Pdf effect of dzyaloshinskii moriya interaction on magnetic. 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. Stamps1 1supa, school of physics and astronomy, university of glasgow, glasgow g12 8qq, uk. Dzyaloshinskiimoriya interaction and spiral order in spin.
View the article pdf and any associated supplements and figures for a period of 48 hours. Interfacial dzyaloshinskii moriya interaction dmi is experimentally investigated in ptcopt multilayer films under strain. Three experimental techniques sensitive to the sign of the dzyaloshinskii moriya interaction are discussed. Competing ferroic orders the magnetoelectric effect basic training in condensed matter theory 2009 craig j. The effect of a uniform magnetic field on the ground state phase diagram of the model is studied. Spin wave eigenmodes of dzyaloshinskii domain walls. In magnetic multilayer systems, a large spinorbit coupling at the interface between.
Pdf effect of dzyaloshinskii moriya interaction on. Using extensive dmrg simulations, we show that the dm contribution to the torque is peaked at the critical fields, and that the total torque is nonmonotonous. N2 magnetic domain wall motion is numerically studied in a nanowire with a dzyaloshinskiimoriya interaction dmi step at which dmi varies in real space. Antisymmetric exchange, also known as the dzyaloshinskiimoriya interaction dmi, is a contribution to the total magnetic exchange interaction between two neighboring magnetic spins, and. Since in solids the properties are governed by collective phenomena, the investigation of the magnon spectrum would provide an access to the basic and core properties of a magnetic solid. A new family of matrix product states with dzyaloshinski. The dzyaloshinskiimoriya interaction and magnetic skyrmions. Hunds ruledriven dzyaloshinskiimoriya interaction at 3d5d interfaces a. Determination of the sign of the dzyaloshinskiimoriya interaction. Modifications on the skyrmion lattice by magnetic dipole interaction are investigated. We have examined a possibility to detect the dm interaction as well as the nonsecular part of the dipolar interaction for. What is the origin of the inverse dzyaloshinksii moriya interaction. Recently, the domain walls of stripe domain in feni bilayer system are found to have neeltype domain wall with a definite chirality.
Theory of magnetism international max planck research school for dynamical processes in atoms, molecules and solids carsten timm technische universit at dresden, institute for theoretical physics. Determination of the orientation of the dzyaloshinskiimoriya vector from the local geometry. Attempts to quantify the dmi vector have utilized xray diffraction interference, brillouin scattering, electron spin resonance, and neutron. Download scientific diagram dzyaloshinskiimoriya interactions. Xiang1 1 key laboratory of computational physical sciences ministry of education, state key. We have considered the 1d spin12 heisenberg model with added dzyaloshinskiimoriya interaction. Dzyaloshinskiimoriya interaction subjected to an external magnetic.
What is the origin of the inverse dzyaloshinksii moriya. Dzyaloshinskiimoriya interaction in absence of spinorbit coupling. Anatomy of dzyaloshinskiimoriya interaction at co pt. Phase map of the skyrmion lattice structure is obtained by montecarlo simulated annealing. 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.
Introduction in a magnetically ordered solid the collective magnetic excitations are called magnons. Dzyaloshinskii moriya dm interaction in the paramagnetic state leads to the incommensurate spin fluctuations with incommensurate vector proportional to the. T1 magnetic domain wall motion across a step of dzyaloshinskii moriya interaction. Dzyaloshinskiimoriya interaction in the paramagnetic. Download fulltext pdf download fulltext pdf download fulltext pdf effect of dzyaloshinskii moriya interaction on magnetic vortex article pdf available in aip advances 44 january 2014. The dzyaloshinskiimoriya interaction dmi is an antisymmetric exchange interaction that plays a decisive role in the formation of chiral magnetic structures and in the determination of magnetoelectric properties. We define a new family of matrix product states which are exact ground states of spin 12 hamiltonians on one dimensional lattices. It is induced by a relativistic spinorbit coupling and has the form. We have considered the 1d spin12 heisenberg model with added dzyaloshinskii moriya 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 first one you can think about. For this goal two regions were defined as top and bottom layers. This class of hamiltonians contain both heisenberg and dzyaloshinskiimoriya interactions but at specified and not arbitrary couplings. Iii international workshop dzyaloshinskiimoriya interaction and exotic spin structures. 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. Electronic structure and the origin of the dzyaloshinskii moriya interaction in mnsi k. Topological defects in magnetism have attracted great attention due to fundamental research interests and potential novel spintronics applications. Magnetic domain wall motion across a step of dzyaloshinskii. Spin wave eigenmodes of dzyaloshinskii domain walls pablo borys,1 felipe garciasanchez, 2,3joovon kim. In magnetically ordered systems, it favors a spin canting of otherwise antiparallel aligned magnetic moments and thus. Pdf dzyaloshinskiimoriya interaction in magnetoferroelectric.
