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Ferromagnetic side layers sandwiching a nonmagnetic spacer as a metallic trilayer has become a pivotal platform for achieving spintronic devices. Recent experiments demonstrate that manipulating the width or the nature of conducting spacer…

材料科学 · 物理学 2024-09-09 Guan-Wei Peng , Hung-Chin Wang , Yu-Jie Zhong , Chao-Cheng Kaun , Ching-Hao Chang

We study the magnetic interactions in atomic layers of Fe and 5d transition-metals such as Os, Ir, and Pt on the (001) surface of Rh using first-principles calculations based on density functional theory. For both stackings of the 5d-Fe…

材料科学 · 物理学 2017-10-11 Sebastian Meyer , Bertrand Dupé , Paolo Ferriani , Stefan Heinze

Our proposed spin valve prototype showcases a sophisticated design featuring a two-dimensional graphene bilayer positioned between layers of ${CrBr}_3$ ferromagnetic insulators. In this model, proximity coupling plays a pivotal role,…

介观与纳米尺度物理 · 物理学 2025-11-12 S. K. Behera , P. C. Ramamurthy

Altermagnetism, as a new branch of magnetism independent of traditional ferromagnetism and antiferromagnetism, has attracted extensive attention recently. At present, researchers have proved several kinds of three-dimensional altermagnets,…

材料科学 · 物理学 2024-12-13 Wencong Sun , Haoshen Ye , Li Liang , Ning Ding , Shuai Dong , Shan-shan Wang

The enhancement of Neel temperature ($T_N$) of low-$T_{N}$ antiferromagnets in antiferromagnetic bilayers AF1/AF2, where the $T_N$ of AF1 is larger than AF2 (for example enhancement of $T_{N}$ of CoO in CoO/NiO or FeO in FeO/CoO), is a…

强关联电子 · 物理学 2024-12-20 Sandip Halder , Sudip Mandal , Kalpataru Pradhan

Twist between neighboring layers and variation of interlayer distance are two extra ways to control the physical properties of stacked two-dimensional van der Waals materials without alteration of chemical compositions or application of…

材料科学 · 物理学 2024-04-19 Li-Ya Qiao , Xiu-Cai Jiang , Ze Ruan , Yu-Zhong Zhang

The atomic thickness of two-dimensional (2D) materials provides a unique opportunity to control material properties and engineer new functionalities by electrostatic doping. Electrostatic doping has been demonstrated to tune the electrical…

材料科学 · 物理学 2018-08-01 Shengwei Jiang , Lizhong Li , Zefang Wang , Kin Fai Mak , Jie Shan

We investigate the interlayer coupling between two thin ferromagnetic (F) films mediated by an antiferromagnetic (AF) spacer in F*/AF/F trilayers and show how it transitions between different regimes on changing the AF thickness. Employing…

Intrinsic structural phase is a crucial foundation for the fundamental physical properties, and for creating innovative devices with unprecedented performances and unique functionalities. Long-range ferromagnetic orders of van der Waals…

Magnetic insulators are a key resource for next-generation spintronic and topological devices. The family of layered metal halides promises ultrathin insulating multiferroics, spin liquids, and ferromagnets, but new characterization methods…

We analyze magnetic properties of monolayers and bilayers of chromium trihalides, CrI$_3$, in two different stacking configurations: AA and rhombohedral ones. Our main focus is on the corresponding Curie temperatures, hysteresis curves,…

介观与纳米尺度物理 · 物理学 2024-04-25 S. Stagraczynski , P. Balaz , M. Jafari , J. Barnas , A. Dyrdal

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 systems are. Here we present a fully relativistic…

材料科学 · 物理学 2022-04-06 Banasree Sadhukhan , Anders Bergman , Yaroslav O. Kvashnin , Johan Hellsvik , Anna Delin

We present a systematic study of higher-order exchange interactions beyond the pair-wise Heisenberg exchange in transition-metal trilayers based on density functional theory calculations. We show that these terms can play an important role…

材料科学 · 物理学 2021-07-21 Mara Gutzeit , Soumyajyoti Haldar , Sebastian Meyer , Stefan Heinze

Understanding the dynamics of interacting quantum spins has been one of the active areas of condensed matter physics research. Recently, extensive inelastic neutron scattering measurements have been carried out in an interesting class of…

强关联电子 · 物理学 2018-08-27 Kingshuk Majumdar , S. D. Mahanti

Nanomagnetism concerns the engineering of magnetic interactions in heterostructures that consist of layers of magnetic and non-magnetic materials. Mostly, these interactions are dominated by the minimization of energy. Here, we propose an…

介观与纳米尺度物理 · 物理学 2025-05-21 William Huddie , Laura Filion , Marjolein Dijkstra , Rembert Duine

We have investigated interlayer interactions in the bilayer PtTe$_{2}$ system, which influence the electronic energy bands near the Fermi levels. Our diffusion Monte Carlo (DMC) calculations for the high-symmetry bilayer stackings (AA, AB,…

材料科学 · 物理学 2024-04-22 Jeonghwan Ahn , Seoung-Hun Kang , Mina Yoon , Jaron T. Krogel

The depth profile of the intrinsic magnetic properties in an Fe/Sm-Co bilayer fabricated under nearly optimal spring-magnet conditions was determined by complementary studies of polarized neutron reflectometry and micromagnetic simulations.…

材料科学 · 物理学 2014-11-21 Yaohua Liu , S. G. E. te Velthuis , J. S. Jiang , Y. Choi , S. D. Bader , A. A. Parizzi , H. Ambaye , V. Lauter

Recently, three different magnetic states were observed experimentally in trilayer CrI3 under pressure,including ferromagnetic (FM)-upupup, FM-downupdown and FM-upupdown. To reveal the nature of the observed three magnetic states, we…

材料科学 · 物理学 2021-12-08 Zhen Zhang , Jing-Yang You , Bo Gu , Gang Su

The magnetic interfacial Dzyaloshinskii-Moriya interaction (DMI) in multi-layered thin films can lead to exotic chiral spin states, of paramount importance for future spintronic technologies. Interfacial DMI is normally manifested as an…

介观与纳米尺度物理 · 物理学 2019-06-06 Amalio Fernández-Pacheco , Elena Vedmedenko , Fanny Ummelen , Rhodri Mansell , Dorothée Petit , Russell P. Cowburn

The family of moir\'e materials provides a powerful platform for tuning interlayer couplings via the twist angle in systems with large spatial periodicity. In trilayer graphene systems, interlayer couplings at the two interfaces can…

介观与纳米尺度物理 · 物理学 2025-04-09 Wei-En Tseng , Mei-Yin Chou