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相关论文: Universal magnetic structure of the half-magnetiza…

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Spinless systems exhibit unique topological characteristics compared to spinful ones, stemming from their distinct algebra. Without chiral interactions typically linked to spin, an intriguing yet unexplored interplay between topological and…

介观与纳米尺度物理 · 物理学 2025-01-03 Cong Chen , Xu-Tao Zeng , Wang Yao

In zero magnetic field the superconductor Sr$_2$RuO$_4$ is believed to have a chiral spin triplet pairing state in which the gap function d-vector is aligned along the crystal c-axis. Using a phenomenological but orbital specific…

超导电性 · 物理学 2009-11-13 James F. Annett , B. L. Györffy , G. Litak , K. I. Wysokiński

We investigate the $S=2$ antiferromagnetic quantum spin chain with the exchange and single-ion anisotropies in a magnetic field, using the numerical exact diagonalization of finite-size clusters and the level spectroscopy analysis. It is…

强关联电子 · 物理学 2019-08-09 Tôru Sakai , Kiyomi Okamoto , Takashi Tonegawa

The magnetic interactions in one-dimensional, two-dimensional (2D) and ladder cuprates are evaluated systematically by using small Cu-O clusters. We find that the superexchange interaction J between nearest neighbor Cu spins strongly…

强关联电子 · 物理学 2015-06-25 Yoshiaki Mizuno , Takami Tohyama , Sadamichi Maekawa

We study the ground state phase diagram of a frustrated spin-1/2 four-leg spin tube in an external magnetic field. We explore the parameter space of this model in the regime of all-antiferromagnetic exchange couplings by means of three…

强关联电子 · 物理学 2015-06-23 F. A. Gómez Albarracín , M. Arlego , H. D. Rosales

We determined the crystal structure of Cs$_2$LiRuCl$_6$, which was synthesized first in this work, and investigated its magnetic properties. Cs$_2$LiRuCl$_6$ has a hexagonal structure composed of linear chains of face-sharing RuCl$_6$ and…

We obtain a classical spin liquid (CSL) phase by applying a magnetic field in $J_1$-$J_2$-$J_3$ Ising model on a kagome lattice. As we proved in the previous study [Phys. Rev. Lett. {\bf 119}, 077207 (2017)], this model realizes one species…

强关联电子 · 物理学 2020-04-28 Kunio Tokushuku , Tomonari Mizoguchi , Masafumi Udagawa

A combination of small-cluster exact-diagonalization calculations and a well-controlled approximative method is used to examine the ground-state phase diagrams of the spin-one-half Falicov-Kimball model extended by the spin-dependent…

强关联电子 · 物理学 2015-06-25 Martin Zonda

Correlated materials with competing spin-orbit and crystal-field interactions can host composite spin-orbital magnons that are highly susceptible to structural and electronic perturbations, enabling the control of magnetic dynamics beyond…

The structural and magnetic properties of spinel compounds $CoB_2O_4$ (B=Cr,Mn and Fe) are studied using the DFT+U method and generalized gradient approximation (GGA). We concentrate on understanding the trends in the properties of these…

强关联电子 · 物理学 2016-09-21 Debashish Das , Rajkumar Biswas , Subhradip Ghosh

A detailed theoretical study on the electronic structure and magnetic properties of half-metallic ferromagnet CrO$_2$ was carried out by means of relativistic full-potential linear muffin-tin orbital method within the generalized gradient…

材料科学 · 物理学 2009-11-11 V. Kanchana , G. Vaitheeswaran , M. Alouani

We investigated the classical Shastry-Sutherland lattice under an external magnetic field in order to understand the recently discovered magnetization plateaux in the rare-earth tetraborides compounds RB$_4$. A detailed study of the role of…

强关联电子 · 物理学 2009-03-12 M. Moliner , D. C. Cabra , A. Honecker , P. Pujol , F. Stauffer

We report the observation of magnetic superstructure in a magnetization plateau state of SrCu2(BO3)2, a frustrated quasi-two-dimensional quantum spin system. The Cu and B nuclear magnetic resonance (NMR) spectra at 35 mllikelvin indicate an…

强关联电子 · 物理学 2009-11-07 K. Kodama , M. Takigawa , M. Horvatic , C. Berthier , H. Kageyama , Y. Ueda , S. Miyahara , F. Becca , F. Mila

We study the one-dimensional spin-1/2 model with nearest and next-to-nearest-neighbor couplings exposed to a homogeneous magnetic field $h_{3}$ and a dimer field with period $q$ and strength $\delta$. The latter generates a magnetization…

强关联电子 · 物理学 2016-08-15 A. Fledderjohann , C. Gerhardt , M. Karbach , K. -H. Mütter , R. Wießner

We have studied the magnetization depth profiles in a [57Fe(dFe)/Cr(dCr)]x30 multilayer with ultrathin Fe layers and nominal thickness of the chromium spacers dCr 2.0 nm using nuclear resonance scattering of synchrotron radiation. The…

Below its N\'eel temperature, the frustrated magnet CdCr$_2$O$_4$ exhibits an antiferromagnetic spin-spiral ground state. Such states can give rise to a sizable magnetoelectric coupling. In this report, we measure the electric polarization…

材料科学 · 物理学 2020-07-15 L. Rossi , D. Brüning , H. Ueda , Y. Skourski , T. Lorenz , B. Bryant

Using the density matrix renormalization group technique we investigate the low-energy properties and the magnetization plateau behavior in a 2-leg mixed spin ladder consisting of a spin-1/2 chain coupled with a spin-1 chain. The calculated…

强关联电子 · 物理学 2009-11-07 Jizhong Lou , Changfeng Chen , Shaojin Qin

CsCuCl_3 is a ferromagnetically stacked triangular spin-1/2 antiferromagnet. We discuss models for its zero-temperature magnetization process. The models range from three antiferromagnetically coupled ferromagnetic chains to the full…

强关联电子 · 物理学 2015-02-03 A. Honecker , M. Kaulke , K. D. Schotte

We have studied the spin anisotropy in spin-singlet ground state compounds and the magnetic chirality, as measured by inelastic polarized neutron scattering techniques, in the chain-sublattice of Sr14Cu24O41. In-plane and out of plane…

材料科学 · 物理学 2007-05-23 J. E. Lorenzo , C. Boullier , L. P. Regnault , U. Ammerahl , A. Revcolevschi

In this letter we describe the ground-state magnetic structure of the highly anisotropic helimagnet Cr$_{1/3}$NbS$_2$ in a magnetic field. A Heisenberg spin model with Dyzaloshinkii-Moriya interactions and magne- tocrystalline anisotropy…