Dzyaloshinskii moriya interaction rather than the usual exchange interaction. Shanavas department of physics, university of missouri, columbia, mo 65211, usa and materials science and technology division, oak ridge national laboratory, oak ridge, tennessee 378316056, usa s. The dzyaloshinski moriya interaction partially lifts the magnetic frustration of the spin12 oxide srcu2bo32. This coupling originates from the combination of low structural symmetry and large spinorbit coupling. Electronic structure and the origin of the dzyaloshinskiimoriya interaction in mnsi k.
Antisymmetric exchange, also known as the dzyaloshinskiimoriya interaction dmi, is a. The international journal of indian psychology, volume 3. We study in this paper effects of dzyaloshinskiimoriya dm magnetoelectric coupling between ferroelectric. Stanislas rohart, joao sampaio, jacques miltat, ales hrabec ultrasky. Dzyaloshinskymoriya interactions induced by symmetry breaking. Spinorbit coupling in optical lattices can give rise to the dzyaloshinskiimoriya. We have mapped the model to an effective model which is known as the 1d xxz in both uniform and staggered magnetic fields.
He was with the university of western australia until 2010, and is currently professor of solid state physics at the university of glasgow in scotland. Detecting the dzyaloshinskiimoriya interaction by means. Conflict the big fight the settings of this story is. Spinhall nanooscillator with oblique magnetization and. This study investigated the impact of an external voltage on the magnetostatic surface waves in a aufemgo multilayer. Initially, dws in permalloy nanowires were widely studied 38, but materials with outofplane oop anisotropy promised even higher interactions between the current and dws 9,10. Electronic structure and the origin of the dzyaloshinskii. Download free acrobat reader dc software, the only pdf viewer that lets you read, search, print, and interact with virtually any type of pdf file. Quantitatively, it is a term in the hamiltonian which can be written as. Dynamical dzyaloshinskymoriya interaction in kcuf 3. Recently, skyrmions stabilized by the dzyaloshinskii moriya interaction have been studied.
Spinorbit coupling in optical lattices can give rise to the dzyaloshinskii moriya dm spin interaction which is essential for spin spiral order. It explains the fine structure of the excited triplet state and its unusual. What is the abbreviation for dzyaloshinskii moriya. We consider the tripartite hybrid system as a pair of non interacting two qutrits initially prepared in bound entangled states and one auxiliary qubit. Jan 25, 2016 in the present paper, we investigate the efficacy of dzyaloshinskiimoriya dm interaction to convert the bound entangled states into free entangled states. Highlights magnetic skyrmion lattice structure is formed by dzyaloshinskiimoriya interaction. Starykh1 1department of physics and astronomy, university of utah, salt lake city, utah 84112, usa motivated by recent experiments on spin chain materials k. Xiang1 1 key laboratory of computational physical sciences ministry of education, state key laboratory of surface physics, and department of physics, fudan university, shanghai 200433. We have studied occurrence of quantum phase transition in the onedimensional spin12 ising model with added dzyaloshinskiimoriya dm interaction from a bipartite and multipartite entanglement point of view. We investigate the effect of dzyaloshinskiimoriya dm interactions on torque measurements of quantum magnets with magnetization plateaux in the context of a frustrated spin12 ladder.
Pressuretemperature phase diagram of multiferroic ni3v2o8 pdf. Properties of skyrmion lattice under uniaxial anisotropy are investigated. Phase diagram of weakly coupled heisenberg spin chains subject to a uniform dzyaloshinskiimoriya interaction wen jin and oleg a. We study the spin orbit torque sot and dzyaloshinskii moriya interaction dmi in the dualinterfaced coni perpendicular multilayers. Determination of the sign of the dzyaloshinskiimoriya.
Strong dzyaloshinskiimoriya interaction and origin of. Using exact numerical solutions, we are able to study such systems up to 24 qubits. Orbit torque and tunable dzyaloshinskii moriya interaction generated by low. Users may download and print one copy of any publication from the public portal. T1 asymmetric magnetic domainwall motion by the dzyaloshinskii moriya interaction. We investigate the effect of dzyaloshinskii moriya dm interactions on torque measurements of quantum magnets with magnetization plateaux in the context of a frustrated spin12 ladder. Direct observation of the dzyaloshinskiimoriya interaction. Voltage induction of interfacial dzyaloshinskiimoriya. Antisymmetric exchange, also known as the dzyaloshinskii moriya interaction dmi, is a. Then magnetic parameters were set for this two regions. Dzyaloshinskiimoriya interaction as an agent to free the. Iii international workshop dzyaloshinskiimoriya interaction. The dzyaloshinskiimoriya interaction dmi 1,2 has recently returned to prominence due to recent.
