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The $S=1/2$ distorted diamond spin chain with the anisotropic ferromagnetic interaction is investigated using the numerical diagonalization and the level spectroscopy analysis. It is known that the system exhibits a plateau of the…

强关联电子 · 物理学 2022-05-17 Tôru Sakai , Kiyomi Okamoto , Hiroki Nakano , Rito Furuchi

The magnetization process of the $S=1/2$ distorted diamond spin chain with ferromagnetic interactions is investigated using the numerical diagonalization of finite-size clusters. The level spectroscopy analysis applied for the model with…

强关联电子 · 物理学 2025-05-06 Masaru Hashimoto , Koki Doi , Tomoki Houda , Rito Furuchi , Hiroki Nakano , Kiyomi Okamoto , Tôru Sakai

The time and field dependence of the magnetic domain structure at magnetization reversal were investigated by Kerr microscopy in interacting ferromagnetic Co/Pt multilayers with perpendicular anisotropy. Large local inhomogeneous…

材料科学 · 物理学 2018-07-26 S. Wiebel , J. P. Jamet , N. Vernier , A. Mougin , J. Ferre , V. Baltz , B. Rodmacq , B. Dieny

Starting from a D-dimensional XXZ ferromagnetic Heisenberg model in an hypercubic lattice, it is demonstrated that the anisotropy in the exchange coupling constant leads to a D-dependent effective on-site anisotropy interaction often…

材料科学 · 物理学 2009-11-10 A. O. Garcia Rodriguez , A. Villares Ferrer , A. O. Caldeira

The spin configuration in the ferromagnetic part during the magnetization reversal plays a crucial role in the exchange bias effect. Through Monte Carlo simulation, the exchange bias effect in ferromagnetic-antiferromagnetic core-shell…

应用物理 · 物理学 2018-01-29 Rui Wu , Shilei Ding , Youfang Lai , Guang Tian , Jinbo Yang

Ground-state phase diagrams and magnetization curves of a spin-1 Heisenberg diamond cluster with two different coupling constants and uniaxial single-ion anisotropy are investigated in a presence of the external magnetic field with the help…

强关联电子 · 物理学 2021-10-18 Katarina Karlova , Jozef Strecka , Masayuki Hagiwara

The frustrated quantum spin system on the distorted diamond chain lattice is investigated using the numerical diagonalization of finite-size clusters and the level spectroscopy analysis. In the previous work this system was revealed to…

强关联电子 · 物理学 2020-04-22 Yuki Ueno , Tomosuke Zenda , Yuta Tachibana , Kiyomi Okamoto , Tôru Sakai

The magnetization process of the $S=1/2$ anisotropic spin ladder with the ferromagnetic rung interaction is investigated using the numerical diagonalization of finite-size clusters. It is found that the translational symmetry broken…

Using the spin-spiral formulation of the tight-binding linear muffin-tin orbital method, the principal components of the exchange stiffness tensor are calculated for typical hard magnets including tetragonal CoPt-type and hexagonal YCo5…

材料科学 · 物理学 2009-11-10 K. D. Belashchenko

Geometric frustration among competing spin exchanges can give rise to novel quantum phases by enhancing fluctuations that drive magnetic systems beyond the classical regime. We investigate the frustrated array of strongly correlated spin…

Magnetic domain walls play a critical role in the nanoscale evolution of magnetic devices. Despite the early efforts, a complete understanding of the micromagnetic evolution of the width and the type of magnetic domain walls has still…

介观与纳米尺度物理 · 物理学 2026-02-13 Guowen Gong , Changmin Xiong , Lijun Zhu

Using the numerical renormalization group method, we study the splitting of the Kondo resonance by a magnetic field applied in different directions in the Kondo model for anisotropic magnetic impurities. Several types of magnetic anisotropy…

强关联电子 · 物理学 2009-05-13 Rok Zitko , Robert Peters , Thomas Pruschke

The magnetization process of the spin-1 Heisenberg dimer model with axial and rhombic single-ion anisotropy terms is particularly investigated in connection with recent experimental high-field measurements performed on the single-crystal…

材料科学 · 物理学 2009-02-18 J. Strecka , M. Hagiwara , P. Balaz , M. Jascur , Y. Narumi , S. Kimura , J. Kuchar , K. Kindo

Spins in molecular magnets can experience both anisotropic exchange interactions and on-site magnetic anisotropy. In this paper we study the effect of exchange anisotropy on the molecular magnetic anisotropy both with and without on-site…

材料科学 · 物理学 2018-12-12 Sumit Haldar , Rajamani Raghunathan , Jean-Pascal Sutter , S. Ramasesha

We discuss the critical behavior of the spin-(1,1/2) Heisenberg ferrimagnetic chain in a magnetic field, whose magnetization curve exhibits a plateau at a third of the full magnetization. A bond alternation stabilizes the massive state,…

统计力学 · 物理学 2009-10-31 Shoji Yamamoto , Toru Sakai

To search for a conceptual picture describing the magnetization plateau phenomenon, we surveyed the crystal structures and the spin lattices of those magnets exhibiting plateaus in their magnetization vs. magnetic field curves by probing…

材料科学 · 物理学 2024-10-24 Myung-Hwan Whangbo , Hyun-Joo Koo , Reinhard K. Kremer , Alexander N. Vasiliev

We demonstrate that the magnetization in magnetic semiconductors exhibits nutational motion when subjected to an external magnetic field. This behavior originates from the splitting of the conduction-electron band which induces anisotropic,…

材料科学 · 物理学 2025-01-09 H. Kachkachi

We show that the interaction of the magnetic subsystem of a curved magnet with the magnet curvature results in coupling of a topologically nontrivial magnetization pattern and topology of the object. The mechanism of this coupling is…

介观与纳米尺度物理 · 物理学 2015-05-20 Oleksandr V. Pylypovskyi , Volodymyr P. Kravchuk , Denis D. Sheka , Denys Makarov , Oliver G. Schmidt , Yuri Gaididei

We investigate dynamical fluctuations of transferred magnetization in the one-dimensional lattice Landau--Lifshitz magnet with uniaxial anisotropy, representing an emblematic model of interacting spins. We demonstrate that the structure of…

统计力学 · 物理学 2022-03-08 Žiga Krajnik , Enej Ilievski , Tomaž Prosen

A combination of experimental techniques, e.g. vector-MOKE magnetometry, Kerr microscopy and polarized neutron reflectometry, was applied to study the field induced evolution of the magnetization distribution over a periodic pattern of…

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