605 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Czech Academy of SciencesCZ20 papers
- FZU ‒ Institute of Physics of the Academy of Sciences of the Czech RepublicCZ13 papers
- Central European Institute of TechnologyCZ11 papers
- Masaryk UniversityCZ8 papers
- TU WienAT7 papers
- Central European Institute of Technology – Masaryk UniversityCZ5 papers
- Charles UniversityCZ5 papers
- Max-Planck-Institut für Nachhaltige MaterialienDE5 papers
- Montanuniversität LeobenAT5 papers
- Delft University of TechnologyNL4 papers
- Forschungszentrum JülichDE4 papers
- Institute of Chemistry of the Slovak Academy of SciencesSK4 papers
53 papers
Efficient implementation of single particle Hamiltonians in exponentially reduced qubit space
Martin Plesch, Martin Friák, Ijaz Ahamed Mohammad
Current and near-term quantum hardware is constrained by limited qubit counts, circuit depth, and the high cost of repeated measurements. We address these challenges for solid stat…
Mesoscale FEM Model of Concrete: Statistical Assessment of Inherent Stress Concentrations in Dependence on Phase Heterogeneity
Jan Mašek, Petr Miarka
Concrete heterogeneity originates from its production process, which involves bonding aggregates with a binder matrix. This study presents a mesoscale finite element model (MFEM) t…
Intrinsic spin currents in bulk noncentrosymmetric ferromagnets
Ilja Turek
Intrinsic spin currents are encountered in noncentrosymmetric crystals without any external electric fields; these currents are caused by spin-orbit interaction. In this paper, var…
Vacancy-induced pseudo-gap formation in antiferromagnetic CrZnSb
Michael Parzer, Fabian Garmroudi, Herwig Michor +7
Structural defects are important for both solid-state chemistry and physics, as they can have a significant impact on chemical stability and physical properties. Here, we identify…
Damage Localisation in Fresh Cement Mortar Observed via In Situ (Timelapse) X-ray μCT imaging
Petr Miarka, Daniel Kytýř, Petr Koudelka +1
This paper presents the outcome of a study focused on the evolution of internal damage in fresh cement mortar over 25 hours of hardening. In situ timelapse X-ray computed micro-tom…
Resource-efficient utilization of quantum computers
Ijaz Ahamed Mohammad, Matej Pivoluska, Martin Plesch
The current state of quantum computing is commonly described as the Noisy Intermediate-Scale Quantum era. Available computers contain a few dozens of qubits and can perform a few d…
Role of Dy on the magnetic properties of orthorhombic DyFeO3
Banani Biswas, Veronica F. Michel, Oystein S. Fjellvag +12
Orthoferrites are a class of magnetic materials with a magnetic ordering temperature above 600 K, predominant G-type antiferromagnetic ordering of the Fe-spin system and, depending…
Interpretation of field emission current-voltage data: background theory and detailed simulation testing of a user-friendly webtool
Mohammad M. Allaham, Richard G. Forbes, Alexandr Knapek +4
In field electron emission (FE) studies, to interpret current-voltage data and extract characterization parameters, we use smooth planar metal-like emitter (SPME) methodology and a…
Altermagnetism and magnetic groups with pseudoscalar electron spin
Ilja Turek
We revise existing group-theoretical approaches for a treatment of nonrelativistic collinear magnetic systems with perfect translation invariance. We show that full symmetry groups…
Best-practice aspects of quantum-computer calculations: A case study of hydrogen molecule
Ivana Miháliková, Martin Friák, Matej Pivoluska +3
Quantum computers are reaching one crucial milestone after another. Motivated by their progress in quantum chemistry, we have performed an extensive series of simulations of quantu…
The Cost of Improving the Precision of the Variational Quantum Eigensolver for Quantum Chemistry
Ivana Miháliková, Matej Pivoluska, Martin Plesch +3
Quantum computing brings a promise of new approaches into computational quantum chemistry. While universal, fault-tolerant quantum computers are still not available, we want to uti…
