Magnetic excitations in an<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>S</mml:mi><mml:mo>=</mml:mo><mml:mfrac><mml:mn>1</mml:mn><mml:mn>2</mml:mn></mml:mfrac></mml:mrow></mml:math>diamond-shaped tetramer compound<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Cu</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>PO</mml:mi><mml:mn>4</mml:mn></mml:msub><mml:mi>OH</mml:mi></mml:mrow></mml:math>

Matsuda, M.; Dissanayake, Sachith; Abernathy, D. L.; Totsuka, Keisuke; Belik, Alexei А.

doi:10.1103/physrevb.92.184428

Cited by 5 publications

(5 citation statements)

References 14 publications

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“…This gives the natural explanation of the spin gap as the separation between the spin-singlet ground state and the excited triplet state of the cluster. This scenario has been verified more recently by 31 P NMR [699] and powder neutron spectroscopy measurements [700]. The temperature-dependent shift of the NMR line points towards low-dimensional magnetism and can be perfectly described by the isolated spintetramer model.…”

Section: Olivenite and Libethenite: A Weakly Interacting Network Of A...mentioning

confidence: 62%

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Quantum magnetism in minerals

Inosov

2018

Advances in Physics

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The discovery of magnetism by the ancient Greeks was enabled by the natural occurrence of lodestone -a magnetized version of the mineral magnetite. Nowadays, natural minerals continue to inspire the search for novel magnetic materials with quantum-critical behaviour or exotic ground states such as spin liquids. The recent surge of interest in magnetic frustration and quantum magnetism was largely encouraged by crystalline structures of natural minerals realizing pyrochlore, kagome, or triangular arrangements of magnetic ions. As a result, names like azurite, jarosite, volborthite, and others, which were barely known beyond the mineralogical community a few decades ago, found their way into cutting-edge research in solid-state physics. In some cases, the structures of natural minerals are too complex to be synthesized artificially in a chemistry lab, especially in single-crystalline form, and there is a growing number of examples demonstrating the potential of natural specimens for experimental investigations in the field of quantum magnetism. On many other occasions, minerals may guide chemists in the synthesis of novel compounds with unusual magnetic properties. The present review attempts to embrace this quickly emerging interdisciplinary field that bridges mineralogy with low-temperature condensed-matter physics and quantum chemistry. PACS: 75.30.-m -intrinsic properties of magnetically ordered materials; 75.10.Jm -models of magnetic ordering, including quantum spin frustration; 91.60.Pn -magnetic properties of minerals.

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Section: Olivenite and Libethenite: A Weakly Interacting Network Of A...mentioning

confidence: 62%

“…It corresponds to the transition from the ground state to the second excited triplet state. The observed ratio E 2 /E 1 ≈ 5/3 could be explained by including diagonal couplings of the order of 4 meV within the tetramer [700].…”

Section: Olivenite and Libethenite: A Weakly Interacting Network Of A...mentioning

confidence: 89%

Quantum magnetism in minerals

Inosov

2018

Advances in Physics

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“…19−22 There are two representative types of diamond chains: one is composed of a dimer connected via a monomer, 19 and the other is formed by tetramers. 22 Most of the diamond chains are curtained off by nonmagnetic ions, forming a quasi-1D structure. 17 Therefore, to synthesize Cubased compounds containing diamond chains, the choice of nonmagnetic ions or ligands is crucial.…”

Section: ■ Introductionmentioning

confidence: 99%

“…A diamond chain is the simplest 1D spin frustrated system with exotic magnetic properties: for example, a quantum magnetization plateau. , Through the great efforts of chemists and physicists, several diamond-chain compounds have been synthesized. − There are two representative types of diamond chains: one is composed of a dimer connected via a monomer, and the other is formed by tetramers . Most of the diamond chains are curtained off by nonmagnetic ions, forming a quasi-1D structure .…”

Section: Introductionmentioning

confidence: 99%

Structure and 3/7-like Magnetization Plateau of Layered Y₂Cu₇(TeO₃)₆Cl₆(OH)₂ Containing Diamond Chains and Trimers

et al. 2019

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We have synthesized a new spin-1/2 antiferromagnet, Y2Cu7(TeO3)6Cl6(OH)2, via a traditional hydrothermal method. This compound crystallizes in the triclinic crystal system with space group P1̅. The magnetic ions constitute a two-dimensional layered lattice with a novel topological structure in which the Cu4 clusters make up distorted diamond chains along the a axis and these chains are connected by the Cu3 trimers. The magnetic susceptibility and specific heat measurements show that the compound is antiferromagnetically ordered at T N = 4.1 K. This antiferromagnetic ordering is further supported by electron spin resonance (ESR) data. The magnetization curve presents a field-induced metamagnetic transition at 0.2 T, followed by a magnetization plateau within a wide magnetic field range from 7 T to at least 55 T, which corresponds to 3/7 of the saturated magnetization with g = 2.15 obtained from ESR. The possible mechanism for the magnetization plateau is discussed.

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“…A classic example is that of spinon excitations in one-dimensional antiferromagnets [24,25]. More recently a realization of longitudinal spin excitations, the so called Higgs mode, in certain Q1D magnets has been proposed [1,[26][27][28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Cluster mean-field study of the Heisenberg model for CuInVO5

Singhania

Kumar

2018

Phys. Rev. B

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Motivated by the experimental report of unusual low temperature magnetism in quasi onedimensional magnet CuInVO5, we present results of a cluster mean-field study on a spin-1/2 Heisenberg model with alternating ferromagnetic and antiferromagnetic nearest-neighbor coupling. We map out the ground state phase diagrams with varying model parameters, including the effect of an external magnetic field. An unexpected competition between different spin-spin correlations is uncovered. Multiple spin-flop transitions are identified with the help of component resolved correlation functions. For the material-specific choice of model parameters we discuss the temperature dependence of specific heat and magnetic susceptibility, and compare our results with the available experimental data. A detailed account of spin-spin correlations allows us to present a microscopic understanding of the low-temperature magnetic ordering in CuInVO5. Most notably, we identify the origin of an extra peak in the low temperature specific heat data of CuInVO5 reported by Hase et al. [1]. PACS numbers: 75.10.-b, 75.10.Pq, 75.40.Cx 1 2 3 4 J 2 J 2 J 1 J 3 FIG. 1. (Color online) A schematic picture of the coupled tetramer model. Each dot represents a spin-1/2 and the nearest-neighbor couplings are indicated by double (J1), solid (J2) and dotted (J3) lines.

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Magnetic excitations in anS=12diamond-shaped tetramer compoundCu2PO4OH

Cited by 5 publications

References 14 publications

Quantum magnetism in minerals

Quantum magnetism in minerals

Structure and 3/7-like Magnetization Plateau of Layered Y₂Cu₇(TeO₃)₆Cl₆(OH)₂ Containing Diamond Chains and Trimers

Cluster mean-field study of the Heisenberg model for CuInVO5

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Magnetic excitations in anS=12diamond-shaped tetramer compoundCu2PO4OH

Cited by 5 publications

References 14 publications

Quantum magnetism in minerals

Quantum magnetism in minerals

Structure and 3/7-like Magnetization Plateau of Layered Y2Cu7(TeO3)6Cl6(OH)2 Containing Diamond Chains and Trimers

Cluster mean-field study of the Heisenberg model for CuInVO5

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Product

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Structure and 3/7-like Magnetization Plateau of Layered Y₂Cu₇(TeO₃)₆Cl₆(OH)₂ Containing Diamond Chains and Trimers