81 citations · 412 across the 24 of their papers we have counts for
24 papers
Beating micromagnetic limits on skyrmion stability by long-range frustration
Shiwei Zhu, Moritz A. Goerzen, Changsheng Song +1
Skyrmion stability is commonly assumed to scale with skyrmion size or exchange stiffness within micromagnetic models. Here, we demonstrate that long-range exchange frustration can…
Extended saddle points govern long-lived antiskyrmions
Megha Arya, Moritz A. Goerzen, Lionel Calmels +4
Achieving long-lived nanoscale magnetic solitons remains a central challenge, as their lifetimes typically decrease rapidly with temperature. Here, we demonstrate that anisotropic…
Strongly enhanced lifetime of higher-order bimerons and antibimerons
Shiwei Zhu, Moritz A. Goerzen, Changsheng Song +2
Magnetic bimerons, similar to skyrmions, are topologically nontrivial spin textures characterized by topological charge . Most studies so far have focused on low- solitons ($…
A new skyrmion topological transition driven by higher-order exchange interactions in Janus MnSeTe
Megha Arya, Moritz A. Goerzen, Lionel Calmels +4
Two-dimensional (2D) van der Waals magnets offer a promising platform for pushing skyrmion technology to the single-layer limit with high tunability. While Dzyaloshinskii-Moriya in…
Lifetime of bimerons and antibimerons in two-dimensional magnets
Moritz A. Goerzen, Tim Drevelow, Soumyajyoti Haldar +3
Soliton-based computing architectures have recently emerged as a promising avenue to overcome fundamental limitations of conventional information technologies, the von Neumann bott…
Long lifetimes of nanoscale skyrmions in lithium-decorated van der Waals ferromagnet FeGeTe
Soumyajyoti Haldar, Moritz A. Goerzen, Stefan Heinze +1
The Dzyaloshinskii-Moriya interaction (DMI), which originates from spin-orbit coupling and relies on broken inversion symmetry, is recognized as a key ingredient in forming magneti…
Emergence of multiple topological spin textures in an all-magnetic van der Waals heterostructure
Moritz A. Goerzen, Tim Drevelow, Hendrik Schrautzer +3
Magnetic solitons such as skyrmions and bimerons show great promise for both fundamental research and spintronic applications. Stabilizing and controlling topological spin textures…
Prediction of stable nanoscale skyrmions in monolayer FeGeTe
Dongzhe Li, Soumyajyoti Haldar, Leo Kollwitz +3
Using first-principles calculations and atomistic spin simulations, we predict stable isolated skyrmions with a diameter below 10 nm in a monolayer of the two-dimensional van der W…
Proposal for all-electrical skyrmion detection in van der Waals tunnel junctions
Dongzhe Li, Soumyajyoti Haldar, Stefan Heinze
A major challenge for magnetic skyrmions in atomically thin van der Waals (vdW) materials is reliable skyrmion detection. Here, based on rigorous first-principles calculations, we…
Tuning the magnetic interactions in van der Waals FeGeTe heterostructures: A comparative study of \textit{ab initio} methods
Dongzhe Li, Soumyajyoti Haldar, Tim Drevelow +1
We investigate the impact of mechanical strain, stacking order, and external electric fields on the magnetic interactions of a two-dimensional (2D) van der Waals (vdW) heterostruct…
Strain-Driven Zero-Field Near-10 nm Skyrmions in Two-Dimensional van der Waals Heterostructures
Dongzhe Li, Soumyajyoti Haldar, Stefan Heinze
Magnetic skyrmions localized chiral spin structures show great promise for spintronic applications. The recent discovery of two-dimensional (2D) magnetic materials opened n…
Proposal for all-electrical spin manipulation and detection for a single molecule on boron-substituted graphene
Fei Gao, Dongzhe Li, Cyrille Barreteau +1
All-electrical writing and reading of spin states attract considerable attention for their promising applications in energy-efficient spintronics devices. Here we show, based on ri…
Negative Differential Resistance in Spin-Crossover Molecular Devices
Dongzhe Li, Yongfeng Tong, Kaushik Bairagi +10
We demonstrate, based on low-temperature scanning tunneling microscopy (STM) and spectroscopy, a pronounced negative differential resistance (NDR) in spin-crossover (SCO) molecular…
Current shot noise in atomic contacts: Fe and FeH between Au electrodes
Michael Mohr, Alexander Weismann, Dongzhe Li +2
Single Fe atoms on Au(111) surfaces were hydrogenated and dehydrogenated with the Au tip of a low-temperature scanning tunneling microscope (STM). Fe and FeH were contacted wit…
Surface states and related quantum interference in \textit{ab initio} electron transport
Dongzhe Li, Jonas L. Bertelsen, Nick Papior +2
Shockley surface states (SS) have attracted much attention due to their role in various physical phenomena occurring at surfaces. It is also clear from experiments that they can pl…
Giant anisotropic magnetoresistance through a tilted molecular -orbital
Dongzhe Li, Fabian Pauly, Alexander Smogunov
Anisotropic magnetoresistance (AMR), originating from spin-orbit coupling (SOC), is the sensitivity of the electrical resistance in magnetic systems to the direction of spin magnet…
Symmetry aspects of spin-filtering in molecular junctions: hybridization and quantum interference effects
Dongzhe Li, Rajdeep Banerjee, Sourav Mondal +4
Control and manipulation of electric current and, especially, its degree of spin polarization (spin filtering) across single molecules are currently of great interest in the field…
Perfect spin filtering by symmetry in molecular junctions
Dongzhe Li, Yannick J. Dappe, Alexander Smogunov
Obtaining highly spin-polarized currents in molecular junctions is crucial and desirable for nanoscale spintronics devices. Motivated by our recent symmetry-based theoretical argum…
Tuning spin filtering by anchoring groups in benzene derivative molecular junctions
Dongzhe Li, Yannick J. Dappe, Alexander Smogunov
One of the important issues of molecular spintronics is the control and manipulation of charge transport and, in particular, its spin polarization through single-molecule junctions…
Highly conductive and complete spin filtering of nickel atomic contacts in a nitrogen atmosphere
Dongzhe Li
Generating efficient and highly spin-polarized currents through nanoscale junctions is essential in the field of nanoelectronics and spintronics. In this paper, using …
Magnetocrystalline anisotropy of Fe and Co slabs and clusters on SrTiO by first-principles
Alexander Smogunov, Cyrille Barreteau, Dongzhe Li
In this work, we present a detailed theoretical investigation of the electronic and magnetic properties of ferromagnetic slabs and clusters deposited on SrTiO via first-princi…
Symmetry-selected spin-split hybrid states in C/ferromagnetic interfaces
Dongzhe Li, Cyrille Barreteau, Seiji Leo Kawahara +6
The understanding of orbital hybridization and spin-polarization at the organic-ferromagnetic interface is essential in the search for efficient hybrid spintronic devices. Here, us…
Out- versus in-plane magnetic anisotropy of free Fe and Co nanocrystals: tight-binding and first-principles studies
Dongzhe Li, Cyrille Barreteau, Martin R. Castell +2
We report tight-binding (TB) and Density Function Theory (DFT) calculations of magnetocrystalline anisotropy energy (MAE) of free Fe (body centerd cubic) and Co (face centered cubi…
Magnetocrystalline anisotropy energy of Fe, Fe slabs and nanoclusters: a detailed local analysis within a tight-binding model
Dongzhe Li, Alexander Smogunov, Cyrille Barreteau +2
We report tight-binding (TB) calculations of magnetocrystalline anisotropy energy (MAE) of Iron slabs and nanoclusters with a particuler focus on local analysis. After clarifying v…