Theory of the interfacial dzyaloshinskii moriya interaction in rashba antiferromagnets alireza qaiumzadeh,1 ivan a. Pollard,3 marco beleggia,4 tanmay dutta,3 hyunsoo yang,3 and yimei zhu1,2, 1condensed matter physics and materials science division, brookhaven national laboratory, upton, new york 11973, usa. May 27, 2015 we show that the recent experimental realization of spinorbit coupling in ultracold atomic gases can be used to study different types of spin spiral order and resulting multiferroic effects. Exchange bias driven by dzyaloshinskiimoriya interactions r.
Electric control of magnetism is a prerequisite for efficient and lowpower spintronic devices. The magnetic dzyaloshinskiimoriya interaction dmi arises in systems with bulk inversion asymmetry 1, 2. An upper limit to the size of the interaction is estimated from the canting angle. In these materials the combination of the exchange and spinorbit interactions between electrons leads to an effective interaction between magnetic moments s i of the form. Improvement of the interfacial dzyaloshinskiimoriya. Without bulk inversion asymmetry, the dmi arises at interfaces only and couples two magnetic sites both sitting within a surface layer 1, 3. The magnitude and sign of can be tuned in experiments using coherent destructive tunneling methods 31. With the perovskite multiferroic rmno3 r gd, tb, dy as guidance, we argue that the dzyaloshinskii moriya interaction dmi provides the microscopic mechanism for the coexistence and strong coupling between ferroelectricity and incommensurate magnetism. Effects of the dzyaloshinskiimoriya interaction in cr3. The dzyaloshinskiimoriya interaction is crucial for understanding magnetic domain wall motion in perpendicular magnetic anisotropy systems. A better understanding of the dzyaloshinskiimoriya interaction in this material should shed light. Condensed matter physics copyright 2020 threedimensional. Role of the dzyaloshinskiimoriya interaction in multiferroic perovskites i. Role of the dzyaloshinskiimoriya interaction in multiferroic.
Our study provides the experimental connection between the orbital physics and the spinorbitrelated phenomena, such as dmi. However, it is possible to specify inputs to use external preconverged charge density. Engineering dzyaloshinskiimoriya interaction in b20 thin. Threedimensional magnetism and the dzyaloshinskiimoriya. In magnetically ordered systems, it favors a spin canting of otherwise antiparallel aligned magnetic moments and thus. Interfacial dzyaloshinskii moriya interaction dmi is experimentally investigated in ptcopt multilayer films under strain. Dzyaloshinskiimoriya interaction dmi, which arises from the broken. Pdf the dzyaloshinskiimoriya dm interaction in metals is an important mechanism for many magnetic properties. We investigate the zerotemperature phase diagram of the nearestneighbor kagome antiferromagnet in the presence of dzyaloshinksiimoriya interaction. Pollard, 3 marco beleggia, 4 tanmay dutta, 3 hyunsoo yang, 3 and yimei zhu 1,2, 1 condensed matter physics and materials science division, brookhaven national laboratory, upton, new york 11973, usa.
The magnetic dzyaloshinskii moriya interaction dmi arises in systems with bulk inversion asymmetry 1, 2. Theory of the interfacial dzyaloshinskiimoriya interaction in rashba. Recently,basedonsymmetry properties, dzyaloshinskii moriya dm interactions have been proposed as possible mechanisms responsible to eb in compensated systems 9,10. The dzyaloshinskii moriya dm interaction is the most likely candidate for such an interaction. Introduction in a number of insulators, an external electric or magnetic. Dzyaloshinskiimoriya domain walls in magnetic nanotubes. Improvement of the interfacial dzyaloshinskiimoriya interaction by introducing a ta buffer layer namhui kim,1 dongsoo han,2 jinyong jung,1 jaehun cho,1 juneseo kim,2,a henk j. Largevoltage tuning of dzyaloshinskiimoriya interactions. Quantification of mixed blochneel topological spin textures. Allelectrical measurement of interfacial dzyaloshinskiimoriya. Iv international workshop dzyaloshinskiimoriya interaction.
