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相关论文: Hidden magnetic phases in i-MAX compounds

200 篇论文

It is shown that magnetic states and field-driven reorientation transitions in synthetic antiferromagnets crucially depend on contributions of higher-order anisotropies. A phenomenological macrospin model is derived to describe the magnetic…

材料科学 · 物理学 2009-11-11 A. N. Bogdanov , U. K. Roessler

Investigation of the magnetism of Cu$_3$Mo$_2$O$_9$ single crystal, which has antiferromagnetic (AF) linear chains interacting with AF dimers, reveals an AF second-order phase transition at $T_{\rm N} = 7.9$ K. Although weak…

By performing first-principles electronic structure calculations and analyzing effective magnetic model of alkali-doped iron selenides, we show that the materials without iron vacancies should approach a novel checkerboard phase in which…

超导电性 · 物理学 2012-03-28 Wei Li , Shuai Dong , Chen Fang , Jiangping Hu

Strange quark matter could be found in the core of neutron stars or forming strange quark stars. As is well known, these astrophysical objects are endowed with strong magnetic fields which affect the microscopic properties of matter and…

天体物理学 · 物理学 2008-12-18 R. Gonzalez Felipe , A. Perez Martinez , H. Perez Rojas , M. Orsaria

Cubic f-electron compounds commonly exhibit highly anisotropic magnetic phase diagrams consisting of multiple long-range ordered phases. Field-driven metamagnetic transitions between them may depend not only on the magnitude, but also on…

Magnetization of the frustrated $S=1/2$ chain compound LiCuVO$_4$, focusing on high magnetic field phases, is reported. Besides a spin-flop transition and the transition from a planar spiral to a spin modulated structure observed recently,…

强关联电子 · 物理学 2011-03-03 L. E. Svistov , T. Fujita , H. Yamaguchi , S. Kimura , K. Omura , A. Prokofiev , A. I. Smirnov , Z. Honda , M. Hagiwara

Permanent magnets are of great importance due to their vast applications. MnBi has been proposed to be a potential permanent magnet that can be widely used while past efforts have been focused on optimizing the ferromagnetic low-temperature…

材料科学 · 物理学 2023-12-05 Gina Angelo , Jeremy G. Philbrick , Jian Zhang , Tai Kong , Xin Gui

We report the discovery of new superconducting and novel magnetic phases in CeIn$_3$ on the verge of antiferromagnetism (AFM) under pressure ($P$) through the In-nuclear quadrupole resonance (NQR) measurements. We have found a $P$-induced…

In Ca1-xRExFeAs2 (RE= rare earth), an antiferromagnetic (AFM) phase as well as a structural transition has been reported, even in the electron-overdoped regime. Here we investigated the temperature-dependent in-plane optical spectroscopy of…

超导电性 · 物理学 2016-06-15 Run Yang , Bing Xu , Yaomin Dai , Wei Zhang , Jinyun Liu , Ziyang Qiu , Xianggang Qiu

We have investigated the magnetic-field induced phases of a typical three-dimensional frustrated magnet, CdCr$_2$O$_4$, in magnetic fields of up to 120 T that is generated by the single-turn coil techniques. We focused on magnetic phase…

强关联电子 · 物理学 2013-02-18 Atsuhiko Miyata , Hiroaki Ueda , Shojiro Takeyama

We study URu$_{2-x}$Fe$_x$Si$_2$, in which two types of staggered phases compete at low temperature as the iron concentration $x$ is varied: the nonmagnetic "hidden order" (HO) phase below the critical concentration $x_c$, and…

强关联电子 · 物理学 2016-11-30 H. -H. Kung , S. Ran , N. Kanchanavatee , V. Krapivin , A. Lee , J. A. Mydosh , K. Haule , M. B. Maple , G. Blumberg

We study a stacked triangular lattice Ising model with both intra- and inter-plane antiferromagnetic interactions in a field, by Monte Carlo simulation. We find only one phase transition from a paramagnetic to a partially disordered phase,…

统计力学 · 物理学 2018-05-07 M. Žukovič , M. Borovský , A. Bobák

The fraction of the paramagnetic phase surviving at the impurity-induced antiferromagnetic order transition of the doped spin-Peierls magnet Cu(1-x)Mg(x)GeO3 (x < 5%) is found to increase with an external magnetic field. This effect is…

强关联电子 · 物理学 2009-11-10 V. N. Glazkov , A. I. Smirnov , H. -A. Krug von Nidda , A. Loidl , K. Uchinokura , T. Masuda

For magnets with a fully frustrated inter-layer interaction, we argue that the quantum phase transitions from a paramagnetic to an antiferromagnetic ground state, driven by pressure or magnetic field, are asymptotically three-dimensional,…

强关联电子 · 物理学 2007-11-08 Oliver Rösch , Matthias Vojta

We study an extension of the 2D Fermi--Hubbard model, which was recently introduced in [Das et al., Phys. Rev. Lett. 132, 263402 (2024)] and shown to describe altermagnetism that can be studied in cold atom systems. Using an updated…

量子气体 · 物理学 2025-06-23 E. Langmann , J. Lenells

We present evidence of coexistence of electron paramagnetic resonance signal and anti-ferromagnetic resonance signals above the anti-ferromagnetic (AFM) transition ($T_N$) in $Pr_{0.5}Ca_{0.5}MnO_3$. We identify the latter with AFM rare…

强关联电子 · 物理学 2018-02-21 Vinay Kumar Shukla , Soumik Mukhopadhyay

Quantum fluctuations in the effective spin one-half layered structure triangular-lattice quantum Heisenberg antiferromagnet Ba$_3$CoSb$_2$O$_9$ lift the classical degeneracy of the antiferromagnetic ground state in magnetic field, producing…

强关联电子 · 物理学 2021-06-02 N. A. Fortune , Q. Huang , T. Hong , J. Ma , E. S. Choi , S. T. Hannahs , Z. Y. Zhao , X. F. Sun , Y. Takano , H. D. Zhou

Compositionally complex materials (CCMs) present a potential paradigm shift in the design of magnetic materials. These alloys exhibit long-range structural order coupled with limited or no chemical order. As a result, extreme local…

We study phase domain coarsening in the long time limit after a quench of magnetic field in a quasi one-dimensional spin-1 antiferromagnetic condensate. We observe that the growth of correlation length obeys scaling laws predicted by the…

量子气体 · 物理学 2021-05-20 Joanna Pietraszewicz , Aleksandra Seweryn , Emilia Witkowska

In contrast to magnetic order formed by electrons' dipolar moments, ordering phenomena associated with higher-order multipoles (quadrupoles, octupoles, etc.) are more difficult to characterize because of the limited choice of experimental…