Pdf dynamical dzyaloshinskymoriya interaction in kcuf 3. Jan 30, 2015 the interfacial dzyaloshinskii moriya interaction in an inplane anisotropic pt4 nmco1. The dzyaloshinskiimoriya dm interaction is induced by the spinorbit interaction with an antisymmetric component in the exchange coupling. Spin orbit torques and dzyaloshinskiimoriya interaction in dual. For the bls measurements, a tandem interferometer with a free spectral range fsr of. We show that antisymmetric exchange interactions dgh. Abstract the dzyaloshinskii moriya interaction dmi has been recently recognized to play a crucial role in allowing fast domain wall dynamics driven by spinorbit torques and the generation of magnetic skyrmions. Ab initio investigation of the dzyaloshinskiimoriya interaction in. Describing dzyaloshinskiimoriya spirals from first. Hug1,2 1 empa, swiss federal laboratories for materials science and technology, ch. We are proud to announce that the international workshop on dzyaloshinskiimoriya interaction and exotic spin structures dmi 2015 will take place in pskov, russia on june 26 30, 2015. Entanglement study of the 1d ising model with added. Manchon1, 1king abdullah university of science and technology kaust, physical science. Unlimited viewing of the articlechapter pdf and any associated.
China we consider a class of onedimensional compass models with staggered dzyaloshinskiimoriya exchange interactions in an external transverse magnetic. Manipulation of dzyaloshinskiimoriya interaction in copt. Effects of dzyaloshinskiimoriya interaction on magnetic. T1 magnetic domain wall motion across a step of dzyaloshinskiimoriya interaction. Spin wave eigenmodes of dzyaloshinskii domain walls pablo borys,1 felipe garciasanchez, 2,3joovon kim, and robert l. Pdf dzyaloshinskimoriya interaction in the 2d spin gap. We also compute in closed forms the one and twopoint functions and the explicit form of the ground state.
Measuring and tailoring the dzyaloshinskiimoriya interaction. In the present paper, we investigate the efficacy of dzyaloshinskiimoriya dm interaction to convert the bound entangled states into free entangled states. Abstract the dzyaloshinskiimoriya interaction dmi has been recently recognized to play a crucial role in allowing fast domain wall dynamics driven by spinorbit torques and the generation of magnetic skyrmions. Hund s ruledriven dzyaloshinskiimoriya interaction at 3 5. Dzyaloshinskiimoriya interaction dmi69, as it favors magnetization rotations with a. Rich examples of topological defects can be found in nanoscale nonuniform spin textures, such as monopoles, domain walls, vortices, and skyrmions. Apr 15, 2016 ive trying to define the bilayer film with different dmi in each layer. Anatomy of dzyaloshinskiimoriya interaction at co pt interfaces.
It is manifested as the asymmetry of the measured magnon dispersion relation, from which the dzyaloshinskii moriya interaction constant has been evaluated. Heisenberg model with added dzyaloshinskiimoria interaction. In contrast to conventional assumptions, we show that the dzyaloshinskiimoriya interaction can be of nonrelativistic origin. Spin orbit torques and dzyaloshinskiimoriya interaction. Multishell contribution to the dzyaloshinskiimoriya. N2 magnetic domain wall motion is numerically studied in a nanowire with a dzyaloshinskii moriya interaction dmi step at which dmi varies in real space. The effect of the dzyaloshinskii moriya interaction on the vortex in magnetic microdisk was investigated by micro magnetic simulation based on the landau lifshitz gilbert equation.
Here, we unveil the main features and microscopic mechanisms of dmi in co pt bilayers via first principles calculations. Magnetic skyrmion lattice structure is formed by dzyaloshinskiimoriya interaction. How does it affect the direction of polarization in magnetoelectrics. By selecting a block of two or three spins, we have solved the hamiltonian. Effect of anisotropy and dipole interaction on longrange. Dzyaloshinskii moriya dm interaction is an antisymmetric, anisotropic exchange coupling between two spins magnetic moments on a lattice bond with no inversion center. Three experimental techniques sensitive to the sign of the dzyaloshinskiimoriya interaction are discussed.
This thesis investigates this type of interaction for the first time for these onedimensional magnetic systems. Computing the dzyaloshinskiimoriya interaction for small and large spinorbit couplings. Thickness dependence of the interfacial dzyaloshinskiimoriya. Dzyaloshinskii moriya 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. Spin torque and nernst effects in dzyaloshinskiimoriya. To illustrate and assess the importance of such effects, we apply the linear response theory to the magnonmediated spin nernst and torque responses in a kagome lattice ferromagnet. Strong dzyaloshinskii moriya interaction and origin of ferroelectricity in cu 2 oseo 3 j. The transition from the microscopic heisenberg model to the macroscopic elastic theory is carried out for the chiral magnetics of mnsitype with the b20. Iv international workshop dzyaloshinskiimoriya interaction. Asymmetric magnetic domainwall motion by the dzyaloshinskii. Dzyaloshinskiimoriya interaction qingqiu wu,1 weihai ni,1 and wenlong you1. If the qvector is a fraction ofthe size of the submatrices named a i and b i in fig. Dec 22, 2011 we have studied occurrence of quantum phase transition in the onedimensional spin12 ising model with added dzyaloshinskiimoriya dm interaction from a bipartite and multipartite entanglement point of view.
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