19 citations · 144 across the 19 of their papers we have counts for
19 papers
Revealing the innate sub-nanometer porous structure of carbon nanomembranes with molecular dynamics simulations and highly charged ion spectroscopy
Filip Vuković, Anna Niggas, Levin Mihlan +8
Carbon nanomembranes (CNMs) are nanometer-thin disordered carbon materials that are suitable for a range of applications, from energy generation and storage, through to water filtr…
Non-ergodic one-magnon magnetization dynamics of the kagome lattice antiferromagnet
H. Schlüter, J. Schnack, J. Eckseler
The present view of modern physics on non-equilibrium dynamics is that generic systems equilibrate or thermalize under rather general conditions, even closed systems under unitary…
Escaping the Krylov space during finite precision Lanczos
J. Eckseler, M. Pieper, J. Schnack
The Lanczos algorithm, introduced by Cornelius Lanczos, has been known for a long time and is widely used in computational physics. While often employed to approximate extreme eige…
Comparison of various schemes to determine the Young's modulus of disordered carbon nanomembranes compared to crystalline graphene
L. Mihlan, J. Ehrens, J. Schnack
The determination of mechanical properties such as the Young's modulus provides an important means to compare classical molecular dynamics simulations with materials. In this respe…
The magnetization process of classical Heisenberg magnets with non-coplanar cuboc ground states
Johannes Richter, Heinz-Jürgen Schmidt, Jürgen Schnack
We consider a classical Heisenberg model on the kagomé and the square kagomé lattice, where at zero magnetic field non-coplanar cuboctahedral ground states with twelve sublattices…
Permanent oscillations and solitary wave behavior in flatband Heisenberg quantum spin systems
J. Eckseler, J. Schnack
Research on the emergence of thermodynamics in closed quantum systems under unitary time evolution arrived at the consensus that generic systems equilibrate under rather general as…
Thermodynamics of the hyperkagome-lattice Heisenberg antiferromagnet
Taras Hutak, Taras Krokhmalskii, Jürgen Schnack +2
The hyperkagome-lattice Heisenberg antiferromagnet allows to study the interplay of geometrical frustration and quantum as well as thermal fluctuations in three dimensions.…
Magneto- and barocaloric properties of the ferro-antiferromagnetic sawtooth chain
N. Reichert, H. Schlüter, T. Heitmann +3
Materials that are susceptible to pressure and external magnetic fields allow the combined use of both for caloric processes. Here we report investigations of the ferromagnetic-ant…
Non-ergodic one-magnon magnetization dynamics of the antiferromagnetic delta chain
F. Johannesmann, J. Eckseler, H. Schlüter +1
We investigate the one-magnon dynamics of the antiferromagnetic delta chain as a paradigmatic example of tunable equilibration. Depending on the ratio of nearest and next-nearest e…
Non-equilibration, synchronization, and time crystals in isotropic Heisenberg models
P. Reimann, P. Vorndamme, J. Schnack
Isotropic but otherwise largely arbitrary Heisenberg models in the presence of a homogeneous magnetic field are considered, including various integrable, non-integrable, as well as…
Magnetism of the - square-kagome lattice antiferromagnet
Johannes Richter, Jürgen Schnack
The spin- Heisenberg antiferromagnet on the square-kagome (SK) lattice has attracted growing attention as a model system of highly frustrated quantum magnetism. A further moti…
Studies of decoherence in strongly anisotropic spin triangles with toroidal or general non-collinear easy axes
K. Irländer, J. Schnack
Magnetic molecules are investigated with respect to their usability as units in future quantum devices. In view of quantum computing, a necessary prerequisite is a long coherence t…
Toroidal magnetic molecules stripped to their basics
Daniel Pister, Kilian Irländer, Dennis Westerbeck +1
Molecular magnetic toroidal moments are molecule-based structures of quantum spins that are expected to boost magnetic storage technology and quantum computing. We study selected f…
Melting of magnetization plateaus for kagome and square-kagome lattice antiferromagnets
H. Schlüter, J. Richter, J. Schnack
Unconventional features of the magnetization curve at zero temperature such as plateaus or jumps are a hallmark of frustrated spin systems. Very little is known about their behavio…
Frustrated magnetism of spin-1/2 Heisenberg diamond and octahedral chains as a statistical-mechanical monomer-dimer problem
J. Strecka, T. Verkholyak, J. Richter +3
It is evidenced that effective lattice-gas models of hard-core monomers and dimers afford a proper description of low-temperature features of spin-1/2 Heisenberg diamond and octahe…
Electric field driven flat bands: Enhanced magnetoelectric and electrocaloric effects in frustrated quantum magnets
Johannes Richter, Vadim Ohanyan, Jörg Schulenburg +1
The - quantum spin sawtooth chain is a paradigmatic one-dimensional frustrated quantum spin system exhibiting unconventional ground-state and finite-temperature propertie…
Accuracy of the typicality approach using Chebyshev polynomials
H. Schlüter, F. Gayk, H. -J. Schmidt +2
Trace estimators allow to approximate thermodynamic equilibrium observables with astonishing accuracy. A prominent representative is the finite-temperature Lanczos method (FTLM) wh…
Observation of phase synchronization and alignment during free induction decay of quantum spins with Heisenberg interactions
P. Vorndamme, H. -J. Schmidt, Chr. Schröder +1
Equilibration of observables in closed quantum systems that are described by a unitary time evolution is a meanwhile well-established phenomenon apart from a few equally well-estab…
Magnetization curves of deposited finite spin chains
H. -T. Langwald, J. Schnack
The characterization and manipulation of deposited magnetic clusters or molecules on surfaces is a prerequisite for their future utilization. In recent years techniques like spin-f…