Osrcrg urf1228501 from the office of sponsored research osr. Classically, such an interaction induces incommensurate spiral correlations in the plane perpendicular to the dm vector d ij. We have considered the 1d spin12 heisenberg model with added dzyaloshinskiimoriya interaction. Files available from the acs website may be downloaded for personal use only. Influence of the dzyaloshinskiimoriya interaction on the. Fuchs 1school of applied and engineering physics, cornell university, ithaca, new york 14853, usa 2department of materials science and engineering, cornell university. Hunds ruledriven dzyaloshinskiimoriya interaction at 3d. This workchain calculates dzyaloshinskiimoriya interaction energy over a given set of qpoints. Dzyaloshinskiimoriya interaction dmi, which arises from the broken inversion symmetry and spinorbit coupling, is of prime interest as it leads to a stabilization of chiral magnetic order and provides an efficient manipulation of magnetic nanostructures. Spin dynamics simulation shows that a critical magnetic field of 2. Ising order in a magnetized heisenberg chain subject to a uniform dzyaloshinskiimoriya interaction yanghao chan,1 wen jin, 2hongchen jiang,3 and oleg a. Effect of the dzyaloshinskii moriya interaction on the.
Electronic structure, magnetic anisotropy and dzyaloshinskii. A better understanding of the dzyaloshinskiimoriya interaction in this material should shed light on the multiferroicity of the related ni 3 v 2 o 8. Interfacial dzyaloshinskiimoriya interaction, surface. Dzyaloshinskiimoriya interaction in s 32 kagome staircase co 3v 2o 8 joel s. Competing ferroic orders the magnetoelectric effect basic training in condensed matter theory 2009. Insight into the dzyaloshinskiimoriya interaction through. Dzyaloshinskiimoriya interaction of course, this expansion in term of ls coupling does not mean that this term in the dominant one, but an least, this is the first one you can think about. Dzyaloshinskiimoriya interaction in absence of spinorbit coupling.
Dzyaloshinskiimoriya dm interaction is an antisymmetric, anisotropic exchange coupling between two spins magnetic moments on a lattice bond with no inversion center. Phonon modulated exchange interaction baltensperger and helman, helvetica physica acta 1968. Interfacial dzyaloshinskiimoriya interaction, surface anisotropy energy, and spin pumping at spin orbit coupled irco interface namhui kim,1 jinyong jung,1 jaehun cho,1 dongsoo han,2 yuxiang yin,2 juneseo kim,2,a henk j. Dzyaloshinskiimoriya interaction subjected to an external magnetic.
Dzyaloshinskii moriya interaction in copd multilayers joseph a. Influence of the dzyaloshinskiimoriya interaction on the fmr. Quantum criticality of the kagome antiferromagnet with. Dzyaloshinskiimoriya interaction and spiral order in spin. The hamiltonian hd s1xs2 contains the cross product s1xs2 which is a vector perpendicular to s1 and s2, times the dm vector d. Dzyaloshinskiimoriya dm interaction is the most likely candidate for such an interaction. Dzyaloshinskiimoriya interaction of course, this expansion in term of ls coupling does not mean that this term in the dominant one, but an least, this is the. More specifically, in heavy metalferromagnetinsulator heterostructures, voltage gating has been shown to locally and dynamically tune magnetic properties such as interface anisotropy and saturation magnetization. Antisymmetric exchange, also known as the dzyaloshinskiimoriya interaction dmi, is a contribution to the total magnetic exchange interaction between two neighboring magnetic spins, and. Dzyaloshinskiimoriya antisymmetric exchange l1 anisotropic. Fleur dzyaloshinskiimoriya interaction energy workchain. Interfacial dzyaloshinskiimoriya interaction, surface anisotropy. We have also made the raw data files and parameter files available at. We investigate the zerotemperature phase diagram of the nearestneighbor kagome antiferromagnet in the presence of dzyaloshinksii moriya interaction.
