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19922026
Showing 2021 · cond-mat.mtrl-sciShow all

32 papers · 2 filters

cond-mat.mtrl-sci2021★ 1 cited

Control of site occupancy by variation of the Zn and Al content in NiZnAl ferrite epitaxial films with low magnetic damping

Julia Lumetzberger, Verena Ney, Anna Zhakarova +3

The structural and magnetic properties of Zn/Al doped nickel ferrite thin films can be adjusted by changing the Zn and Al content. The films are epitaxially grown by reactive magne…

cond-mat.mtrl-sci2021★ 12 cited

Element selective ultrafast magnetization dynamics of hybrid Stoner-Heisenberg magnets

Mohamed F. Elhanoty, Olle Eriksson, Ronny Knut +2

Stoner and Heisenberg excitations in magnetic materials are inherently different. The former involves an effective reduction of the exchange splitting, whereas the latter comprises…

cond-mat.mtrl-sci2021★ 42 cited

Spin-lattice couplings in two-dimensional CrI from first-principles study

Banasree Sadhukhan, Anders Bergman, Yaroslav O. Kvashnin +2

Since thermal fluctuations become more important as dimensions shrink, it is expected that low-dimensional magnets are more sensitive to lattice distortions and phonons than bulk s…

cond-mat.mtrl-sci2021

Non-equilibrium self-assembly of spin-wave solitons in FePt nanoparticles

D. Turenne, A. Yaroslavtsev, X. Wang +36

Magnetic nanoparticles such as FePt in the L10-phase are the bedrock of our current data storage technology. As the grains become smaller to keep up with technological demands, the…

cond-mat.mtrl-sci2021★ 13 cited

State-resolved ultrafast charge and spin dynamics in [Co/Pd] multilayers

Loïc Le Guyader, Daniel J. Higley, Matteo Pancaldi +17

We use transient absorption spectroscopy with circularly polarized x-rays to detect laser-excited hole states below the Fermi level and compare their dynamics with that of unoccupi…

cond-mat.mtrl-sci2021★ 33 cited

A-site Cation Influence on the Conduction Band of Lead Bromide Perovskites

Gabriel J. Man, Chinnathambi Kamal, Aleksandr Kalinko +7

Hot carrier solar cells hold promise for exceeding the Shockley-Queisser limit. Slow hot carrier cooling is one of the most intriguing properties of lead halide perovskites and dis…

cond-mat.mtrl-sci2021★ 13 cited

Thermally-induced magnetic order from glassiness in elemental neodymium

Benjamin Verlhac, Lorena Niggli, Anders Bergman +8

Temperature in thermodynamics is synonymous with disorder, and responsible for ultimately destroying ordered phases. Here, we show an unusual magnetic transition where, with increa…

cond-mat.mtrl-sci2021★ 9 cited

Pseudoelasticity of SrNiP micropillar via Double Lattice Collapse and Expansion

Shuyang Xiao, Vladislav Borisov, Guilherme Gorgen-Lesseux +7

The maximum recoverable strain of most crystalline solids is less than 1% because plastic deformation or fracture usually occurs at a small strain. In this work, we show that a SrN…

cond-mat.mtrl-sci2021

Electrochromism of Ni-deficient nickel oxide -- Theoretical justification

Igor A. Pašti, Ana S. Dobrota, Dmitri Migas +2

The development of new electrochromic materials and devices, like smart windows, has an enormous impact on the energy efficiency of modern society. One of the crucial materials in…

cond-mat.mtrl-sci2021★ 25 cited

Exchange scaling of ultrafast angular momentum transfer in 4 antiferromagnets

Y. W. Windsor, S-E. Lee, D. Zahn +11

Ultrafast manipulation of the magnetic state of matter bears great potential for future information technologies. While demagnetisation in ferromagnets is governed by dissipation o…

cond-mat.mtrl-sci2021★ 14 cited

Effect of small cation occupancy and anomalous Griffiths phase disorder in nonstoichiometric magnetic perovskites

Sagar Ghorai, Vitalii Shtender, Petter Ström +2

The structural, magnetic, magnetocaloric and Griffiths phase (GP) disorder of non-stoichiometric perovskite manganites La_(0.8-x) Sr_(0.2-y) Mn_(1+x+y) O_3 are reported here. Deter…

cond-mat.mtrl-sci2021★ 9 cited

Thermal squeezing and nonlinear spectral shift of magnons in antiferromagnetic insulators

