40.2k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Ludwig-Maximilians-Universität MünchenDE49 papers
- FZU ‒ Institute of Physics of the Academy of Sciences of the Czech RepublicCZ39 papers
- Czech Technical University in PragueCZ35 papers
- Charles UniversityCZ34 papers
- Centre National de la Recherche ScientifiqueFR31 papers
- Czech Academy of SciencesCZ28 papers
- Paul Scherrer InstituteCH27 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR24 papers
- Université Paris-SaclayFR20 papers
- CEA Paris-SaclayFR19 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di GenovaIT19 papers
- HUN-REN Wigner Research Centre for PhysicsHU18 papers
22 papers · 1 filter
Finite element method and isogeometric analysis in electronic structure calculations: convergence study
Robert Cimrman, Matyáš Novák, Radek Kolman +2
We compare convergence of isogeometric analysis (IGA), a spline modification of finite element method (FEM), with FEM in the context of our real space code for ab-initio electronic…
Spin Mapping of Surface and Bulk Rashba States in Ferroelectric a-GeTe(111) Films
H. J. Elmers, R. Wallauer, M. Liebmann +16
A comprehensive mapping of the spin polarization of the electronic bands in ferroelectric a-GeTe(111) films has been performed using a time-of-flight momentum microscope equipped w…
A hierarchy of Poisson brackets in non-equilibrium thermodynamics
Michal Pavelka, Vaclav Klika, Ogul Esen +1
Reversible evolution of macroscopic and mesoscopic systems can be conveniently constructed from two ingredients: an energy functional and a Poisson bracket. The goal of this paper…
Structure stability and magnetism in graphene impurity complexes with embedded V and Nb atoms
Jyoti Thakur, Manish K. Kashyap, Hardev S. Saini +1
First-principles density functional theory (DFT) study of embedding V and Nb atom in monovacant and divacant graphene is reported. Complete/almost complete spin polarization is ver…
Energetic, spatial and momentum character of a buried interface: the two-dimensional electron gas between two metal oxides
S. Nemšák, G. Conti, A. X. Gray +32
The interfaces between two condensed phases often exhibit emergent physical properties that can lead to new physics and novel device applications, and are the subject of intense st…
Multiferroic heterostructures for spin filter application - an ab initio study
Stephan Borek, Jürgen Braun, Hubert Ebert +1
Novel imaging spin-filter techniques, which are based on low energy electron diffraction, are currently of high scientific interest. To improve the spin-detection efficiency a vari…
Temperature dependent determination of electron heat capacity and electron-phonon factor for FeCrNi
Jan Winter, Jürgen Sotrop, Stephan Borek +2
A theoretical approach using ab initio calculations has been applied to study the interaction of an ultra-short laser pulse with the metal alloy FeCrNi (A…
Jordan-like characterization of automorphism groups of planar graphs
Pavel Klavík, Roman Nedela, Peter Zeman
We investigate automorphism groups of planar graphs. The main result is a complete recursive description of all abstract groups that can be realized as automorphism groups of plana…
Planar graphs have two-coloring number at most 8
Zdeněk Dvořák, Adam Kabela, Tomáš Kaiser
We prove that the two-colouring number of any planar graph is at most 8. This resolves a question of Kierstead et al. [SIAM J. Discrete Math.~23 (2009), 1548--1560]. The result is…
Do PageRank-based author rankings outperform simple citation counts?
Dalibor Fiala, Lovro Šubelj, Slavko Žitnik +1
The basic indicators of a researcher's productivity and impact are still the number of publications and their citation counts. These metrics are clear, straightforward, and easy to…
Ultrafast spin polarization control of Dirac fermions in topological insulators
J. Sánchez-Barriga, E. Golias, A. Varykhalov +7
Three-dimensional topological insulators (TIs) are characterized by spin-polarized Dirac-cone surface states that are protected from backscattering by time-reversal symmetry. Contr…
Catenoidal layers for the Allen-Cahn equation in bounded domains
O. Agudelo, Manuel del Pino, Juncheng Wei
In this paper we present a new family of solutions to the singularly perturbed Allen-Cahn equation where , is a smoot…
Ab initio calculation of Spin-Polarized Low-Energy Electron Diffraction Pattern for the systems Fe(001) and Fe(001)-p(1x1)-O
S. Borek, J. Braun, J. Minár +1
The construction of a multi-channel vector spin polarimeter requires the development of a new detector type, which works as a spin polarizing mirror with high reflectivity and asym…
First order limits of sparse graphs: Plane trees and path-width
Jakub Gajarsky, Petr Hlineny, Tomas Kaiser +5
Nesetril and Ossona de Mendez introduced the notion of first order convergence as an attempt to unify the notions of convergence for sparse and dense graphs. It is known that there…
Surface versus bulk contributions to the giant Rashba splitting in the ferroelectric α-GeTe(111) semiconductor
J. Krempaský, H. Volfová, S. Muff +14
In systems with broken inversion symmetry spin-orbit coupling (SOC) yields a Rashba-type spin splitting of electronic states, manifested in a k-dependent splitting of the bands. Wh…
Monitoring surface resonances on Co2MnSi(100) by spin-resolved photoelectron spectroscopy
J. Braun, M. Jourdan, A. Kronenberg +10
The magnitude of the spin polarization at the Fermi level of ferromagnetic materials at room temperature is a key property for spintronics. Investigating the Heusler compound Co$_2…
The Dual Diameter of Triangulations
Matias Korman, Stefan Langerman, Wolfgang Mulzer +3
Let $\Poly$ be a simple polygon with vertices. The \emph{dual graph} $\triang^*$ of a triangulation~$\triang$ of~$\Poly$ is the graph whose vertices correspond to the bounded f…
Evidence for non-exponential elastic proton-proton differential cross-section at low |t| and sqrt(s) = 8 TeV by TOTEM
TOTEM Collaboration, G. Antchev, P. Aspell +80
The TOTEM experiment has made a precise measurement of the elastic proton-proton differential cross-section at the centre-of-mass energy sqrt(s) = 8 TeV based on a high-statistics…
Network-based statistical comparison of citation topology of bibliographic databases
Lovro Šubelj, Dalibor Fiala, Marko Bajec
Modern bibliographic databases provide the basis for scientific research and its evaluation. While their content and structure differ substantially, there exist only informal notio…
New patterns of travelling waves in the generalized Fisher-Kolmogorov equation
Pavel Drabek, Peter Takac
We prove the existence and uniqueness of a family of travelling waves in a degenerate (or singular) quasilinear parabolic problem that may be regarded as a generalization of the se…
Unilateral regulation breaks regularity of Turing patterns
Tomas Vejchodsky, Filip Jaros, Milan Kucera +1
We consider a reaction-diffusion system undergoing Turing instability and augment it by an additional unilateral source term. We investigate its influence on the Turing instability…
Electron-electron interaction strength in ferromagnetic nickel determined by spin-polarized positron annihilation
Hubert Ceeh, Josef-Andreas Weber, Peter Böni +7
The two-photon momentum distribution of annihilating electron-positron pairs in ferromagnetic nickel (Ni) was determined by measuring the spin-polarized two-dimensional angular cor…