98 citations · 437 across the 27 of their papers we have counts for
30 papers
Optically driven ultrafast lattice contraction in a topological crystalline insulator
M. H. Berntsen, W. Chen, D. Phuyal +9
The ability to dynamically control topological order remains a central challenge in the exploration of quantum materials. Here, we investigate the lattice and electronic response o…
The phonomagnet: Spontaneous order of phonon angular momentum
Maike Fahrensohn, R. Matthias Geilhufe
Magnetism is a fundamental property of matter, typically arising from collective ordering of electronic spin and orbital angular momentum. Other quasiparticles interact with magnet…
Superconductivity in a Two-Orbital Hatsugai-Kohmoto Model at Half Filling
Nico Hahn, R. Matthias Geilhufe
Multiband superconductivity gives rise to a rich landscape of possible pairing states. Here we study superconductivity emerging from a half-filled normal state in a two-orbital ext…
Quantifying non-Markovianity in magnetization dynamics via entropy production rates
Felix Hartmann, Finja Tietjen, R. Matthias Geilhufe +1
Magnetization dynamics is commonly described by the stochastic Landau-Lifshitz-Gilbert (LLG) equation. On picosecond timescales, inertial and open-system extensions of the LLG equa…
Inertial Repulsion from Quantum Geometry
Maike Fahrensohn, R. Matthias Geilhufe
We derive a repulsive, charge-dipole-like interaction for a Dirac particle in a rotating frame, arising from a geometric gauge symmetry associated with the Berry phase. The…
Axial phono-magnetic effects
Natalia Shabala, Finja Tietjen, R. Matthias Geilhufe
Axial or circularly polarized phonons are collective lattice vibrations with angular momentum. Over the past decade they have emerged as a promising mechanism for the manipulation…
Collective Buckling in Metal-Organic Framework Materials
Nico Hahn, Lars Öhrström, R. Matthias Geilhufe
We develop a framework to describe collective buckling in metal-organic frameworks (MOFs). Starting from the microscopic structure of a single organic linker, we define a buckling…
Prediction of Molecular Single-Photon Emitters: A Materials-Modelling Approach
Erik Karlsson Öhman, Daqing Wang, R. Matthias Geilhufe +1
Interfacing light with quantum systems is an integral part of quantum technology, with the most essential building block being single-photon emitters. Although various platforms ex…
Correlated Electrons and Magnetism in Double Perovskites
Gayanath W. Fernando, Saikat Banerjee, R. Matthias Geilhufe
This paper is an overview of some recent work done on the double perovskites. We discuss the physics of selected double perovskite compounds emphasizing the relevant interactions a…
Ultrafast Entropy Production in Non-Equilibrium Magnets
Finja Tietjen, R. Matthias Geilhufe
We present an ultrafast thermodynamics framework to model heat generation and entropy production in laser-driven ferromagnetic systems. By establishing a connection between the mag…
Phonon Inverse Faraday effect from electron-phonon coupling
Natalia Shabala, R. Matthias Geilhufe
The phonon inverse Faraday effect describes the emergence of a DC magnetization due to circularly polarized phonons. In this work we present a microscopic formalism for the phonon…
Ultrafast entropy production in pump-probe experiments
Lorenzo Caprini, Hartmut Löwen, R. Matthias Geilhufe
The ultrafast control of materials has opened the possibility to investigate non-equilibrium states of matter with striking properties, such as transient superconductivity and ferr…
Coordination chemistry in molecular symmetry adapted spin space (mSASS)
R. Matthias Geilhufe, Jeffrey D. Rinehart
Many areas of chemistry are devoted to the challenge of understanding, predicting, and controlling the behavior of strongly localized electrons. Examples include molecular magnetis…
Quantum buckling in metal-organic framework materials
R. Matthias Geilhufe
Metal organic frameworks are porous materials composed of metal ions or clusters coordinated by organic molecules. As a response to applied uniaxial pressure, molecules of straight…
Shifting computational boundaries for complex organic materials
R. Matthias Geilhufe, Bart Olsthoorn, Alexander V. Balatsky
Methodology adapted from data science sparked the field of materials informatics, and materials databases are at the heart of it. Applying artificial intelligence to these database…
Drive Quantum Matter
Gayanath W. Fernando, R. Matthias Geilhufe, Adil-Gerai Kussow +1
Single- and many-electron calculations and related dynamics are presented for a dimer and small Hubbard clusters. Floquet-Bloch picture for a periodic dimer is discussed with regar…
Dynamically induced magnetism in KTaO
R. Matthias Geilhufe, Vladimir Juričić, Stefano Bonetti +2
Dynamical multiferroicity features entangled dynamic orders: fluctuating electric dipoles induce magnetization. Hence, the material with paraelectric fluctuations can develop magne…
Identification of strongly interacting organic semimetals
R. Matthias Geilhufe, Bart Olsthoorn
Dirac- and Weyl point- and line-node semimetals are characterized by a zero band gap with simultaneously vanishing density of states. Given a sufficient interaction strength, such…
Dirac Materials for Sub-MeV Dark Matter Detection: New Targets and Improved Formalism
R. Matthias Geilhufe, Felix Kahlhoefer, Martin Wolfgang Winkler
Because of their tiny band gaps Dirac materials promise to improve the sensitivity for dark matter particles in the sub-MeV mass range by many orders of magnitude. Here we study se…
Spin wave excitations of magnetic metalorganic materials
Johan Hellsvik, Roberto Díaz Pérez, R. Matthias Geilhufe +2
The Organic Materials Database (OMDB) is an open database hosting about 22,000 electronic band structures, density of states and other properties for stable and previously synthesi…
Computational search for Dirac and Weyl nodes in -electon antiperovskites
Anna Pertsova, R. Matthias Geilhufe, Martin Bremholm +1
We present the result of an \textit{ab initio} search for new Dirac materials among inverse perovskites. Our investigation is focused on the less studied class of lanthanide antipe…
Band gap prediction for large organic crystal structures with machine learning
Bart Olsthoorn, R. Matthias Geilhufe, Stanislav S. Borysov +1
Machine-learning models are capable of capturing the structure-property relationship from a dataset of computationally demanding ab initio calculations. Over the past two years, th…
Chemical-Strain Induced Tilted Dirac Nodes in (BEDT-TTF)X (X = I, Cl, Br, F) Based Charge-Transfer Salts
R. Matthias Geilhufe, Benjamin Commeau, Gayanath W. Fernando
The identification of novel multifunctional Dirac materials has been an ongoing effort. In this connection quasi 2-dimensional (BEDT-TTF)-based charge transfer salts are widely dis…
Materials Informatics for Dark Matter Detection
R. Matthias Geilhufe, Bart Olsthoorn, Alfredo Ferella +4
Dark Matter particles are commonly assumed to be weakly interacting massive particles (WIMPs) with a mass in the GeV to TeV range. However, recent interest has shifted towards ligh…