Mahroo Shiranzaei, Roberto E. Troncoso, Jonas Fransson +2

We investigate the effect of magnon-magnon interactions on the dispersion and polarization of magnons in collinear antiferromagnetic (AF) insulators at finite temperatures. In two-…

cond-mat.mtrl-sci2021★ 32 cited

Ferromagnetism with in-plane magnetization, Dirac spin-gapless semiconducting property, and tunable topological states in two-dimensional rare-earth-metal dinitrides

Yawei Yu, Xin Chen, Xiaobiao Liu +5

As the bulk single-crystal MoN2/ReN2 with a layered structure was successfully synthesized in experiment, transition-metal dinitrides have attracted considerable attention in recen…

cond-mat.mtrl-sci2021★ 18 cited

Influence of inter-sublattice coupling on the terahertz nutation spin dynamics in antiferromagnets

Ritwik Mondal, Peter M. Oppeneer

Spin nutation resonance has been well-explored in one-sublattice ferromagnets. Here, we investigate the spin nutation in two-sublattice antiferromagnets as well as, for comparison,…

cond-mat.mtrl-sci2021★ 18 cited

Experimental confirmation of the delayed Ni demagnetization in FeNi alloy

Somnath Jana, Ronny Knut, Shreyas Muralidhar +6

Element-selective techniques are central for the understanding of ultrafast spin dynamics in multi-element materials like magnetic alloys. Recently, though, it turned out that the…

cond-mat.mtrl-sci2021★ 20 cited

Ab initio study of electromagnatic modes in two-dimensional semiconductors: Application to doped phosphorene

Dino Novko, Keenan Lyon, Duncan J. Mowbray +1

Starting from the rigorous quantum-field-theory formalism we derive a formula for the screened conductivity designed to study the coupling of light with elementary electron excitat…

cond-mat.mtrl-sci2021★ 16 cited

Analyser-free, intensity-based wide-field magneto-optical microscopy

R. Schäfer, Peter M. Oppeneer, Alexey Ognev +2

In conventional Kerr- and Faraday microscopy the sample is illuminated with plane-polarised light and a magnetic domain contrast is generated by an analyser making use of the Kerr-…

cond-mat.mtrl-sci2021★ 18 cited

Magnon diffuse scattering in scanning transmission electron microscopy

Keenan Lyon, Anders Bergman, Paul Zeiger +4

We present a theory and a simulation of thermal diffuse scattering due to the excitation of magnons in scanning transmission electron microscopy. The calculations indicate that mag…

cond-mat.mtrl-sci2021★ 41 cited

Enhanced metal-insulator transition in freestanding VO2 down to 5 nm thickness

Kun Han, Liang Wu, Yu Cao +9

Ultrathin freestanding membranes with a pronounced metal-insulator transition (MIT) provides huge potential in future flexible electronic applications as well as a unique aspect of…

cond-mat.mtrl-sci2021★ 11 cited

Simulations of angle- and spatially-resolved vibrational electron energy loss spectroscopy for a system with a planar defect

Paul M. Zeiger, Ján Rusz

Recent developments in experiments with vibrational electron energy loss spectroscopy (EELS) have revealed spectral shape variations at spatial resolutions down to sub-atomic scale…

cond-mat.mtrl-sci2021★ 82 cited

Room temperature two-dimensional antiferromagnetic Weyl semimetal CrO with giant spin-splitting and spin-momentum locked transport

Xin Chen, Duo Wang, Linyang Li +1

Giant spin-splitting was recently predicted in collinear antiferromagnetic materials with a specific class of magnetic space group. In this work, we have predicted a two-dimensiona…

cond-mat.mtrl-sci2021★ 26 cited

The frequency-resolved frozen phonon multislice method and its application to vibrational EELS using parallel illumination

Paul M. Zeiger, Ján Rusz

We explore the capabilities of the frequency-resolved frozen phonon multislice method introduced in Phys. Rev. Lett. 124, 025501 (2020) to model inelastic vibrational scattering in…

cond-mat.mtrl-sci2021★ 32 cited

Ultrafast coherent all-optical switching of an antiferromagnet with the inverse Faraday effect

Tobias Dannegger, Marco Berritta, Karel Carva +4

We explore the possibility of ultrafast, coherent all-optical magnetization switching in antiferromagnets by studying the action of the inverse Faraday effect in CrPt, an easy-plan…

cond-mat.mtrl-sci2021★ 25 cited

Band-Order Anomaly at the γ-Al2O3/SrTiO3 Interface Drives the Electron-Mobility Boost

Alla Chikina, Dennis V. Christensen, Vladislav Borisov +10

Rich functionalities of transition-metal oxides and their interfaces bear an enormous technological potential. Its realization in practical devices requires, however, a significant…