For materials design of skyrmion crystals, we need to know the precise value of dj. Manipulation of dzyaloshinskiimoriya interaction in copt. Swagten,2 and chunyeol you 1,3,b 1department of physics, inha university, incheon 22212, south korea 2department of applied physics, center for nanomaterials. Allelectrical measurement of interfacial dzyaloshinskii. Entanglement of onedimensional in ising model with added. Exchange bias driven by dzyaloshinskiimoriya interactions. By selecting a block of two or three spins, we have solved the hamiltonian. The effect of a uniform magnetic field on the ground state phase diagram of the model is studied. We show that the recent experimental realization of spinorbit coupling in ultracold atomic gases can be used to study different types of spin spiral order and resulting multiferroic effects. Controlling dzyaloshinskiimoriya interactions in the. Dagotto condensed matter sciences division, oak ridge national laboratory, oak ridge, tennessee 37831, usa and department of physics, the university of tennessee, knoxville, tennessee 37996, usa received 2 august 2005. May 26, 2017 we are glad to announce that the international workshop on dzyaloshinskiimoriya interaction and exotic spin structures dmi 2017 will take place in peterhof, russia on may 23 26, 2017.
Dzyaloshinskiimoriya interaction qingqiu wu,1 weihai ni,1 and wenlong you1. Tuning the dzyaloshinskiimoriya interaction in ptcomgo. Effects of the dzyaloshinskiimoriya interaction in cr 3 triangular spin clusters detected by specific heat and multifrequency electron spin resonance alberto ghirri, a johan van tol, b inigo vitoricayrezabal, c grigore a. Electronic structure and the origin of the dzyaloshinskii. In a heavy metal and ferromagnetic multilayer system with perpendicular magnetic anisotropy pma, the dmi results from spinorbit coupling at the interface. China we consider a class of onedimensional compass models with staggered dzyaloshinskiimoriya exchange interactions in an external transverse magnetic. Dzyaloshinskiimoriya interaction and the charge of skyrmions frank freimuth, 1, robert bamler,2 yuriy mokrousov, and achim rosch2 1peter grunberg institut and institute for advanced simulation, forschungszentrum j. The currentinduced domain wall motion along a thin cobalt ferromagnetic strip sandwiched in a multilayer ptcoalo is theoretically studied with emphasis on the roles of the rashba field, the spin hall effect, and the dzyaloshinskii moriya interaction. Fuchs 1 school of applied and engineering physics, cornell university, ithaca, new york 14853, usa. We are glad to announce that the international workshop on dzyaloshinskiimoriya interaction and exotic spin structures dmi 2017 will take place in peterhof, russia on may 23 26, 2017. Firstprinciples evaluation of the dzyaloshinskiimoriya. If you have a disability and are having trouble accessing information on this website or need materials in an alternate format, contact web. Publishers pdf, also known as version of record includes final page, issue and. The dzyaloshinskiimoriya interaction 46 dmi is a spinorbit coupling effect that arises in crystals with a broken inversion symmetry.
Swagten,2 and chunyeol you 1,3,b 1department of physics, inha university, incheon 22212, south korea. Pdf three experimental techniques sensitive to the sign of the dzyaloshinskii moriya interaction are discussed. Pdf the dzyaloshinskiimoriya interaction in metals researchgate. Influence of the dzyaloshinskiimoriya interaction on the fmr spectrum of magnonic crystals and confined structures. Moreover, spin wave branches show gaps that point to an unexpectedly large dzyaloshinskiimoriya interaction on the nearestneighbor bond, with d 1. Determination of the sign of the dzyaloshinskiimoriya interaction. With the perovskite multiferroic rmno3 r gd, tb, dy as guidance, we argue that the dzyaloshinskiimoriya interaction dmi provides the microscopic mechanism for the coexistence and strong coupling between ferroelectricity and incommensurate magnetism. Dzyaloshinskiimoriya interaction dmi has to be added 1,2. In this workchain the forcetheorem is employed which means the workchain converges a reference charge density first then it submits a single fleurcalculation with a tag. Lynn2 timeofflight neutron data reveal spin waves in the ferromagnetic ground state of the kagome staircase material co 3v 2o 8. The dzyaloshinskii moriya interaction between spin ith and jth expressed by.
