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Magnetism, when combined with an unconventional electronic band structure, can give rise to forefront electronic properties such as the quantum anomalous Hall effect, axion electrodynamics, and Majorana fermions. Here we report the…

CuCrS2 is a triangular lattice Heisenberg antiferromagnet with a rhombohedral crystal structure. We report on neutron and synchrotron powder diffraction results which reveal a monoclinic lattice distortion at the magnetic transition and…

For several decades the low carrier density local moment magnet EuB$_6$ has been considered a candidate material for ferromagnetic polarons. There is however no consistent explanation for the host of intriguing observations that have…

强关联电子 · 物理学 2024-08-08 Tanmoy Mondal , Pinaki Majumdar

The spin-fermion model was previously successful to describe the complex phase diagrams of colossal magnetoresistive manganites and iron-based superconductors. In recent years, two-dimensional magnets have rapidly raised up as a new…

强关联电子 · 物理学 2023-08-22 Kaidi Xu , Di Hu , Jun Chen , Haoshen Ye , Lin Han , Shan-Shan Wang , Shuai Dong

We theoretically demonstrate that sufficiently strong magnetoelastic coupling can change the ground state of otherwise uniform spin systems to chiral spin configurations. More specifically, we show that, a periodic array of chiral spin…

介观与纳米尺度物理 · 物理学 2025-09-22 Gyungchoon Go , Se Kwon Kim

The combination of magnetic symmetries and electronic band topology provides a promising route for realizing topologically nontrivial quasiparticles, and the manipulation of magnetic structures may enable the switching between topological…

Magnetic properties of a mixed spin-1/2 and spin-3/2 Ising model on honeycomb lattice are investigated within the framework of an exact star-triangle mapping transformation. The particular attention is focused on the effect of uniaxial and…

统计力学 · 物理学 2007-05-23 Michal Jascur , Jozef Strecka

Muon spin rotation measurements have been performed on a powder sample of a-RuCl3, a layered material which previously has been proposed to be a quantum magnet on a honeycomb lattice close to a quantum spin liquid ground state. Our data…

强关联电子 · 物理学 2016-07-20 F. Lang , P. J. Baker , A. A. Haghighirad , Y. Li , D. Prabhakaran , R. Valenti , S. J. Blundell

Electronic correlations in two-dimensional materials play a crucial role in stabilising emergent phases of matter. The realisation of correlation-driven phenomena in graphene has remained a longstanding goal, primarily due to the absence of…

介观与纳米尺度物理 · 物理学 2023-09-19 Saisab Bhowmik , Arindam Ghosh , U. Chandni

Different instabilities have been speculated for a three-dimensional electron gas confined to its lowest Landau level. The phase transition induced in graphite by a strong magnetic field, and believed to be a Charge Density Wave (CDW), is…

强关联电子 · 物理学 2015-06-15 Benoît Fauqué , David LeBoeuf , Baptiste Vignolle , Marc Nardone , Cyril Proust , Kamran Behnia

Two-dimensional high-spin bipartite honeycomb networks, where anisotropy, competing exchange interactions, and spin fluctuations interplay, provide an alternative platform to test theoretical models that distinguish between classical and…

强关联电子 · 物理学 2026-05-05 M. Barik , Q. Faure , F. Damay , J. P. Embs , S. Petit , P. Khuntia

Ca3Ru2O7 is a correlated and spin-orbit-coupled system with an extraordinary anisotropy. It is both interesting and unique largely because this material exhibits conflicting phenomena that are often utterly inconsistent with traditional…

强关联电子 · 物理学 2021-10-04 Hengdi Zhao , Hao Zheng , Jasminka Terzic , Wenhai Song , Yifei Ni , Yu Zhang , Pedro Schlottmann , Gang Cao

Carrying a large, pure spin magnetic moment of 7 $\mu$bohr/atom in the half-filled 4f shell, divalent europium is an outstanding element for assembling novel magnetic devices in which a two-dimensional electron gas (2DEG) is polarized due…

Twisted graphene bilayers develop highly localised states around AA-stacked regions for small twist angles. We show that interaction effects may induce either an antiferromagnetic (AF) and a ferromagnetic (F) polarization of said regions,…

介观与纳米尺度物理 · 物理学 2017-09-13 Luis A. Gonzalez-Arraga , J. L. Lado , Francisco Guinea , Pablo San-Jose

We report on the study of itinerant magnetism of lattice-trapped magnetic atoms, driven by magnetic dipole-dipole interactions, in the low-entropy and close-to-unit filling regime. We have used advanced dynamical decoupling techniques to…

量子气体 · 物理学 2025-01-22 Thomas Lauprêtre , Ana Maria Rey , Laurent Vernac , Bruno Laburthe-Tolra

The electronic and magnetic properties of the graphene/Eu/Ni(111) intercalation-like system are studied in the framework of the GGA+U approach with dispersive interactions taken into account. Intercalation of monoatomic Eu layer underneath…

材料科学 · 物理学 2014-07-17 E. N. Voloshina , Yu. S. Dedkov

Frustration in magnetic materials arising from competing exchange interactions can prevent the system from adopting long-range magnetic order and can instead lead to a diverse range of novel quantum and topological states with exotic…

Multi-layered materials provide fascinating platforms to realize various functional properties, possibly leading to future electronic devices controlled by external fields. In particular, layered magnets coupled with conducting layers have…

Colossal magnetoresistance (CMR) emerges from intertwined spin and charge degrees of freedom in the form of ferromagnetic clusters also known as trapped magnetic polarons. As a result, CMR is rarely observed in antiferromagnetic materials.…

强关联电子 · 物理学 2022-01-25 J. C. Souza , S. M. Thomas , E. D. Bauer , J. D. Thompson , F. Ronning , P. G. Pagliuso , P. F. S. Rosa

Ferroic orders describe spontaneous polarization of spin, charge, and lattice degrees of freedom in materials. Materials featuring multiple ferroic orders, known as multiferroics, play important roles in multi-functional electrical and…

介观与纳米尺度物理 · 物理学 2023-12-19 Tonghang Han , Zhengguang Lu , Giovanni Scuri , Jiho Sung , Jue Wang , Tianyi Han , Kenji Watanabe , Takashi Taniguchi , Liang Fu , Hongkun Park , Long Ju