Spin Gap And Susceptibility Of Spherical Kagome Cluster Mo72V30

Gapless spin liquid behavior in a kagome Heisenberg.
Reprint of Gapless quantum spin liquid of the kagome.
(PDF) Spin cluster operator theory for the kagome lattice.
Singlet Ground State and Spin Gap in S = 1/2 Kagomé.
Canonical-Ensemble Calculations of the Magnetic Susceptibility for a.
Dimer-dimer Correlations and Magnetothermodynamics of S=1/2.
Theoretical study of spherical kagomé clusters in Mo 72 V 30 and.
Numerical-diagonalization study of spin gap issue of the.
(PDF) Vanishing spin gap in a competing spin... - A.
Ground-state energy and spin gap of spin- 1 Kagome-Heisenberg.
Singlet ground state and spin gap in S = 1/2 Kagomé antiferromagnet.
Phys. Rev. B 79, 174407 (2009) - Magnetic susceptibilities in.
Theoretical study of spherical kagomé clusters in Mo 72V30 and.

Gapless spin liquid behavior in a kagome Heisenberg.

Spin-1/2 spherical kagomé clusters, or quantum-spin icosidodecahedrons, occurring in Mo 72 V 30 and W 72 V 30 are analyzed using the Lanczos method. Magnetic susceptibility analysis reveals that, whereas Mo 72 V 30 contains some degree of structural distortion that decreases its spin gap, the structure of W 72 V 30 can be described as a regular (non-distorted).

Reprint of Gapless quantum spin liquid of the kagome.

Jan 18, 2022 · Local susceptibility at each kagome site (see Ref. for the definition) and correlation functions calculated for the 27-site samples of model No. 2 with bond randomness (a) and the ideal KHA model No. 1 (b), at T = 0.1 J 1 and μ 0 H = 0 T. The dashed lines display the cluster with PBCs. Reuse & Permissions. The high-temperature susceptibility was reproduced by the I h model with J = 245 K, but the low-temperature part was ∗ not.33) As the temperature decreases, the calculated suscep-tibility of the I h model vanishes much faster than the experi-mental susceptibility. In particular, the experimental spin gap.

(PDF) Spin cluster operator theory for the kagome lattice.

It had been believed that Mo 72 V 30 could be described by the I h model, and a quantum Monte Carlo calculation of the magnetic susceptibility was performed in order to extract the exchange. For the ideal quantum spin icosidodecahedron with next-nearest neighbor interactions, we find that there exist many singlet states before the first triplet state, which is an evidence of the resonating valence bond (RVB) state, and the experimental susceptibilities of Mo72V30 measured by Muller et al. and Botar et al. cannot be reproduced. We study the consequences of in-plane (D_p) and out-of-plane (D_z) Dzyaloshinsky-Moriya (DM) interactions on the thermodynamic properties of spin-1/2} Heisenberg model on the kagome lattice using numerical linked cluster expansions and exact diagonalization, and contrast them with those of other perturbations such as exchange anisotropy and dilution. We find that different combinations of the.

Singlet Ground State and Spin Gap in S = 1/2 Kagomé.

Spin-1/2 spherical kagomé clusters, or quantum-spin icosidodecahedrons, occurring in Mo_{72}V_{30} and W_{72}V_{30} are analyzed using the Lanczos method. Magnetic susceptibility analysis reveals that, whereas Mo_{72}V_{30} contains some degree of structural distortion that decreases its spin gap, the structure of W_{72}V_{30} can be described as a.

Canonical-Ensemble Calculations of the Magnetic Susceptibility for a.

May 06, 2009 · Its magnetic ground state was found to be a spin singlet with a triplet gap. Using exact diagonalization for a 12-site kagome cluster, we analyzed the magnetic susceptibility and evaluated individual exchange interactions. The causes leading to the different ground states in Cs 2 Cu 3 SnF 12 and Rb 2 Cu 3 SnF 12 are discussed. Vanishing spin gap in a competing spin-liquid phase in the kagome Heisenberg antiferromagnet. ×. Mar 03, 2008 · From magnetic susceptibility and high-field magnetization measurements, it was found that the ground state is a disordered singlet with the spin gap, as predicted from a recent theory. Exact diagonalization for a 12-site Kagome cluster was performed to analyze the magnetic susceptibility, and individual exchange interactions were evaluated.

Dimer-dimer Correlations and Magnetothermodynamics of S=1/2.

Spin cluster operator theory for the kagome lattice antiferromagnet. Physical Review B, 2011. Kyusung Hwang. Download Download PDF. Full PDF Package Download Full PDF. Canonical-Ensemble Calculations of the Magnetic Susceptibility for a Spin-1/2 Spherical Kagome Cluster With Dzyaloshinskii-Moriya Interactions by Using Microcanonical Thermal Pure Quantum States. Apr 10, 2008 · From magnetic susceptibility and high-field magnetization measurements, it was found that the ground state is a disordered singlet with the spin gap, as predicted from a recent theory. Exact diagonalization for a 12-site Kagomé cluster was performed to analyze the magnetic susceptibility, and individual exchange interactions were evaluated.