The currentinduced domain wall motion along a thin cobalt ferromagnetic strip sandwiched in a multilayer ptcoalo is theoretically studied with emphasis on the roles of the rashba field, the spin hall effect, and the dzyaloshinskiimoriya interaction. Spinorbit coupling in optical lattices can give rise to the dzyaloshinskii moriya dm spin interaction which is essential for spin spiral order. Quantitatively, it is a term in the hamiltonian which can be written as. Here, we report allelectrical measurement of dmi using propagating spin wave spectroscopy based on the collective spin wave with a well. Control of dzyaloshinskiimoriya interaction in mn1. Even at the level of statics, dramatic effects arise from the interplay of space curvature and dmi.
This symmetry reduction can occur on the microscopic level in inversion asymmetric crystal. Quantification of mixed blochneel topological spin. The iv international workshop dmi 2017, hosted by b. The dzyaloshinskiimoriya dm interaction plays a key role in stabilizing the skyrmion state. Thus dmis are of major importance in the conversion of the inner structure.
University of groningen dzyaloshinskiimoriya interactions. Swagten,2 and chunyeol you 1,b 1department of physics, inha university, incheon 402751, south korea 2department of applied physics, center for nanomaterials, eindhoven university of technology, po box 5. Antisymmetric exchange, also known as the dzyaloshinskii moriya interaction, is a contribution to the total magnetic exchange interaction between two neighboring magnetic spins, and. Proposal for a micromagnetic standard problem for materials. The associated tunneling process and quantum interference effects of different tunneling paths have been observed recently in a mn 12based molecular wheel. Controlling dzyaloshinskii moriya interactions in the skyrmion host candidates fepd 1. Request pdf exchange bias driven by dzyaloshinskiimoriya interactions the exchange bias effect in compensated irmn3co111 system is studied using multiscale modeling from ab initio to. The dynamics of these chiral structures exhibits several interesting features. Three experimental techniques sensitive to the sign of the dzyaloshinskiimoriya interaction are discussed. However, its effect on interfacial dzyaloshinskiimoriya interaction dmi. Dzyaloshinskiimoriya interaction and the magnetic ground. Role of the dzyaloshinskii moriya interaction in multiferroic perovskites i. Nowak1 1department of physics, university of konstanz, konstanz, d78457, germany 2university of york, heslington, york, yo10 5dd, united kingdom 3department of theoretical physics and condensed matter research group of the hungarian academy of sciences, budapest.
Starykh 1institute of atomic and molecular sciences, academia sinica, taipei 10617, taiwan 2department of physics and astronomy, university of utah, salt lake city, utah 84112, usa 3stanford institute for materials and energy sciences. We have considered the 1d spin12 heisenberg model with added dzyaloshinskii moriya interaction. Attempts to quantify the dmi vector have utilized xray diffraction interference, brillouin scattering, electron spin resonance, and neutron. The dzyaloshinskiimoriya interaction has proven difficult to experimentally measure directly due to its typically weak effects and similarity to other magnetoelectric effects in bulk materials. It is induced by a relativistic spinorbit coupling and has the form. The first one evaluates the energy change due to the spin twisting by directly calculating the helical spin structure. Improvement of the interfacial dzyaloshinskii moriya interaction by introducing a ta buffer layer namhui kim,1 dongsoo han,2 jinyong jung,1 jaehun cho,1 juneseo kim,2,a henk j. Strong hopping induced dzyaloshinskiimoriya interaction and. Duine,1,3,4 mikhail titov,2,5 and arne brataas1 1center for quantum spintronics, department of physics, norwegian university of science and technology, no7491 trondheim, norway 2radboud university, institute for molecules and materials, 6525 aj nijmegen, netherlands.
Heisenberg model with added dzyaloshinskiimoria interaction. The dzyaloshinskii moriya interaction is crucial for understanding magnetic domain wall motion in perpendicular magnetic anisotropy systems. These results can boost the development of janus 2d materials, which are useful in the design of multifunctional spintronic devices. We have mapped the model to an effective model which is known as the 1d xxz in both uniform and staggered magnetic fields. What is the origin of the inverse dzyaloshinksii moriya. Konstantinov petersburg nuclear physics institute pnpi, follows three previous meetings held in. Determination of the sign of the dzyaloshinskiimoriya.