11 citations · 35 across the 9 of their papers we have counts for
9 papers
Classifying magnons in itinerant ferromagnets from linear response TDDFT: Fe, Ni and Co revisited
Thorbjørn Skovhus, Thomas Olsen
The magnetic excitation spectrum of itinerant magnets exhibits rich and complex spectral features that often complicate interpretation of the underlying physics. For perturbations…
Odd-parity Magnetism from the Generalized Bloch Theorem
Mikkel Christian Larsen, Thomas Olsen
In the non-relativistic limit, helimagnetic order is always associated with odd-parity magnetism. That is, for single-particle states the expectation value of the electronic spin i…
Critical temperatures of two dimensional magnets beyond linear spin wave theory: application to CrI, MPS (M=Ni, Mn, Fe) and CrSBr
Varun Rajeev Pavizhakumari, Thomas Olsen
Magnetic anisotropy is crucial for sustaining long range magnetic order in two-dimensional materials (2D) and must be taken into account by any approximate scheme for calculating c…
Implementation of the magnetic force theorem for large-scale calculations of magnon bands: application to yttrium iron garnet
Thorbjørn Skovhus, Varun Rajeev Pavizhakumari, Thomas Olsen
We present an efficient implementation of the magnetic force theorem which allows for direct evaluation of exchange parameters in q-space. The exchange parameters are calculated di…
Predicting the Néel temperatures in general helimagnetic materials: a comparison between mean field theory, random phase approximation, renormalized spin wave theory and classical Monte Carlo simulations
Varun Rajeev Pavizhakumari, Thomas Olsen
The critical temperature for magnetic order comprises a crucial property of any magnetic material and ranges from a few Kelvin in certain antiferromagnets to 1400 K in ferromagneti…
Bilayer orthogonal ferromagnetism in CrTe-based van der Waals system
Chiara Bigi, Cyriack Jego, Vincent Polewczyk +19
Systems with pronounced spin anisotropy play a pivotal role in advancing magnetization switching and spin-wave generation mechanisms, which are fundamental for spintronic technolog…
Magnetoelectric behavior of breathing kagomé monolayers of from first-principles calculations
John Mangeri, Varun R. Pavizhakumari, Thomas Olsen
We apply density functional theory to explore the magnetoelectric (ME) properties of two-dimensional . These compounds have recently been propose…
Beyond the random phase approximation for calculating Curie temperatures in ferromagnets: application to Fe, Ni, Co and monolayer CrI3
Varun Rajeev Pavizhakumari, Thorbjørn Skovhus, Thomas Olsen
The magnetic properties of solids are typically analyzed in terms of Heisenberg models where the electronic structure is approximated by interacting localized spins. However, even…
Minority magnons and mode branching in monolayer FeGeTe
Thorbjørn Skovhus, Thomas Olsen
We predict the presence of minority magnons in monolayer FeGeTe using first principles calculations. Minority magnons constitute a new type of collective magnetic excitatio…