Theoretical study of spherical kagomé clusters in Mo 72 V 30 and.

Abstract. Spin-1/2 spherical kagomé clusters, or quantum-spin icosidodecahedrons, occurring in Mo$_{72}$V$_{30}$ and W$_{72}$V$_{30}$ are analyzed using the Lan. Mar 30, 2014 · Download Citation | Theoretical study of spherical kagom, clusters in Mo-72 V-30 and W-72 V-30 | Spin-1/2 spherical kagomé clusters, or quantum-spin. View 0 peer reviews of Evidence of low-energy singlet excited states in the spin-1/2 polyhedral clusters {Mo72V30} and {W72V30} with strongly frustrated kagome networks on Publons Big news! Your Publons™ profile is moving to the Web of Science™.

Numerical-diagonalization study of spin gap issue of the.

On the other hand, magnetization lower than the spin-gap field depends on θ, which is natural because the DM interaction determines the value of zero-temperature susceptibility. Comparing $\theta= 0.5\pi$ and $1.5\pi$, the latter has a weaker cusp around the spin-gap field and seems to reproduce the experimental result better. From magnetic susceptibility and high-field magnetization measurements, it was found that the ground state is a disordered singlet with the spin gap, as predicted from a recent theory. Exact diagonalization for a 12-site Kagomé cluster was performed to analyze the magnetic susceptibility, and individual exchange interactions were evaluated. DOI: 10.1093/PTEP/PTU036 Corpus ID: 124590041. Theoretical study of spherical kagomé clusters in Mo72 V30 and W72 V30 @article{Kunisada2014TheoreticalSO, title={Theoretical study of spherical kagom{\'e} clusters in Mo72 V30 and W72 V30}, author={N. Kunisada and Y. Fukumoto}, journal={Progress of Theoretical and Experimental Physics}, year={2014},.

(PDF) Vanishing spin gap in a competing spin... - A.

An icon used to represent a menu that can be toggled by interacting with this icon. We present a comprehensive list of ground state energies and spin gaps of finite kagome clusters with up to 42 spins obtained using large-scale exact. Low temperature properties of the organic spin-1 Kagomé antiferromagnet, m-MPYNN·BF4, have been studied by measuring heat capacity and magnetic susceptibility down to 35 mK. The heat capacity maximum due to a magnetic short-range order was observed at 1.4 K, which is about half of the antiferromagnetic interaction 2\\vert J\\vert/ k B=3.1 K in the Kagomé lattice. As.

Ground-state energy and spin gap of spin- 1 Kagome-Heisenberg.

Made available by U.S. Department of Energy Office of Scientific and Technical Information. Now on home page. Magnetization, specific heat, and electron spin resonance (ESR) measurements are carried out to clarify the low-energy excitations for the S = 1/2 polyhedral clusters {Mo72V30} and {W72V30}. The clusters provide unique model systems of a kagome network on a quasisphere.

Singlet ground state and spin gap in S = 1/2 Kagomé antiferromagnet.

Back the wing nut off at the end of the brake if the wheel spins freely. If it does, then turn the wing nut in until you begin to hear/feel it rub as you spin the tire. Then back the wing nut off 1-1/2 or to 2 much you back it off effects the play at the foot lever. Rear wheel does not spin freely when torqued all the way. For the spherical kagome system {W72V30}, which is a magnetic cluster with 30 V4+ ions, recent experimental and theoretical studies on the magnetization process at low temperatures have indicated that Dzyaloshinskii-Moriya interaction is an important ingredient in this material. In this paper, we use microcanonical thermal pure quantum (mTPQ) states to calculate the temperature dependence of.

Phys. Rev. B 79, 174407 (2009) - Magnetic susceptibilities in.

Numerical diagonalization methods are employed to study spin-1/2 spherical kagome clusters realized in W72V30 and Mo72V30, where the former is expected to have the ideal symmetry Ih and the latter is a little distorted. For the ideal model with Ih symmetry we calculate spin correlation functions in the ground state, which.

Theoretical study of spherical kagomé clusters in Mo 72V30 and.

The small spin gap of Mo70V30 can be interpreted to indicate the system in close proximity to the ferrimagnetic phase [13]. In 2009, Todae et al. synthesized W70V30 and measured its magnetic susceptibility [15]. This material was independently synthesized by Li et al., and they also carried out a high-energy Raman scattering experiment [16]. Nov 04, 2017 · The S=1/2 kagome-lattice antiferromagnet is studied using the numerical diagonalization of finite clusters and a finite-size scaling. The susceptibili….