumes
Umberto De Giovannini, Ask Hjorth Larsen, Angel Rubio
Absorbing boundaries are frequently employed in real-time propagation of the Schrödinger equation to remove spurious reflections and efficiently emulate outgoing boundary condition…
Modelling the effect of nuclear motion on the attosecond time-resolved photoelectron spectra of ethylene
Alison Crawford-Uranga, Umberto De Giovannini, Duncan John Mowbray +2
Using time dependent density functional theory (TDDFT) we examine the energy, angular and time-resolved photoelectron spectra (TRPES) of ethylene in a pump-probe setup. To simulate…
Simulating pump-probe photo-electron and absorption spectroscopy on the attosecond time-scale with time-dependent density-functional theory
Umberto De Giovannini, Gustavo Brunetto, Alberto Castro +2
Molecular absorption and photo-electron spectra can be efficiently predicted with real-time time-dependent density-functional theory (TDDFT). We show here how these techniques can…