Orientation-related twinning and dislocation glide in a Cantor High Entropy Alloy at room and cryogenic temperature studied by in situ TEM straining
Daniela Oliveros, Anna Fraczkiewicz, Antonin Dlouhy +4
In situ straining experiments were performed in a TEM on an equimolar CoCrFeMnNi (Cantor) high entropy alloy at room and cryogenic temperature. Perfect and partial dislocation acti…
Methods of electron transport in ab initio theory of spin stiffness
Ilja Turek, Josef Kudrnovsky, Vaclav Drchal
We present an ab initio theory of the spin-wave stiffness tensor for ordered and disordered itinerant ferromagnets with pair exchange interactions derived from a method of infinite…
Antiferromagnetic CuMnAs: Ab initio description of finite temperature magnetism and resistivity
David Wagenknecht, Karel Výborný, Karel Carva +1
Noncollinear magnetic moments in antiferromagnets (AFM) lead to a complex behavior of electrical transport, even to a decreasing resistivity due to an increasing temperature. Prope…
Point-defect engineering of MoN/TaN superlattice films: A first-principles and experimental study
Nikola Koutná, Rainer Hahn, Jakub Zálešák +6
Superlattice architecture represents an effective strategy to improve performance of hard protective coatings. Our model system, MoN/TaN, combines materials well-known for their hi…
Ab initio theory of the spin-dependent conductivity tensor and the spin Hall effect in random alloys
Ilja Turek, Josef Kudrnovsky, Vaclav Drchal
We present an extension of the relativistic electron transport theory for the standard (charge) conductivity tensor of random alloys within the tight-binding linear muffin-tin orbi…
Critical Observability for Automata and Petri Nets
Tomáš Masopust
Critical observability is a property of cyber-physical systems to detect whether the current state belongs to a set of critical states. In safety-critical applications, critical st…
Deciding Detectability for Labeled Petri Nets
Tomas Masopust, Xiang Yin
Detectability of discrete event systems (DESs) is a property to determine a priori whether the current and subsequent states can be determined based on observations. In this paper,…
Photo-Hall effect spectroscopy with enhanced illumination in p-Cd1-xMnxTe showing negative differential photoconductivity
A. Musiienko, R. Grill, P. Moravec +4
We studied deep levels (DLs) in p-type CdMnTe by photo-Hall effect spectroscopy with enhanced illumination. We showed that the mobility of minority and majority carriers can be ded…
Nanofeatures Induced by Severe Shot Peening (SSP) on Magnesium Alloy AZ31
Sara Bagherifard, Daniel J. Hickey, Stanislava Fintová +5
Considering the sensitivity of both fatigue strength and corrosion rate to the surface characteristics, apposite surface treatments could address the related challenges for biodegr…
Complexity of Detectability, Opacity and A-Diagnosability for Modular Discrete Event Systems
Tomáš Masopust, Xiang Yin
We study the complexity of deciding whether a modular discrete event system is detectable (resp. opaque, A-diagnosable). Detectability arises in the state estimation of discrete ev…
Dual-wavelength Photo-Hall effect spectroscopy of deep levels in high resistive CdZnTe with negative differential photoconductivity
A. Musiienko, R. Grill, P. Moravec +6
Photo-Hall effect spectroscopy was used in the study of deep levels in high resistive CdZnTe. The monochromator excitation in the photon energy range 0.65-1.77 eV was complemented…
Stability and elasticity of metastable solid solutions and superlattices in the MoN-TaN system: a first-principles study
Nikola Koutná, David Holec, Martin Friák +2
Employing ab initio calculations, we discuss chemical, mechanical, and dynamical stability of MoN-TaN solid solutions together with cubic-like MoN/TaN superlattices, as another mat…
Ab initio explanation of disorder and off-stoichiometry in Fe-Mn-Al-C kappa carbides
P. Dey, R. Nazarov, B. Dutta +6
Carbides play a central role for the strength and ductility in many materials. Simulating the impact of these precipitates on the mechanical performance requires the knowledge abou…