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Magnetic structures and the relationship between spin and charge-orbital orderings of an A-site ordered double-perovskite manganite SmBaMn2O6, an anticipated multiferroic material, were investigated by means of neutron diffraction. The spin…

Strongly Correlated Electrons · Physics 2021-07-14 Ryoji Kiyanagi , Shigeki Yamada , Hiroshi Aoki , Hajime Sagayama , Taketo Moyoshi , Akiko Nakao , Takahisa Arima

We report the persistence of magnetic domains lying in moir\'e patterns with square and hexagonal symmetries. Our investigation is based on the dynamical description of two magnetic domains represented by a two species bosonic mixture of…

Quantum Gases · Physics 2022-05-02 Christian Madroñero , Rosario Paredes

Frustration in magnetic systems is fertile ground for complex behaviour, including unconventional ground states with emergent symmetries, topological properties, and exotic excitations. A canonical example is the emergence of…

Strongly Correlated Electrons · Physics 2022-03-02 M. J. Pearce , K. Götze , A. Szabó , T. S. Sikkenk , M. R. Lees , A. T. Boothroyd , D. Prabhakaran , C. Castelnovo , P. A. Goddard

Domain walls (DWs) in ferroic materials, across which the order parameter abruptly changes its orientation, can host emergent properties that are absent in the bulk domains. Using a broadband ($10^6-10^{10}$ Hz) scanning impedance…

Mesoscale and Nanoscale Physics · Physics 2018-03-30 Xiaoyu Wu , Urko Petralanda , Lu Zheng , Yuan Ren , Rongwei Hu , Sang-Wook Cheong , Sergey Artyukhin , Keji Lai

Novel ground-state spin structures in undoped and lightly-doped manganites are here investigated based on the orbital-degenerate double-exchange model, by using mean-field and numerical techniques. In undoped manganites, a new…

Strongly Correlated Electrons · Physics 2009-11-07 Takashi Hotta , Mohammad Moraghebi , Adrian Feiguin , Adriana Moreo , Seiji Yunoki , Elbio Dagotto

The Hall resistivity and magnetization have been investigated in the ferromagnetic state of the bilayered manganite La(2-2x)Sr(1+2x)Mn2O7 (x=0.36). The Hall resistivity shows an increase in both the ordinary and anomalous Hall coefficients…

Strongly Correlated Electrons · Physics 2009-11-11 Y. Hirobe , Y. Ashikawa , R. Kawasaki , K. Noda , D. Akahoshi , H. Kuwahara

We investigate magnetic domain walls in a single fcc Mn layer on Re(0001) employing spin-polarized STM, atom manipulation, and spin dynamics simulations. The low symmetry of the row-wise antiferromagnetic (1Q) state leads to a new type of…

Mesoscale and Nanoscale Physics · Physics 2021-06-16 Jonas Spethmann , Martin Grünebohm , Roland Wiesendanger , Kirsten von Bergmann , André Kubetzka

We propose a Hamiltonian dynamics formalism for the current and magnetic field driven dynamics of ferromagnetic and antiferromagnetic domain walls in one dimensional systems. To demonstrate the power of this formalism, we derive Hamilton…

Mesoscale and Nanoscale Physics · Physics 2017-05-12 Davi R. Rodrigues , Karin Everschor-Sitte , Oleg A. Tretiakov , Jairo Sinova , Ar. Abanov

We observe strongly nonlinear spin dynamics in ferro-/antiferro-magnetic multilayers, controlled by the number of bilayers in the system, layer thicknesses, as well as temperature, peaking in magnitude near the N\'eel point of the…

Mesoscale and Nanoscale Physics · Physics 2025-06-23 O. Busel , D. Polishchuk , A. Kravets , V. Korenivski

The antiferromagnetic to ferromagnetic phase transition in B2-ordered FeRh is imaged in laterally confined nanopatterned islands using photoemission electron microscopy with x-ray magnetic circular dichroism contrast. The resulting magnetic…

We determine magnon spectra of an atomic bilayer magnet with ferromagnetic intra- and both ferro- and anti- ferromagnetic interlayer coupling. Analytic expressions for the full magnon band of the latter case reveal that both exchange…

Materials Science · Physics 2021-05-07 Lara C. Ortmanns , Gerrit E. W. Bauer , Yaroslav M. Blanter

Domain walls in antiferromagnets under a spin-polarized current present dynamical behavior that is not observed in ferromagnets, and it is tunable by the current polarization. Precessional dynamics is obtained for perpendicular spin…

Materials Science · Physics 2026-02-02 George Theodorou , Stavros Komineas

We theoretically propose a generation of an antiferro skyrmion crystal (AF-SkX) in a synthetic bilayer antiferromagnetic system under an external magnetic field. By performing the simulated annealing for a spin model on a centrosymmetric…

Strongly Correlated Electrons · Physics 2023-07-20 Satoru Hayami

We predict that antiferromagnetic bilayers formed from van der Waals (vdW) materials, like bilayer CrI$_3$, have a strong magnetoelectric response that can be detected by measuring the gate voltage dependence of Faraday or Kerr rotation…

Mesoscale and Nanoscale Physics · Physics 2021-03-15 Chao Lei , Bheema Lingam Chittari , Kentaro Nomura , Nepal Banerjee , Jeil Jung , Allan H. MacDonald

The antiferromagnetic structure of Sr3Ir2O7, the bilayer analogue of a spin-orbital Mott insulator Sr2IrO4, was revealed by resonant magnetic x-ray diffraction. Contrasting intensities of the magnetic diffraction at the Ir LIII and LII…

Strongly Correlated Electrons · Physics 2015-06-05 Shigeki Fujiyama , K. Ohashi , H. Ohsumi , K. Sugimoto , T. Takayama , T. Komesu , M. Takata , T. Arima , H. Takagi

Unidirectional spin Hall magnetoresistance (USMR) has been widely reported in the heavy metal / ferromagnet (HM/FM) bilayer systems. We observe the USMR in the Pt/{\alpha}-Fe2O3 bilayers where the {\alpha}-Fe2O3 is an antiferromagnetic…

Mesoscale and Nanoscale Physics · Physics 2023-03-08 Yang Cheng , Junyu Tang , Justin J. Michel , Su Kong Chong , Fengyuan Yang , Ran Cheng , Kang L. Wang

By applying density functional theory calculations, we predict that the groundstate of bilayer silicene at certain interlayer distances can be antiferromagnetic. At small electron or hole doping, it becomes half metallic under applied…

Materials Science · Physics 2018-09-03 Xiao-Fang Ouyang , Ze-Yi Song , Yu-Zhong Zhang

We report on an investigation of the double-layer manganite series (La(1-z)Pr(z))1.2Sr1.8Mn2O7 (0 <= z <= 1), carried out on single crystals by means of both macroscopic magnetometry and local probes of magnetism (muSR, 55Mn NMR). Muons and…

Strongly Correlated Electrons · Physics 2009-11-13 G. Allodi , M. Bimbi , R. De Renzi , C. Baumann , M. Apostu , R. Suryanarayanan , A. Revcolevschi

We study the structure of domain walls in multiferroic magnets with the conical spiral ordering. We formulate a simple spin model which has a conical spiral ground state in absence of magnetic anisotropies. We find a transition from the…

Strongly Correlated Electrons · Physics 2009-06-30 Andrea Scaramucci , Thomas A. Kaplan , Maxim Mostovoy

The analytical theory for a ferromagnetic antiferromagnetic bilayer with a compensated interface has been developed using an explicit expression for the interfacial interaction energy density. A stability of a solution describing domain…

Materials Science · Physics 2007-05-23 N. A. Usov , Ching-Ray Chang , Zung-Hang Wei